Poland · PN
40 HM
PN H94023:2000 — PN H94023
Chemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.38 | 0.45 | ||
| Cr | 0.9 | 1.2 | ||
| Cu | 0.3 | For forgings max.0.15% | For forgings max.0.15% | |
| Mn | 0.4 | 0.7 | ||
| Mo | 0.15 | 0.25 | ||
| Ni | 0.3 | |||
| P | 0.035 | |||
| S | 0.035 | |||
| Si | 0.17 | 0.37 | ||
| Ti | 0.05 | |||
| V | 0.05 | For electrical steels max.0.08% | For electrical steels max.0.08% | |
| W | 0.2 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| forged 100.00 < d ≤ 160.00mm, Tempered | ≥590 (纵向) | 780–930 (纵向) | ≥13 (纵向);for A5;max 13 % for A10 | ≥50 (纵向) | ≥50 (纵向);KCU2; J/cm2 | |
| forged 100.00 < t ≤ 160.00mm, Improved heat treatment | ≥590 | ≥780 | ||||
| forged 16.00 < d ≤ 40.00mm, Tempered | ≥780 (纵向) | 980–1130 (纵向) | ≥11 (纵向);for A5;max 13 % for A10 | ≥45 (纵向) | ≥70 (纵向);KCU2; J/cm2 | |
| forged 16.00 < t ≤ 40.00mm, Improved heat treatment | ≥780 | ≥980 | ||||
| forged 160.00 < d ≤ 250.00mm, Tempered | ≥540 (纵向) | 740–880 (纵向) | ≥14 (纵向);for A5;max 13 % for A10 | ≥50 (纵向) | ≥50 (纵向);KCU2; J/cm2 | |
| forged 160.00 < t ≤ 250.00mm, Improved heat treatment | ≥540 | ≥740 | ||||
| forged 40.00 < d ≤ 100.00mm, Tempered | ≥690 (纵向) | 880–1030 (纵向) | ≥12 (纵向);for A5;max 13 % for A10 | ≥45 (纵向) | ≥50 (纵向);KCU2; J/cm2 | |
| forged 40.00 < t ≤ 100.00mm, Improved heat treatment | ≥690 | ≥880 | ||||
| forged d ≤ 16.00mm, Tempered | ≥880 (纵向) | 1080–1280 (纵向) | ≥10 (纵向);for A5;max 13 % for A10 | ≥45 (纵向) | ≥70 (纵向);KCU2; J/cm2 | |
| forged t ≤ 16.00mm, Improved heat treatment | ≥880 | ≥1080 | ||||
| forged , quenched and tempered | ≥880 | ≥1030 | ≥10 | ≥45 | ≥70 KCU2; J/cm2 | HB ≤241 |