EN 10083-2 — Steels for quenching and tempering. Part 2: Technical delivery conditions for non alloy steels
Scope
Non-alloy steels for quenching and tempering: C22 to C60 and their E (P ≤ 0.030) and R (controlled S) variants, plus 28Mn6. Specifies chemistry, hardenability, and mechanical properties in the +N and +QT conditions by ruling section. Part 1 covers general delivery conditions; Part 3 the alloy grades (42CrMo4 etc.).
Grades covered by EN 10083-2
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Nearest equivalents |
|---|---|---|---|---|---|---|
| C45 | 1.0503 | Medium-carbon steel for quenching and tempering | 0.42 – 0.5 | 340 | ≥ 620 | 1045, S45C, 45 |
Revision history and superseded standards
| Year | Change |
|---|---|
| 1991 | EN 10083-2:1991 — first edition replacing DIN 17200 unalloyed grades |
| 2006 | EN 10083-2:2006 — current; C35R/C45R/C55R free-machining variants, Table 5/6 revised |
Supersedes: DIN 17200:1987 (C45, Ck45, Cm45); EN 10083-2:1991.
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