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| ºñ¶È£¨mm£© | C | P | Mn | Si | S | Cr | Mo | B | CE(¢òW) | CET | |
| 5-<16 | Max. | 0.18 | 0.025 | 1.5 | 0.25 | 0.008 | 0.25 | 0.25 | 0.002 | 0.40 | 0.29 |
| ≥16-80 | Max. | 0.20 | 0.025 | 1.5 | 0.25 | 0.008 | 0.30 | 0.25 | 0.002 | 0.50 | 0.35 |
| ÐÔÄÜ | ±ê×¼ | µä·¶Ö¸±ê |
| 0.2%Çü·þÇ¿¶È | 690MPa(min) | 750MPa |
| ÀÉìÇ¿¶È | 790-930MPa | 830MPa |
| ÑÓÉìÂÊ£¬£¬£¬£¬50mm G.L. | 18%(min) | 26% |
| -20¡æ×ÝÏòÏıȹ¥»÷ | 40J(min) | 160J |
| Ó²¶È | 255HB |
| ÐÔÄÜ | ±ê×¼ | µä·¶Ö¸±ê |
| 0.2%Çü·þÇ¿¶È | 690MPa(min) | 750MPa |
| ÀÉìÇ¿¶È | 790-930MPa | 830MPa |
| ÑÓÉìÂÊ£¬£¬£¬£¬50mm G.L. | 18%(min) | 26% |
| -20¡æ×ÝÏòÏıȹ¥»÷ | 40J(min) | 160J |
| Ó²¶È | 255HB |
| ºñ¶È£¨mm£© | C | P | Mn | Si | S | Cr | Mo | B | CE(¢òW) | CET | |
| 5-<16 | Max. | 0.18 | 0.025 | 1.5 | 0.25 | 0.008 | 0.25 | 0.25 | 0.002 | 0.40 | 0.29 |
| ≥16-80 | Max. | 0.20 | 0.025 | 1.5 | 0.25 | 0.008 | 0.30 | 0.25 | 0.002 | 0.50 | 0.35 |