Quenched & tempered steel grades
3 quenched & tempered steel grades from 2 designation systems, each with a full data sheet. Sorted by system; the yield and tensile values are the first line of each grade's mechanical table.
AISI / SAE
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Equivalents |
|---|---|---|---|---|---|---|
| 4140 | G41400 | Chromium-molybdenum low-alloy steel (chromoly) | 0.38 – 0.43 | ≈ 415 | ≈ 655 | 42CrMo4, SCM440, 42CrMo |
| 4340 | G43400 | Nickel-chromium-molybdenum low-alloy steel, deep hardening | 0.38 – 0.43 | ≈ 470 | ≈ 745 | 34CrNiMo6, 36CrNiMo4, SNCM439 |
EN (European)
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Equivalents |
|---|---|---|---|---|---|---|
| 42CrMo4 | 1.7225 | Chromium-molybdenum steel for quenching and tempering | 0.38 – 0.45 | 900 | 1100–1300 | 4140, 4142, SCM440 |