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| C | Si | Mn | P | S | Ni | Mo | Cr | Nb | Alt | |
| ÈÛÁ¶ÆÊÎö | ≤ 0.15 |
0.10-0.50 | 1.00-1.60 | ≤0.020 | ≤0.004 | 0.60-1.00 | 0.20-0.40 | 0.20-0.40 | 0.005-0.020 | ≥0.015 |
| ÖÆÆ·ÆÊÎö | ≤ 0.17 |
0.05-0.56 | 0.95-1.70 | ≤0.025 | ≤0.005 | 0.55-1.05 | 0.15-0.45 | 0.15-0.45 | 0.005-0.025 | ≥0.015 |
| ²úÆ·ºñ¶È Mm |
Çü·þµãReh MPa,min |
¿¹ÀÇ¿¶ÈRm MPa |
ÑÓÉìÂÊ %,min |
¹¥»÷ÖµAKV(0¡æ) J,min |
ÊÒÎÂÍäÇú180° d=3a |
| >100≤125 | 380 | 570¡«740 | 18 | 31 | ÎÞÁÑÎÆ |
| >125≤145 | 375 |
