Tenax HTA carbon fibre HTA40
Carbon filament, composed mostly of carbon atoms (Wikipedia definition)
Also known as Tenax, HTA40, HTA40 E13 3K 200tex
Tenax HTA40 is a Teijin carbon fibre filament in the standard-modulus group.
Evidence level
2 of 5
Lab-measured
- 0Predicted only. No one has made it, or no measurement exists.
- 1Calculated. Only calculated or predicted values from sources.
- 2Lab-measured. Measured properties with their conditions stated.
- 3Space-relevant tests. Measured in conditions relevant to space, such as vacuum or atomic oxygen.
- 4Ground-qualified. Qualified for an application on the ground.
- 5Flown or field-proven. Flight or field results exist.
Recipe, share of the weight
- not statedCarbon
Best for
Stiffness and strength along the fibre at a density of 1.77 g/cm3 (Teijin typical values for Tenax HTA40)
Weakest at
No HTA40 ageing, oxidation or outgassing data in the sources read, and no grade-specific hazard data
Risk at a glance
- People Low. Dust can irritate; no classification in the SDS read
- If it fails High. Violent reaction with strong oxidisers
- Corrosion No data. No corrosion data recorded
Quick facts: HTA40
| Property | Value | Basis |
|---|---|---|
| Density | 1.77 g/cm³ | 1 sourced value |
| Tensile strength | 963 to 4,100 MPa | 2 sourced values across conditions |
| Young's modulus | 60 to 240 GPa | 3 sourced values across conditions |
What is the density of Tenax HTA carbon fibre (HTA40)?
Tenax HTA carbon fibre (HTA40) has a density of 1.77 g/cm³. The source and test conditions are listed in the properties table on this page.
What is the tensile strength of Tenax HTA carbon fibre (HTA40)?
Tenax HTA carbon fibre (HTA40) has a tensile strength of 963 to 4,100 MPa. The range covers 2 sourced values across the tempers, forms and test conditions the sources report; room-temperature values are used where a source states a temperature.
What is the Young's modulus of Tenax HTA carbon fibre (HTA40)?
Tenax HTA carbon fibre (HTA40) has a Young's modulus of 60 to 240 GPa. The range covers 3 sourced values across the tempers, forms and test conditions the sources report; room-temperature values are used where a source states a temperature.
What are the other names and codes for Tenax HTA carbon fibre (HTA40)?
Tenax HTA carbon fibre (HTA40) is also written as Tenax, HTA40, HTA40 E13 3K 200tex. Each code is printed in the source listed beside it in the designations table.
What is Tenax HTA carbon fibre (HTA40) used for?
Uses recorded in the sources include Aerospace, automotive and industrial parts made from Tenax filament yarn (general Teijin statement; HTA40 is not named); PEEK thermoplastic laminate with HTA40 fabric (Tenax-E TPWF PEEK HTA40).
Why it exists
Tenax HTA40 is a Teijin carbon fibre filament in the standard-modulus group. Teijin's typical values give a tensile strength of 4100 MPa and a tensile modulus of 240 GPa on bare filament. The same row prints 230 GPa on a second test method. The density is 1.77 g/cm3, so stiffness and strength per unit mass are the reason to use it. The sources read give no HTA40 data for oxidation, ageing or outgassing, so the fibre cannot yet be ranked for space use.
Where it's used
Structures in aerospace, automotive and industrial parts
Teijin says its Tenax filament yarn is used in products made for aerospace, automotive and several industrial applications. The statement covers the filament yarn range as a whole, not HTA40 alone.
PEEK thermoplastic laminate
Teijin publishes a PEEK laminate built from HTA40 fabric. Its data sheet gives a laminate tensile strength of 963 MPa at 0 degrees, but names no end use.
Recipe
Carbon filament, composed mostly of carbon atoms (Wikipedia definition); no composition for HTA40 is printed in the sources read
Carbon fibre is a filament composed mostly of carbon atoms (Wikipedia). The sources read do not state the precursor or the process used for Tenax HTA40; Wikipedia lists polyacrylonitrile, rayon and pitch as the general precursors.
| Ingredient | Share of the weight | What it does |
|---|---|---|
| Carbon | not stated | Forms the graphitic filament. The stiffness and strength along the fibre come from the carbon structure, and the fibre diameter is set by the product grade. |
Weight shares are as printed in the sources.
What it can do
Tensile strength
Carry tensile loads along the fibre at a typical strength of 4100 MPa (Teijin overview, bare filament).
Tensile modulus
Give a typical tensile modulus of 240 GPa along the fibre, with 230 GPa on a second test method (Teijin overview).
Low mass
The typical density is 1.77 g/cm3 (Teijin overview).
Laminate strength
Make a PEEK laminate with a typical tensile strength of 963 MPa at 0 degrees (Teijin laminate sheet; composite value, not fibre).
How it compares
Among the Teijin fibre data read for this profile, Tenax HTA40 is the standard-modulus grade with a typical tensile strength of 4100 MPa, a tensile modulus of 240 GPa and a density of 1.77 g/cm3 (Teijin overview). Its elongation at break is 1.7 %. The PEEK laminate built from the same fibre reaches 963 MPa in tension and 1166 MPa in flexure at 0 degrees, but those are composite values and cannot be compared with bare-fibre strength. No comparison with other Tenax grades is made, because their values were not part of the sources read for this profile.
The same measurements for each material, so you can compare them. Each row names the key condition under the value; the full conditions and methods are in the numbered notes under Technical details. Compare every grade in the family.
| Measurement | HTA40 |
|---|---|
| Physical and electrical | |
| Density, Tenax HTA40 E13 3K 200tex 15Z fibre | 1.77 g/cm³5 |
| Linear density (yield without sizing), Tenax HTA40 E13 3K fibre | 200 tex7 |
| Temperature behavior | |
| Glass transition temperature, Tenax-E PEEK laminate with HTA40 fabric | 143 °C14 |
| Other measurements | |
| Tensile strength, Tenax HTA40 E13 3K 200tex 15Z fibre | 4100 MPa1 |
| Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (first test method) | 240 GPa2 |
| Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (second test method) | 230 GPa3 |
| Elongation at break, Tenax HTA40 E13 3K 200tex 15Z fibre | 1.7 %4 |
| Filament diameter, Tenax HTA40 fibre | 7 µm6 |
| Sizing level, Tenax HTA40 E13 3K 200tex 15Z fibre | 1.3 %8 |
| Tensile strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | 963 MPa9 |
| Tensile modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | 60 GPa10 |
| Flexural strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | 1166 MPa11 |
| Flexural modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | 64 GPa12 |
| Compression strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | 725 MPa13 |
Why choose it, and why not
Good for
- Stiff, strong load paths along the fibre, where the 1.77 g/cm3 density matters (Teijin typical values).
- Thermoplastic composite laminates with a PEEK matrix, which Teijin sells with HTA40 fabric (Teijin laminate sheet).
Watch out for
- All Teijin fibre values are typical values, which Teijin says are not guaranteed.
- No HTA40 ageing, oxidation or outgassing data in the sources read.
- The only safety data sheet read is for a different carbon thread product.
Tenax HTA40 is a standard-modulus carbon fibre with typical values of 4100 MPa tensile strength and 240 GPa modulus at 1.77 g/cm3, according to Teijin. Its behaviour in space is not documented in the sources read, and its hazard data come from a different product.
Technical details
For scientists and researchers. Everything above comes from the record below: every number with its method, its conditions and its source.
Other names and standards
The same grade under other systems, as datasheets and standards print them. Each code was checked against the page it comes from.
| System | Codes |
|---|---|
| Trade name | Tenax, HTA40, HTA40 E13 3K 200tex |
Notes
The method, full conditions and any caveat for the numbered rows above.
| # | Measurement | Method | Conditions | Caveat |
|---|---|---|---|---|
| 1 | Tensile strength, Tenax HTA40 E13 3K 200tex 15Z fibre | Typical value printed in the Teijin product overview, MPa column | fibre Tenax HTA40 E13 3K 200tex 15Z, bare filamentbasis typical value, as the Teijin overview states that all data are typical values | — |
| 2 | Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (first test method) | Typical value printed in the Teijin product overview, GPa column | fibre Tenax HTA40 E13 3K 200tex 15Z, bare filamentbasis first printed modulus pair in the row | — |
| 3 | Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (second test method) | Typical value printed in the Teijin product overview, second modulus pair in the row | fibre Tenax HTA40 E13 3K 200tex 15Z, bare filamentbasis second test method printed in the same row; the Teijin overview gives a different test method for this pair | The overview prints two moduli for this row. The first pair (240 GPa) is the one used in the story. |
| 4 | Elongation at break, Tenax HTA40 E13 3K 200tex 15Z fibre | Typical value printed in the Teijin product overview | fibre Tenax HTA40 E13 3K 200tex 15Z, bare filament | — |
| 5 | Density, Tenax HTA40 E13 3K 200tex 15Z fibre | Typical value printed in the Teijin product overview; the PEEK laminate data sheet prints the same 1.77 g/cm3 for the HTA40 E13 3K 200tex fibre | fibre Tenax HTA40 E13 3K 200tex 15Z, bare filament | — |
| 6 | Filament diameter, Tenax HTA40 fibre | Value printed in the Teijin product overview, filament diameter column (not in the property canon; snake_case name used) | fibre Tenax HTA40 E13 3K 200tex 15Z | — |
| 7 | Linear density (yield without sizing), Tenax HTA40 E13 3K fibre | Printed yield value in the Teijin product overview; the German sheet gives the same value under Garnfeinheit (ohne Präparation) | fibre Tenax HTA40 E13 3K, before sizing | Not in the property canon; snake_case name used. The 1K and 6K HTA40 tows have their own yield values in the same table and are not profiled here. |
| 8 | Sizing level, Tenax HTA40 E13 3K 200tex 15Z fibre | Value printed in the Teijin product overview, size level column (not in the property canon; snake_case name used) | fibre Tenax HTA40 E13 3K 200tex 15Zsizing type EP as printed in the overview | — |
| 9 | Tensile strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | Typical value printed in the Teijin laminate data sheet, tensile strength (0 degree) row | material Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285 (PEEK matrix, 5HS fabric)direction 0 degreetest EN ISO 527-4conditioning 23 °C / 50 % r.h. | — |
| 10 | Tensile modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | Typical value printed in the Teijin laminate data sheet, modulus row under tensile | material Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285direction 0 degreetest EN ISO 527-4conditioning 23 °C / 50 % r.h. | — |
| 11 | Flexural strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | Typical value printed in the Teijin laminate data sheet, flexure strength row | material Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285direction 0 degreetest EN 2562 Aconditioning 23 °C / 50 % r.h. | — |
| 12 | Flexural modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | Typical value printed in the Teijin laminate data sheet, flexure modulus row | material Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285direction 0 degreetest EN 2562 Aconditioning 23 °C / 50 % r.h. | — |
| 13 | Compression strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction) | Typical value printed in the Teijin laminate data sheet, compression strength row (not in the property canon; snake_case name used) | material Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285direction 0 degreetest EN 2850 B1/B2conditioning 23 °C / 50 % r.h. | — |
| 14 | Glass transition temperature, Tenax-E PEEK laminate with HTA40 fabric | Typical value printed in the Teijin laminate data sheet, glass transition row | material Laminate, not the bare fibre: PEEK matrix of Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285test ISO 11357conditioning 23 °C / 50 % r.h. | — |
Risks and side effects
Hazards to people, what happens when a cell overheats, and how the material is handled and stored.
For people
The only safety data sheet read is for a high-purity carbon thread from another supplier, not for Tenax HTA40. It says the product does not meet the criteria for classification, but it warns about dust.
- Dust
- The sheet says inhalation of dust may irritate the respiratory system and dust can cause eye irritation.
- Classification
- The sheet says the substance does not meet the criteria for classification.
If it fails
The failure mode read for this fibre family is a violent reaction with strong oxidisers and peroxides.
- Oxidisers
- The sheet says violent reactions may occur with strong oxidisers and peroxides. It is a generic thread sheet, so it is a warning for the material class, not a measured HTA40 result.
Handling and storage
- Dust
- Avoid creating or accumulating dust. Dust control and eye protection are listed in the sheet's control procedures.
- Oxidisers
- Keep the fibre away from strong oxidisers and peroxides.
Test details
The original wording and numbers from the sources, for readers who want them.
Failure risks
| Failure | Trigger and consequence |
|---|---|
| Violent reaction with strong oxidisershigh severity | Contact with strong oxidisers or peroxides (incompatible materials)The Rave sheet says violent reactions may occur. The sheet is for a generic high-purity thread, not for Tenax HTA40. |
Handling and storage
- Avoid creating or accumulating dust or fine particles.
- Keep away from strong oxidisers and peroxides.
Supply and geography
How common the raw materials are and where they come from.
Carbon fibre precursor (polyacrylonitrile, rayon or pitch)
Not applicable: a synthetic fibre made from a polymer or pitch precursor; Wikipedia lists polyacrylonitrile, rayon and pitch as the precursors.
Documents
Datasheets, safety data sheets, papers and standards you can open.
Full record
The complete spore, as stored. Free to reuse under CC-BY-4.0. Images keep the licence shown with each one.
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spore: profile
id: tenax-hta
spore_version: 0.2
family: carbon-materials
name: Tenax HTA carbon fibre
abbreviation: HTA40
role: reinforcing fibre
category: carbon
type: carbon-fiber
summary: |
Tenax HTA40 is a Teijin carbon fibre filament in the standard-modulus group. Teijin's typical values for the E13 3K 200tex 15Z product give a tensile strength of 4100 MPa and a tensile modulus of 240 GPa on bare filament, with a density of 1.77 g/cm3. Teijin also lists a PEEK laminate built from HTA40 fabric, with a tensile strength of 963 MPa in the 0 degree direction. The sources read give no HTA40 data for oxidation, ageing or outgassing, and the only safety data sheet read is for a different carbon thread product.
best_for: Stiffness and strength along the fibre at a density of 1.77 g/cm3 (Teijin typical values for Tenax HTA40)
weakest_at: No HTA40 ageing, oxidation or outgassing data in the sources read, and no grade-specific hazard data
identity:
formula: Carbon filament, composed mostly of carbon atoms (Wikipedia definition); no composition for HTA40 is printed in the sources read
source: teijin-overview
where: Product overview, HTA40 rows (grade, filament count, yield and filament diameter columns); composition from the Wikipedia Carbon fibers article
designations:
- system: Trade name
code: Tenax
source: teijin-overview
where: Document title, Tenax filament yarn overview
- system: Trade name
code: HTA40
source: teijin-overview
where: Fiber family column, HTA40 rows
- system: Trade name
code: HTA40 E13 3K 200tex
source: teijin-tpwf-laminate
where: Carbon Fiber line of the PEEK laminate data sheet
tags:
environments: []
stresses: []
applications:
- structures
properties:
- benchmark: ultimate_tensile_strength
label: Tensile strength, Tenax HTA40 E13 3K 200tex 15Z fibre
value: 4100
unit: MPa
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z, bare filament
basis: typical value, as the Teijin overview states that all data are typical values
method: Typical value printed in the Teijin product overview, MPa column
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, tensile strength columns
- benchmark: elastic_modulus
label: Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (first test method)
value: 240
unit: GPa
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z, bare filament
basis: first printed modulus pair in the row
method: Typical value printed in the Teijin product overview, GPa column
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, tensile modulus columns
- benchmark: elastic_modulus
label: Tensile modulus, Tenax HTA40 E13 3K 200tex 15Z fibre (second test method)
value: 230
unit: GPa
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z, bare filament
basis: second test method printed in the same row; the Teijin overview gives a different test method for this pair
method: Typical value printed in the Teijin product overview, second modulus pair in the row
status: ground
note: The overview prints two moduli for this row. The first pair (240 GPa) is the one used in the story.
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, second tensile modulus pair
- benchmark: elongation
label: Elongation at break, Tenax HTA40 E13 3K 200tex 15Z fibre
value: 1.7
unit: '%'
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z, bare filament
method: Typical value printed in the Teijin product overview
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, elongation at break column
- benchmark: density
label: Density, Tenax HTA40 E13 3K 200tex 15Z fibre
value: 1.77
unit: g/cm3
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z, bare filament
method: Typical value printed in the Teijin product overview; the PEEK laminate data sheet prints the same 1.77 g/cm3 for the HTA40 E13 3K 200tex fibre
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, density column
- benchmark: filament_diameter
label: Filament diameter, Tenax HTA40 fibre
value: 7
unit: µm
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z
method: Value printed in the Teijin product overview, filament diameter column (not in the property canon; snake_case name used)
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, filament diameter column
- benchmark: linear_density
label: Linear density (yield without sizing), Tenax HTA40 E13 3K fibre
value: 200
unit: tex
scope: material
conditions:
fibre: Tenax HTA40 E13 3K, before sizing
method: Printed yield value in the Teijin product overview; the German sheet gives the same value under Garnfeinheit (ohne Präparation)
status: ground
note: Not in the property canon; snake_case name used. The 1K and 6K HTA40 tows have their own yield values in the same table and are not profiled here.
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, yield (without sizing) column
- benchmark: sizing_content
label: Sizing level, Tenax HTA40 E13 3K 200tex 15Z fibre
value: 1.3
unit: '%'
scope: material
conditions:
fibre: Tenax HTA40 E13 3K 200tex 15Z
sizing_type: EP as printed in the overview
method: Value printed in the Teijin product overview, size level column (not in the property canon; snake_case name used)
status: ground
source: teijin-overview
where: Product overview table, row HTA40 E13 3K 200tex 15Z, sizing and size level columns
- benchmark: ultimate_tensile_strength
label: Tensile strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction)
value: 963
unit: MPa
scope: material
conditions:
material: 'Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285 (PEEK matrix, 5HS fabric)'
direction: 0 degree
test: EN ISO 527-4
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, tensile strength (0 degree) row
status: ground
source: teijin-tpwf-laminate
where: Properties table, Tensile (0 degree), strength row
- benchmark: elastic_modulus
label: Tensile modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction)
value: 60
unit: GPa
scope: material
conditions:
material: 'Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285'
direction: 0 degree
test: EN ISO 527-4
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, modulus row under tensile
status: ground
source: teijin-tpwf-laminate
where: Properties table, Tensile (0 degree), modulus row
- benchmark: flexural_strength
label: Flexural strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction)
value: 1166
unit: MPa
scope: material
conditions:
material: 'Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285'
direction: 0 degree
test: EN 2562 A
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, flexure strength row
status: ground
source: teijin-tpwf-laminate
where: Properties table, Flexure (0 degree), strength row
- benchmark: flexural_modulus
label: Flexural modulus, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction)
value: 64
unit: GPa
scope: material
conditions:
material: 'Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285'
direction: 0 degree
test: EN 2562 A
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, flexure modulus row
status: ground
source: teijin-tpwf-laminate
where: Properties table, Flexure (0 degree), modulus row
- benchmark: compressive_strength
label: Compression strength, Tenax-E PEEK laminate with HTA40 fabric (0 degree direction)
value: 725
unit: MPa
scope: material
conditions:
material: 'Laminate, not the bare fibre: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285'
direction: 0 degree
test: EN 2850 B1/B2
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, compression strength row (not in the property canon; snake_case name used)
status: ground
source: teijin-tpwf-laminate
where: Properties table, Compression (0 degree), strength row
- benchmark: glass_transition_temperature
label: Glass transition temperature, Tenax-E PEEK laminate with HTA40 fabric
value: 143
unit: °C
scope: material
conditions:
material: 'Laminate, not the bare fibre: PEEK matrix of Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285'
test: ISO 11357
conditioning: 23 °C / 50 % r.h.
method: Typical value printed in the Teijin laminate data sheet, glass transition row
status: ground
source: teijin-tpwf-laminate
where: Properties table, Glass Transition Temperature row
corrosion: []
risks:
hazards:
- text: The Rave safety data sheet for a high-purity carbon fibre thread (a different product from Tenax HTA40, sold under CAS 7782-42-5) says the substance does not meet the criteria for classification.
ghs: []
source: rave-cf-sds
where: Section 2.1 (classification)
- text: The same Rave sheet says inhalation of dust may irritate the respiratory system and dust can cause eye irritation.
ghs: []
source: rave-cf-sds
where: Section 11 (symptoms related to toxicological characteristics)
failure_risks:
- mode: Violent reaction with strong oxidisers
trigger: Contact with strong oxidisers or peroxides (incompatible materials)
consequence: The Rave sheet says violent reactions may occur. The sheet is for a generic high-purity thread, not for Tenax HTA40.
severity: high
source: rave-cf-sds
where: Section 10.3 (possibility of hazardous reactions) and section 10.5 (incompatible materials)
side_effects: []
handling:
- text: Avoid creating or accumulating dust or fine particles.
source: rave-cf-sds
where: Section 10.4 (conditions to avoid) and control procedures
- text: Keep away from strong oxidisers and peroxides.
source: rave-cf-sds
where: Section 10.5 (incompatible materials)
mitigations: []
uses:
- application: structures
device: Aerospace, automotive and industrial parts made from Tenax filament yarn (general Teijin statement; HTA40 is not named)
example: Teijin says its Tenax filament yarn is used in products made for aerospace, automotive and several industrial applications.
source: teijin-filament-page
where: Introduction paragraph of the filament yarn page
- application: structures
device: PEEK thermoplastic laminate with HTA40 fabric (Tenax-E TPWF PEEK HTA40)
example: Teijin publishes a PEEK laminate built from HTA40 fabric and gives its strength values, but the data sheet names no end use.
source: teijin-tpwf-laminate
where: Product data sheet, header block and properties table
supply:
- subject: Carbon fibre precursor (polyacrylonitrile, rayon or pitch)
abundance: 'Not applicable: a synthetic fibre made from a polymer or pitch precursor; Wikipedia lists polyacrylonitrile, rayon and pitch as the precursors.'
producers: []
manufacture: 'The sources read do not say where Tenax HTA40 filament is made. Teijin''s downloads page lists quality certificates for Teijin Limited sites at Mishima and Ibigawa (Japan), for Teijin Carbon America at Rockwood and Greenwood (USA), and for Teijin Carbon Europe without a site name. The PEEK laminate data sheet prints ''Production site: Europe'' for that laminate only.'
source: teijin-downloads
where: Downloads page, certificate sections; PEEK laminate data sheet, header block
media: []
documents:
- title: Tenax filament yarn product overview (Teijin Carbon, PDS dated 2026-04-15)
type: datasheet
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/Filament_Yarn/EU_Filament_overview.pdf
year: 2026
- title: 'Produktdatenblatt TSG01de: Tenax filament yarn (Teijin Carbon Europe, 2025-02-15)'
type: datasheet
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/Filament_Yarn/Product_Data_Sheet_TSG01de__EU_Filament__de____DE_.pdf
year: 2025
- title: 'Product data sheet: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285 (Teijin, version 1.2)'
type: datasheet
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/ThermoPlastics/TPWF/PEEK/Product_Data_Sheet_TSPTP201__6200_Tenax%E2%84%A2-E_TPWF_PEEK-4-42-HTA40_E13_3K_DT-5HS-285_.pdf
year: 2022
- title: 'Safety data sheet: High purity carbon fibers in carbon fiber threads, SDS00170CC1016 v4.0 (Rave Scientific, not a Tenax grade)'
type: sds
url: https://ravescientific.com/images/pdf/SDS00170CC1016-01_Carbon_Fibre.pdf
year: 2022
gaps:
- No ageing, oxidation, UV, atomic-oxygen or outgassing data for Tenax HTA40 fibre was found in the sources read; corrosion is left empty for that reason.
- The precursor (polyacrylonitrile, rayon or pitch) and the process used for Tenax HTA40 are not stated in any Teijin page read. Wikipedia lists the general precursors only.
- No Teijin safety data sheet for HTA40 was found. The Rave sheet is for a high-purity carbon thread (CAS 7782-42-5), not a Tenax grade, and is used only as a general hazard reference.
- The Teijin filament yarn handling recommendation (linked from the downloads page) is an image-only PDF; no text could be extracted from it.
- PubChem's GHS summary for acrylonitrile, the precursor monomer, could not be read (the site returned an automated-access check page), so no precursor hazard entry is given.
- No production share by country and no production site for the HTA40 fibre itself were found in any source read.
- Thermal conductivity, specific heat and coefficient of thermal expansion for Tenax HTA40 were not found. Values for Toray T700S are not used because they are a different fibre.
- Matweb's HTA40 datasheet page returned HTTP 403 and was not read.
- No UNS, EN or ISO designation for this fibre was found in a source read.
- The overview gives typical values only; no minimum or guaranteed values were found.
- Filament diameter, linear density (yield) and sizing level are not in the property canon; written as snake_case names. Severity 'high' for the violent-reaction failure mode is assigned by Space Mushroom from the SDS wording.
- The laminate rows are PEEK laminate values with HTA40 fabric, not bare-fibre values, and are labelled as such. The Airbus nacelle prepreg mentioned by a search result was not confirmed as HTA40 and is not used.
license: CC-BY-4.0
updated: '2026-11-01'
review:
status: draft
method: assistant
checked_values: 14
unreachable: 2
caveats: 4
note: 'Written by an AI assistant on 2026-11-01 from Teijin pages and PDFs read in this run. Unreachable: the Matweb HTA40 page (HTTP 403) and the PubChem acrylonitrile record (automated-access check). Caveats: all Teijin fibre values are typical values from the overview; the 230 GPa modulus is a second test method; the laminate rows are composite values, not fibre values; the hazard data come from a different carbon thread product.'
story:
recipe:
line: Carbon fibre is a filament composed mostly of carbon atoms (Wikipedia). The sources read do not state the precursor or the process used for Tenax HTA40; Wikipedia lists polyacrylonitrile, rayon and pitch as the general precursors.
parts:
- name: Carbon
share: Composed mostly of carbon atoms (Wikipedia); no share for HTA40 is printed in the sources read
role: Forms the graphitic filament. The stiffness and strength along the fibre come from the carbon structure, and the fibre diameter is set by the product grade.
risk_groups:
- title: For people
level: 1
verdict: Dust can irritate; no classification in the SDS read
lead: The only safety data sheet read is for a high-purity carbon thread from another supplier, not for Tenax HTA40. It says the product does not meet the criteria for classification, but it warns about dust.
points:
- label: Dust
line: The sheet says inhalation of dust may irritate the respiratory system and dust can cause eye irritation.
- label: Classification
line: The sheet says the substance does not meet the criteria for classification.
- title: If it fails
lead: The failure mode read for this fibre family is a violent reaction with strong oxidisers and peroxides.
points:
- label: Oxidisers
line: The sheet says violent reactions may occur with strong oxidisers and peroxides. It is a generic thread sheet, so it is a warning for the material class, not a measured HTA40 result.
- title: Handling and storage
points:
- label: Dust
line: Avoid creating or accumulating dust. Dust control and eye protection are listed in the sheet's control procedures.
- label: Oxidisers
line: Keep the fibre away from strong oxidisers and peroxides.
why: Tenax HTA40 is a Teijin carbon fibre filament in the standard-modulus group. Teijin's typical values give a tensile strength of 4100 MPa and a tensile modulus of 240 GPa on bare filament. The same row prints 230 GPa on a second test method. The density is 1.77 g/cm3, so stiffness and strength per unit mass are the reason to use it. The sources read give no HTA40 data for oxidation, ageing or outgassing, so the fibre cannot yet be ranked for space use.
uses:
- where: Structures in aerospace, automotive and industrial parts
line: Teijin says its Tenax filament yarn is used in products made for aerospace, automotive and several industrial applications. The statement covers the filament yarn range as a whole, not HTA40 alone.
- where: PEEK thermoplastic laminate
line: Teijin publishes a PEEK laminate built from HTA40 fabric. Its data sheet gives a laminate tensile strength of 963 MPa at 0 degrees, but names no end use.
can_do:
- label: Tensile strength
line: Carry tensile loads along the fibre at a typical strength of 4100 MPa (Teijin overview, bare filament).
- label: Tensile modulus
line: Give a typical tensile modulus of 240 GPa along the fibre, with 230 GPa on a second test method (Teijin overview).
- label: Low mass
line: The typical density is 1.77 g/cm3 (Teijin overview).
- label: Laminate strength
line: Make a PEEK laminate with a typical tensile strength of 963 MPa at 0 degrees (Teijin laminate sheet; composite value, not fibre).
compare: Among the Teijin fibre data read for this profile, Tenax HTA40 is the standard-modulus grade with a typical tensile strength of 4100 MPa, a tensile modulus of 240 GPa and a density of 1.77 g/cm3 (Teijin overview). Its elongation at break is 1.7 %. The PEEK laminate built from the same fibre reaches 963 MPa in tension and 1166 MPa in flexure at 0 degrees, but those are composite values and cannot be compared with bare-fibre strength. No comparison with other Tenax grades is made, because their values were not part of the sources read for this profile.
compare_rows:
- label: Strength along the fibre
benchmark: ultimate_tensile_strength
- label: Stiffness along the fibre
benchmark: elastic_modulus
- label: Density
benchmark: density
handling:
- Avoid creating or accumulating dust, and use eye protection where dust forms (Rave sheet, a generic thread product).
- Keep the fibre away from strong oxidisers and peroxides (Rave sheet).
- Check the safety data sheet for the Tenax grade you handle; none was found for HTA40 in the sources read.
good_for:
- Stiff, strong load paths along the fibre, where the 1.77 g/cm3 density matters (Teijin typical values).
- Thermoplastic composite laminates with a PEEK matrix, which Teijin sells with HTA40 fabric (Teijin laminate sheet).
watch_out:
- All Teijin fibre values are typical values, which Teijin says are not guaranteed.
- No HTA40 ageing, oxidation or outgassing data in the sources read.
- The only safety data sheet read is for a different carbon thread product.
verdict: Tenax HTA40 is a standard-modulus carbon fibre with typical values of 4100 MPa tensile strength and 240 GPa modulus at 1.77 g/cm3, according to Teijin. Its behaviour in space is not documented in the sources read, and its hazard data come from a different product.
sources:
teijin-overview:
title: 'Product overview: Tenax and Tenax Next filament yarn (Teijin Carbon, PDS dated 2026-04-15)'
id: Teijin Carbon, PDS 2026-04-15, page 1 of 2
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/Filament_Yarn/EU_Filament_overview.pdf
year: 2026
kind: datasheet
license: manufacturer datasheet, values quoted for reference
teijin-tsg01:
title: 'Produktdatenblatt TSG01de: Tenax filament yarn, EU filament (Teijin Carbon Europe)'
id: Teijin Carbon Europe, product data sheet TSG01de, dated 2025-02-15
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/Filament_Yarn/Product_Data_Sheet_TSG01de__EU_Filament__de____DE_.pdf
year: 2025
kind: datasheet
license: manufacturer datasheet, values quoted for reference
teijin-tpwf-laminate:
title: 'Product data sheet: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285 (Teijin Carbon)'
id: Teijin, product key 6200, version 1.2, dated 2022-03-01
url: https://www.teijincarbon.com/fileadmin/user_upload/Datenbl%C3%A4tter/ThermoPlastics/TPWF/PEEK/Product_Data_Sheet_TSPTP201__6200_Tenax%E2%84%A2-E_TPWF_PEEK-4-42-HTA40_E13_3K_DT-5HS-285_.pdf
year: 2022
kind: datasheet
license: manufacturer datasheet, values quoted for reference
teijin-filament-page:
title: 'Filament yarn page (Teijin Carbon): typical applications, product tables and processing methods'
id: Teijin Carbon web page, read in this run
url: https://www.teijincarbon.com/products/filament-yarn/
year: 2026
kind: web
license: manufacturer web page, quoted for reference
teijin-downloads:
title: 'Downloads (Teijin Carbon): product data sheets, handling recommendation and certificates'
id: Teijin Carbon web page, read in this run
url: https://www.teijincarbon.com/downloads/
year: 2026
kind: web
license: manufacturer web page, quoted for reference
teijin-consolidated:
title: 'Consolidated laminates (Teijin Carbon): thermoplastic products with HTA40'
id: Teijin Carbon web page, read in this run
url: https://www.teijincarbon.com/products/thermoplastics/consolidated-laminates/
year: 2026
kind: web
license: manufacturer web page, quoted for reference
rave-cf-sds:
title: 'Safety data sheet: High purity carbon fibers in carbon fiber threads, SDS00170CC1016 v4.0 (Rave Scientific)'
id: Rave Scientific, Regulation (EC) No 1907/2006 Art. 31, dated October 5th 2022; CAS 7782-42-5
url: https://ravescientific.com/images/pdf/SDS00170CC1016-01_Carbon_Fibre.pdf
year: 2022
kind: datasheet
license: supplier safety data sheet, quoted for reference
wiki-carbon-fibre:
title: 'Carbon fibers (Wikipedia article): definition and precursors only'
id: Wikipedia, article Carbon fibers
url: https://en.wikipedia.org/wiki/Carbon_fibers
year: 2026
kind: web
license: CC BY-SA 4.0
References
Every number above carries a reference number. Click one to see the source and where in it the value comes from.
| # | Source | Type | Year | Used for |
|---|---|---|---|---|
| Product overview: Tenax and Tenax Next filament yarn (Teijin Carbon, PDS dated 2026-04-15) | datasheet | 2026 | 9 values | |
| Produktdatenblatt TSG01de: Tenax filament yarn, EU filament (Teijin Carbon Europe) | datasheet | 2025 | 0 values | |
| Product data sheet: Tenax-E TPWF PEEK-4-42-HTA40 E13 3K DT-5HS-285 (Teijin Carbon) | datasheet | 2022 | 7 values | |
| Filament yarn page (Teijin Carbon): typical applications, product tables and processing methods | web | 2026 | 1 value | |
| Downloads (Teijin Carbon): product data sheets, handling recommendation and certificates | web | 2026 | 1 value | |
| Consolidated laminates (Teijin Carbon): thermoplastic products with HTA40 | web | 2026 | 0 values | |
| Safety data sheet: High purity carbon fibers in carbon fiber threads, SDS00170CC1016 v4.0 (Rave Scientific) | datasheet | 2022 | 5 values | |
| Carbon fibers (Wikipedia article): definition and precursors only | web | 2026 | 0 values |
Updated