ASTM A646
astm-a646Grades that cite ASTM A646
The grades in our database whose sources name ASTM A646. Each row shows how the source prints it, the product form the source ties to it where it says so, and the strength we hold for the grade. This is a finding aid, not the standard: the current text of ASTM A646 is sold by its publisher.
| Grade | As printed | Yield strength | Tensile strength |
|---|---|---|---|
| 300M ultra-high-strength steel (UNS K44220) | A646 | at least 1,517 MPa | at least 1,862 MPa |
| Alloy steel AISI 4140 | A646 | 570 to 1,235 MPa | 745 to 1,283 MPa |
| Alloy steel AISI 4340 | A646 | at least 665 MPa | 745 to 1,550 MPa |
Ranges run across the tempers and conditions each source reports, so a heat-treatable grade shows a wide range. Open a grade for each value with its condition and source.
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