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C | Si | Mn | Cr | Ni | Mo | Cu | £m b Mpa | £m 0.2 | £_ % |
0.03 | 0.65 | 1.0~2.5 | 20.0~23.0 | 25.0~28.0 | 4.5~6.0 | 2.0 | 510 | 320 | 25 |
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C | Si | Mn | Cr | Ni | N | £m b | £m 0.2 | £_ % |
0.08 | 0.65 | 1.0~2.5 | 19.0~21.5 | 9.0~11.0 | 10XC%~1.0 | 550 | 350 | 25 |
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C | Si | Mn | Cr | Ni | Mo | £m b Mpa | £m 0.2Mpa | £_ % |
0.03 | 0.65 | 1.0~2.5 | 18.5~20.5 | 13.0~15.0 | 3.0~4.0 | 550 | 350 | 25 |