{
  "spore": "profile",
  "id": "metglas-2826mb",
  "spore_version": "0.2",
  "family": "magnet-and-superconducting-alloys",
  "name": "METGLAS 2826MB (nickel-based magnetic alloy ribbon)",
  "abbreviation": "Fe-Ni-B-Mo",
  "role": "magnetic core, field sensor and shield",
  "category": "metals",
  "type": "magnet-alloys",
  "summary": "METGLAS 2826MB is a nickel-based amorphous metal ribbon from Metglas, Inc. The manufacturer's technical bulletin gives a density of 7.90 g/cm3 and a saturation induction of 0.88 T, and lists field sensors, shielding and high-frequency cores as its applications. Its maximum DC permeability is 800000 when annealed and above 50000 as cast, and the bulletin prints no unit for it.\n",
  "best_for": "Field sensors and magnetic shielding where a high annealed DC permeability (800000 in the bulletin) is the goal",
  "weakest_at": "Thin evidence base: the full property set comes from one manufacturer bulletin dated 2011, the permeability has no unit, and no corrosion test or space data were found",
  "identity": {
    "formula": "Amorphous iron nickel-based ribbon with molybdenum and boron; the SDS prints composition ranges only for a six-alloy family",
    "crystal_system": "amorphous (no crystal lattice)",
    "designations": [
      {
        "system": "Trade name",
        "code": "2826MB",
        "source": "metglas-datasheet",
        "where": "Title block, Magnetic Alloy 2826MB (nickel-based)"
      }
    ],
    "source": "metglas-sds",
    "where": "Section 1, Other means of identification: Amorphous Metal Ribbon; Section 3, composition table"
  },
  "tags": {
    "environments": [],
    "stresses": [],
    "applications": [
      "electronics-and-chips"
    ]
  },
  "properties": [
    {
      "benchmark": "density",
      "label": "Density, as printed in the bulletin",
      "value": 7.9,
      "bound": "exact",
      "unit": "g/cm3",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "7.90",
        "condition": "no test condition printed in the table"
      },
      "method": "Value printed in the manufacturer technical bulletin, Physical Properties table",
      "status": "ground",
      "note": "The product page prints 7.9 for the same property; the bulletin's two-decimal value is used here.",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Density (g/cm3)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "saturation_induction",
      "label": "Saturation induction",
      "value": 0.88,
      "bound": "exact",
      "unit": "T",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "condition": "no test condition printed in the table"
      },
      "method": "Value printed in the manufacturer technical bulletin, Magnetic Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Saturation Induction (T)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "dc_permeability",
      "label": "Maximum DC permeability, annealed",
      "value": 800000,
      "bound": "exact",
      "unit": "-",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "condition": "annealed",
        "printed_as": "800,000",
        "unit_printed": "none"
      },
      "method": "Value printed in the manufacturer technical bulletin; the bulletin prints no unit, so the value is entered as a dimensionless number",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Maximum D.C. Permeability, Annealed",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "dc_permeability",
      "label": "Maximum DC permeability, as cast",
      "value": 50000,
      "bound": "lower",
      "unit": "-",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "condition": "as cast",
        "printed_as": ">50,000",
        "unit_printed": "none"
      },
      "method": "Lower bound printed in the manufacturer technical bulletin; the bulletin prints no unit, so the value is entered as a dimensionless number",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Maximum D.C. Permeability, As Cast",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "saturation_magnetostriction",
      "label": "Saturation magnetostriction",
      "value": 12,
      "bound": "exact",
      "unit": "ppm",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "12"
      },
      "method": "Value printed in the manufacturer technical bulletin, Magnetic Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Saturation Magnetostriction (ppm)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "electrical_resistivity",
      "label": "Electrical resistivity",
      "value": 138,
      "bound": "exact",
      "unit": "µΩ.cm",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "138",
        "temperature": "not printed"
      },
      "method": "Value printed in the manufacturer technical bulletin, Magnetic Properties table",
      "status": "ground",
      "note": "The product page prints the same 138 in µΩ-cm.",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Electrical Resistivity (µΩ.cm)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "curie_temperature",
      "label": "Curie temperature",
      "value": 353,
      "bound": "exact",
      "unit": "°C",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "353"
      },
      "method": "Value printed in the manufacturer technical bulletin, Magnetic Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Magnetic Properties, Curie Temperature (°C)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "elastic_modulus",
      "label": "Elastic modulus",
      "value": 100,
      "value_high": 110,
      "bound": "range",
      "unit": "GPa",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "100-110",
        "form": "ribbon"
      },
      "method": "Range printed in the manufacturer technical bulletin, Physical Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Elastic Modulus (GPa)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "ultimate_tensile_strength",
      "label": "Tensile strength",
      "value": 1,
      "value_high": 2,
      "bound": "range",
      "unit": "GPa",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "1-2",
        "form": "ribbon; heat-treatment state not printed"
      },
      "method": "Range printed in the manufacturer technical bulletin, Physical Properties table (the bulletin spells the label Tensil Strength)",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Tensile Strength (GPa)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "lamination_factor",
      "label": "Lamination factor",
      "value": 75,
      "bound": "lower",
      "unit": "%",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": ">75"
      },
      "method": "Lower bound printed in the manufacturer technical bulletin, Physical Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Lamination Factor (%)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "cte",
      "label": "Thermal expansion coefficient",
      "value": 11.7,
      "bound": "exact",
      "unit": "ppm/°C",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "temperature_range": "not printed"
      },
      "method": "Value printed in the manufacturer technical bulletin, Physical Properties table; the bulletin does not print the temperature range",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Thermal Expansion (ppm/°C)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "crystallization_temperature",
      "label": "Crystallization temperature",
      "value": 410,
      "bound": "exact",
      "unit": "°C",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "410"
      },
      "method": "Value printed in the manufacturer technical bulletin, Physical Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Crystallization Temperature (°C)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "max_service_temp",
      "label": "Continuous service temperature",
      "value": 125,
      "bound": "exact",
      "unit": "°C",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "basis": "continuous service"
      },
      "method": "Value printed in the manufacturer technical bulletin, Physical Properties table",
      "status": "ground",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Continuous Service Temp. (°C)",
      "source_detail": {
        "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
        "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
        "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
        "year": 2011,
        "kind": "datasheet",
        "license": "manufacturer document, linked not reproduced"
      }
    },
    {
      "benchmark": "thickness",
      "label": "Ribbon thickness, as printed on the product page",
      "value": 29,
      "bound": "exact",
      "unit": "microns",
      "scope": "material",
      "conditions": {
        "grade": "METGLAS 2826MB (nickel-based)",
        "printed_as": "29"
      },
      "method": "Value printed on the manufacturer product page, General Properties, Physical list; the bulletin does not print a thickness",
      "status": "ground",
      "source": "metglas-web",
      "where": "2826MB General Properties, Physical, Thickness (microns)",
      "source_detail": {
        "title": "METGLAS Magnetic Materials: 2826MB product section (General Properties and Characteristics)",
        "id": "Metglas product page, undated",
        "url": "https://metglas.com/magnetic-materials/",
        "kind": "web",
        "license": "manufacturer web page, linked not reproduced"
      }
    }
  ],
  "corrosion": [
    {
      "environment": "Moisture and corrosive material (storage and incompatibilities)",
      "headline": "The SDS lists moisture and corrosive material as incompatible with the product",
      "effect": "The combined SDS for 2826MB lists moisture and corrosive material as incompatible, and says to store the product under local regulations. The sheet gives no corrosion rate, test or exposure time for this grade.",
      "rating": "unknown",
      "source": "metglas-sds",
      "where": "Section 10, Incompatible materials; Section 7, Conditions for safe storage"
    },
    {
      "environment": "Stated corrosion resistance (manufacturer benefit)",
      "headline": "The bulletin lists higher corrosion resistance as a benefit of 2826MB",
      "effect": "The bulletin and product page list higher corrosion resistance as a benefit. Neither gives a test method, environment, exposure time or comparison alloy, so the claim cannot be quantified from the sources read.",
      "rating": "unknown",
      "source": "metglas-datasheet",
      "where": "Benefits list, page 1"
    },
    {
      "environment": "Heating (thermal ageing)",
      "headline": "The bulletin prints a crystallization temperature of 410 °C and a continuous service temperature of 125 °C",
      "effect": "The bulletin gives a crystallization temperature of 410 °C and a continuous service temperature of 125 °C. It does not say how properties change after long heating between these limits.",
      "rating": "unknown",
      "source": "metglas-datasheet",
      "where": "Physical Properties, Crystallization Temperature and Continuous Service Temp."
    }
  ],
  "risks": {
    "hazards": [
      {
        "text": "The combined SDS classes the product as an article under normal use, with no GHS classification, no signal word and no known significant effects or critical hazards.",
        "ghs": [],
        "source": "metglas-sds",
        "where": "Section 2, OSHA/HCS status, Classification and GHS label elements"
      },
      {
        "text": "The SDS lists nickel as IARC group 1 and as reasonably anticipated to be a human carcinogen (NTP); the SDS gives no nickel amount for 2826MB alone.",
        "ghs": [],
        "source": "metglas-sds",
        "where": "Section 11, Carcinogenicity classification table"
      },
      {
        "text": "The PubChem GHS record for the element nickel lists H317 (may cause an allergic skin reaction), H351 (suspected of causing cancer) and H372 (causes damage to organs through prolonged or repeated exposure). These are hazards of the element, not a measured hazard of this ribbon.",
        "ghs": [
          "H317",
          "H351",
          "H372"
        ],
        "source": "pubchem-nickel",
        "where": "Safety and Hazards, GHS Classification, first hazard list"
      }
    ],
    "failure_risks": [
      {
        "mode": "Loss of the amorphous state on heating",
        "trigger": "Heating toward the crystallization temperature",
        "consequence": "The bulletin prints a crystallization temperature of 410 °C. It does not say which magnetic or mechanical properties change above it.",
        "severity": "moderate",
        "source": "metglas-datasheet",
        "where": "Physical Properties, Crystallization Temperature (°C)"
      },
      {
        "mode": "Permeability depends on the anneal",
        "trigger": "Use in the as-cast state instead of the annealed state",
        "consequence": "The bulletin prints a maximum DC permeability of 800000 when annealed and above 50000 as cast, and says the alloy can be annealed for very high DC permeability.",
        "severity": "moderate",
        "source": "metglas-datasheet",
        "where": "Magnetic Properties, Maximum D.C. Permeability; benefits list, page 1"
      },
      {
        "mode": "Toxic vapour in a fire",
        "trigger": "Fire involving the product",
        "consequence": "The SDS says there is no specific fire or explosion hazard, but decomposition products may include metal oxides and toxic vapour.",
        "severity": "low",
        "source": "metglas-sds",
        "where": "Section 5, Specific hazards and Hazardous thermal decomposition products"
      }
    ],
    "side_effects": [
      {
        "text": "Metal fume fever can follow exposure to high concentrations of fumes from the product.",
        "affects": "People exposed to fumes at high concentration",
        "source": "metglas-sds",
        "where": "Section 11, Other information"
      }
    ],
    "handling": [
      {
        "text": "Take care with items that are sharp or heavy, and wear appropriate personal protective equipment.",
        "source": "metglas-sds",
        "where": "Section 7, Precautions for safe handling; Section 8 referenced"
      },
      {
        "text": "Store the product under local regulations and keep it away from moisture and corrosive material.",
        "source": "metglas-sds",
        "where": "Section 7, Conditions for safe storage; Section 10, Incompatible materials"
      }
    ],
    "mitigations": []
  },
  "uses": [
    {
      "application": "electronics-and-chips",
      "device": "Field sensors",
      "example": "The bulletin lists field sensors as an application of 2826MB.",
      "source": "metglas-datasheet",
      "where": "Applications list, top left"
    },
    {
      "application": "electronics-and-chips",
      "device": "Magnetic shielding",
      "example": "The product page lists shielding applications for 2826MB. The page gives no shield test data for this grade.",
      "source": "metglas-web",
      "where": "2826MB product section, Applications"
    },
    {
      "application": "electronics-and-chips",
      "device": "High-frequency magnetic cores",
      "example": "The bulletin lists high frequency cores as an application of 2826MB.",
      "source": "metglas-datasheet",
      "where": "Applications list"
    },
    {
      "application": "electronics-and-chips",
      "device": "Magnetomechanical sensors",
      "example": "The product page lists magnetomechanical sensors among the applications of 2826MB.",
      "source": "metglas-web",
      "where": "2826MB product section, Applications"
    }
  ],
  "supply": [
    {
      "subject": "Nickel",
      "producers": [
        {
          "country": "Indonesia",
          "share_percent": 66.7,
          "year": 2025
        },
        {
          "country": "Philippines",
          "share_percent": 6.9,
          "year": 2025
        },
        {
          "country": "Russia",
          "share_percent": 5.1,
          "year": 2025
        },
        {
          "country": "Canada",
          "share_percent": 3.6,
          "year": 2025
        }
      ],
      "critical_lists": [],
      "recycling": "USGS: most secondary nickel was in the form of nickel content of stainless-steel scrap, and most recycled nickel was used to make new alloys.",
      "substitutes": [
        "USGS: low-nickel, duplex or ultrahigh-chromium stainless steels have been substituted for austenitic grades in some uses."
      ],
      "source": "usgs-mcs2026-nickel",
      "where": "World Mine Production and Reserves table, 2025e; world total (rounded) 3,900,000 t in 2025e; country shares calculated by Space Mushroom against that total; Recycling; Substitutes paragraph"
    },
    {
      "subject": "Nickel",
      "producers": [],
      "critical_lists": [
        {
          "list": "USGS 2025 List of Critical Minerals",
          "listed": true
        }
      ],
      "substitutes": [],
      "source": "usgs-crit2025",
      "where": "Minerals named on the 2025 list (nickel is named)"
    },
    {
      "subject": "Molybdenum",
      "producers": [
        {
          "country": "China",
          "share_percent": 37.3,
          "year": 2025
        },
        {
          "country": "Chile",
          "share_percent": 16.2,
          "year": 2025
        },
        {
          "country": "United States",
          "share_percent": 15.4,
          "year": 2025
        },
        {
          "country": "Peru",
          "share_percent": 15,
          "year": 2025
        }
      ],
      "critical_lists": [],
      "recycling": "USGS: molybdenum is recycled as a component of catalysts, ferrous scrap and superalloy scrap.",
      "substitutes": [],
      "source": "usgs-mcs2026-molybdenum",
      "where": "World Mine Production and Reserves table, 2025e; world total (rounded) 260,000 in 2025e; country shares calculated by Space Mushroom against that total; Recycling paragraph"
    },
    {
      "subject": "Molybdenum",
      "producers": [],
      "critical_lists": [
        {
          "list": "USGS 2025 List of Critical Minerals",
          "listed": false
        }
      ],
      "substitutes": [],
      "source": "usgs-crit2025",
      "where": "Minerals named on the 2025 list (molybdenum is not named)"
    },
    {
      "subject": "Boron",
      "producers": [],
      "critical_lists": [
        {
          "list": "USGS 2025 List of Critical Minerals",
          "listed": true
        }
      ],
      "substitutes": [],
      "source": "usgs-crit2025",
      "where": "Minerals named on the 2025 list (boron is named); no producer shares for boron were read"
    },
    {
      "subject": "Silicon",
      "producers": [],
      "critical_lists": [
        {
          "list": "USGS 2025 List of Critical Minerals",
          "listed": true
        }
      ],
      "substitutes": [],
      "source": "usgs-crit2025",
      "where": "Minerals named on the 2025 list (silicon is named); no producer shares for silicon were read"
    }
  ],
  "media": [],
  "documents": [
    {
      "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin (ref 2826MB04202011)",
      "type": "datasheet",
      "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
      "year": 2011
    },
    {
      "title": "Material Safety Data Sheet for 2705M, 2826MB, 2826MB3, 2714A, AEHF-1 and 2605CO (version 1)",
      "type": "sds",
      "url": "https://metglas.com/wp-content/uploads/2021/03/2705M-2826MB-2826MB3-2714A-AEHF-1-and-2605CO_SDSFinal.pdf",
      "year": 2020
    },
    {
      "title": "Mineral Commodity Summaries 2026, Nickel (USGS)",
      "type": "report",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-nickel.pdf",
      "year": 2026
    },
    {
      "title": "Mineral Commodity Summaries 2026, Molybdenum (USGS)",
      "type": "report",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-molybdenum.pdf",
      "year": 2026
    }
  ],
  "gaps": [
    "No per-grade composition for 2826MB was printed in the sources read. The SDS composition table covers six alloys (iron, cobalt, nickel, silicon, molybdenum, boron, manganese) and gives ranges by weight; it says cobalt is not present in 2826MB. The composition Fe40Ni38Mo4B18 named in the planning note was not found in any source fetched in this run and is not used.",
    "No UNS, EN, ASTM, JIS, AISI or DIN designation for 2826MB was printed in the sources read. Only the trade name 2826MB is listed.",
    "Vickers hardness of 740 (50 g load) is printed in the bulletin and product page without a unit, so it is left out rather than given a unit that is not printed.",
    "Maximum DC permeability is printed without a unit in the bulletin and product page; the two values are entered as dimensionless numbers.",
    "The SDS relative density of 7.5 to 8 applies to the six-alloy family and is not used as a 2826MB value; the bulletin's 7.90 g/cm3 is used.",
    "No annealing temperature or time for 2826MB is printed. The bulletin shows no-field and longitudinal field anneal curves without values.",
    "No corrosion rate, humidity test, salt-spray result or exposure time for 2826MB was found; higher corrosion resistance is a manufacturer benefit claim with no test.",
    "No space flight, vacuum, cryogenic or radiation data for 2826MB were found in the sources read. AEHF-1 appears only in the SDS product list.",
    "The magnetic shielding use rests on the manufacturer's product page. A 2016 APS abstract on 2826MB shielding was found, but its page gave only a truncated description and did not name 2826MB, so it is not used.",
    "Supply: nickel and molybdenum country shares are calculated by Space Mushroom from the USGS 2025e world totals. No producer shares were read for boron or silicon. Boron and silicon critical-list status is from the USGS 2025 list only.",
    "Property names not in spores/property-canon.yaml and used here: saturation_magnetostriction and crystallization_temperature.",
    "The bulletin is dated 2011 (ref 2826MB04202011). The 2016 URL serves the same bulletin, so it is cited once. The SDS is a combined sheet for six alloys and is dated 07/17/2020.",
    "Wikipedia (amorphous metal article) is used for family history only; it gives no 2826MB value."
  ],
  "story": {
    "why": "METGLAS 2826MB is a nickel-based amorphous metal ribbon from Metglas, Inc. It has no crystal lattice, and the manufacturer lists it for field sensors, shielding, high-frequency cores and magnetomechanical sensors. The bulletin gives a saturation induction of 0.88 T. No space flight or space-environment data for this grade were found in the sources read. Wikipedia's amorphous metal article notes the Metglas family of iron, nickel and boron alloys went into low-loss power distribution transformers; that history is for the family, not this grade.",
    "uses": [
      {
        "where": "Field sensors",
        "line": "The bulletin lists field sensors as an application of 2826MB, with a saturation induction of 0.88 T."
      },
      {
        "where": "Magnetic shielding",
        "line": "The product page lists shielding applications for 2826MB. The page gives no shield test data for this grade."
      },
      {
        "where": "High-frequency cores",
        "line": "The bulletin lists high frequency cores as an application of 2826MB."
      }
    ],
    "can_do": [
      {
        "label": "Saturation induction",
        "line": "The bulletin gives a saturation induction of 0.88 T for 2826MB.",
        "benchmark": "saturation_induction",
        "scope": "material",
        "value": "0.88 T"
      },
      {
        "label": "DC permeability",
        "line": "The bulletin gives a maximum DC permeability of 800,000 when annealed and above 50,000 as cast. The bulletin prints no unit for either value.",
        "benchmark": "dc_permeability",
        "scope": "material",
        "value": "800000 annealed; above 50000 as cast"
      },
      {
        "label": "Continuous service",
        "line": "The bulletin gives a continuous service temperature of 125 °C.",
        "benchmark": "max_service_temp",
        "scope": "material",
        "value": "125 °C"
      },
      {
        "label": "Density",
        "line": "The bulletin gives a density of 7.90 g/cm3 for the ribbon.",
        "benchmark": "density",
        "scope": "material",
        "value": "7.90 g/cm3"
      }
    ],
    "compare": "The bulletin prints values for 2826MB only and gives no comparison table with other grades. The product page lists higher corrosion resistance and lower magnetostriction as benefits, but names no comparison alloys. The compare rows below therefore show the bulletin's own values for 2826MB, with no ranking against another grade.",
    "compare_rows": [
      {
        "label": "Density",
        "benchmark": "density",
        "scope": "material"
      },
      {
        "label": "Saturation induction",
        "benchmark": "saturation_induction",
        "scope": "material"
      },
      {
        "label": "Curie temperature",
        "benchmark": "curie_temperature",
        "scope": "material"
      }
    ],
    "handling": [
      "Take care with sharp or heavy items, and wear personal protective equipment, as the SDS advises.",
      "Keep the product clear of moisture and corrosive material, as the SDS advises for storage.",
      "Keep fumes low when the ribbon is heated or processed, because metal fume fever can follow high concentrations."
    ],
    "good_for": [
      "Field sensors and high-frequency cores, the two uses the bulletin lists first.",
      "Magnetic shielding where high permeability after annealing is needed: the bulletin gives 800000 DC permeability when annealed."
    ],
    "watch_out": [
      "The bulletin is one manufacturer document dated 2011, and it prints no unit for permeability.",
      "No corrosion rate was found. The SDS says moisture and corrosive material are incompatible with the product.",
      "Composition is printed only as ranges for a six-alloy family, so the exact grade composition was not found."
    ],
    "verdict": "METGLAS 2826MB has a full manufacturer bulletin of magnetic and physical values, but its evidence rests on that one 2011 document and a product page. Corrosion, anneal temperature, composition and space behaviour are not documented in the sources read.",
    "recipe": {
      "line": "METGLAS 2826MB is an iron nickel-based amorphous ribbon with molybdenum and boron. The sources read print composition only as weight ranges for a six-alloy family in the SDS, and the SDS says cobalt is not present in 2826MB. The process used to make the ribbon is not printed in the sources read.",
      "parts": [
        {
          "name": "Iron",
          "symbol": "Fe",
          "role": "Named as part of the iron nickel-based grade on the product page; no amount for 2826MB is printed.",
          "share_note": "amount not printed for 2826MB",
          "source": "metglas-web",
          "where": "2826MB product section, title line"
        },
        {
          "name": "Nickel",
          "symbol": "Ni",
          "role": "Named in the bulletin as the base of the grade (nickel-based); no amount for 2826MB is printed.",
          "share_note": "amount not printed for 2826MB",
          "source": "metglas-datasheet",
          "where": "Title block"
        },
        {
          "name": "Molybdenum",
          "symbol": "Mo",
          "role": "Alloying element named in the SDS composition table for the family.",
          "share_note": "range in the six-alloy SDS table only; not 2826MB-specific",
          "source": "metglas-sds",
          "where": "Section 3, composition table"
        },
        {
          "name": "Boron",
          "symbol": "B",
          "role": "Glass former named in the SDS composition table for the family.",
          "share_note": "range in the six-alloy SDS table only; not 2826MB-specific",
          "source": "metglas-sds",
          "where": "Section 3, composition table"
        },
        {
          "name": "Silicon",
          "symbol": "Si",
          "role": "Glass former named in the SDS composition table for the family.",
          "share_note": "range in the six-alloy SDS table only; not 2826MB-specific",
          "source": "metglas-sds",
          "where": "Section 3, composition table"
        }
      ]
    },
    "risk_groups": [
      {
        "title": "For people",
        "lead": "The combined SDS classes the product as an article under normal use, with no GHS classification. Fumes from heating or processing are the main health concern the sheet names.",
        "points": [
          {
            "label": "Fume",
            "line": "The SDS says metal fume fever can follow exposure to high concentrations of fumes."
          },
          {
            "label": "Carcinogen listing",
            "line": "The SDS lists nickel as IARC group 1 and as reasonably anticipated to be a human carcinogen. It gives no nickel amount for 2826MB alone."
          },
          {
            "label": "Edges",
            "line": "The SDS says to take care with items that are sharp or heavy."
          }
        ],
        "level": 1,
        "verdict": "Not classified; fume risk"
      },
      {
        "title": "If the ribbon burns or is heated",
        "lead": "The SDS says there is no specific fire or explosion hazard, but decomposition products may include metal oxides and toxic vapour.",
        "points": [
          {
            "label": "Fire",
            "line": "The SDS says the product has no specific fire or explosion hazard and may give off toxic vapour in a fire."
          },
          {
            "label": "Heating",
            "line": "The bulletin prints a crystallization temperature of 410 °C and does not say what happens to the ribbon above it."
          }
        ],
        "level": 2,
        "verdict": "Toxic vapour in fire"
      },
      {
        "title": "Handling and storage",
        "points": [
          {
            "label": "Storage",
            "line": "The SDS says to store the product under local regulations and to keep it clear of moisture and corrosive material."
          },
          {
            "label": "Incompatibility",
            "line": "The SDS lists moisture and corrosive material as incompatible."
          }
        ],
        "verdict": "Keep dry and clear of corrosives"
      }
    ]
  },
  "updated": "2026-11-01",
  "review": {
    "status": "draft",
    "method": "assistant",
    "checked_values": 14,
    "unreachable": 0,
    "caveats": 3,
    "note": "Read by an AI assistant on 2026-11-01 from the Metglas technical bulletin, the Metglas product page, the combined Metglas SDS, USGS Mineral Commodity Summaries 2026 (nickel and molybdenum), the USGS 2025 critical minerals list, PubChem (nickel) and Wikipedia. Values copied as printed. Supply shares are calculated from the USGS 2025e world totals."
  },
  "sources": {
    "metglas-datasheet": {
      "title": "Metglas Magnetic Alloy 2826MB (nickel-based) Technical Bulletin",
      "id": "Metglas technical bulletin, ref 2826MB04202011, copyright 2003-2011",
      "url": "https://metglas.com/wp-content/uploads/2021/06/2826MB-Magnetic-Alloy-updated.pdf",
      "year": 2011,
      "kind": "datasheet",
      "license": "manufacturer document, linked not reproduced"
    },
    "metglas-web": {
      "title": "METGLAS Magnetic Materials: 2826MB product section (General Properties and Characteristics)",
      "id": "Metglas product page, undated",
      "url": "https://metglas.com/magnetic-materials/",
      "kind": "web",
      "license": "manufacturer web page, linked not reproduced"
    },
    "metglas-sds": {
      "title": "Material Safety Data Sheet for 2705M, 2826MB, 2826MB3, 2714A, AEHF-1 and 2605CO",
      "id": "Metglas SDS, version 1, date of issue 07/17/2020",
      "url": "https://metglas.com/wp-content/uploads/2021/03/2705M-2826MB-2826MB3-2714A-AEHF-1-and-2605CO_SDSFinal.pdf",
      "year": 2020,
      "kind": "datasheet",
      "license": "supplier document, linked not reproduced"
    },
    "usgs-mcs2026-nickel": {
      "title": "Mineral Commodity Summaries 2026, Nickel",
      "id": "USGS MCS 2026, February 2026",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-nickel.pdf",
      "year": 2026,
      "kind": "report",
      "license": "public domain (USGS)"
    },
    "usgs-mcs2026-molybdenum": {
      "title": "Mineral Commodity Summaries 2026, Molybdenum",
      "id": "USGS MCS 2026, February 2026",
      "url": "https://pubs.usgs.gov/periodicals/mcs2026/mcs2026-molybdenum.pdf",
      "year": 2026,
      "kind": "report",
      "license": "public domain (USGS)"
    },
    "usgs-crit2025": {
      "title": "About the 2025 List of Critical Minerals (USGS, 60 minerals, page dated November 6, 2025)",
      "id": "USGS web page, 2025 final list",
      "url": "https://www.usgs.gov/programs/mineral-resources-program/science/about-2025-list-critical-minerals",
      "year": 2025,
      "kind": "web",
      "license": "public domain (USGS)"
    },
    "pubchem-nickel": {
      "title": "PubChem compound record, Nickel (CID 935), Safety and Hazards, GHS Classification",
      "id": "CID 935",
      "url": "https://pubchem.ncbi.nlm.nih.gov/compound/935",
      "kind": "database",
      "license": "public domain (NCBI)"
    },
    "wikipedia-amorphous-metal": {
      "title": "Amorphous metal (Wikipedia; the Metglas redirect lands here)",
      "id": "English Wikipedia article, read for family history only",
      "url": "https://en.wikipedia.org/wiki/Amorphous_metal",
      "kind": "web",
      "license": "CC BY-SA (Wikipedia)"
    }
  },
  "license": "CC-BY-4.0",
  "url": "https://spacemushroom.com/profiles/metglas-2826mb/"
}