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質量等級 | 化學元素含量(%) | ||||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | AL | Ti | |
200 | ≤0.15 | ≤0.35 | 0.60~1.70 | ≤0.30 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.40 | ≤0.10 | ≤0.100 | ≤0.040 |
250 | ≤0.22 | ≤0.55 | 0.70~1.70 | ≤0.40 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.40 | ≤0.10 | ≤0.100 | ≤0.040 |
300 | ≤0.22 | ≤0.55 | 0.70~1.70 | ≤0.40 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.40 | ≤0.10 | ≤0.100 | ≤0.040 |
350 | ≤0.22 | ≤0.55 | 0.70~1.70 | ≤0.40 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.40 | ≤0.35 | ≤0.100 | ≤0.040 |
400 | ≤0.22 | ≤0.55 | 0.70~1.70 | ≤0.40 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.40 | ≤0.35 | ≤0.100 | ≤0.040 |
450 | ≤0.22 | ≤0.55 | 0.80~1.70 | ≤0.40 | ≤0.30 | ≤0.25 | ≤0.50 | ≤0.60 | ≤0.35 | ≤0.100 | ≤0.040 |
WR350 | ≤0.14 | ≤0.15 | 0.75~1.70 | ≤0.160 | ≤0.30 | 0.35~1.05 | ≤0.55 | 0.15~0.50 | ≤0.10 | ≤0.100 | ≤0.040 |
質量等級 | 屈服強度 | 抗拉強度 | 伸長率 | ||||||
厚度(mm) | |||||||||
≤8 | >8≤12 | >12≤20 | >20≤32 | >32≤50 | >50≤80 | >80≤150 | 300 | 24 | |
200 | 200 | 200 | - | - | - | - | - | 300 | 24 |
250 | 280 | 260 | 250 | 250 | 250 | 240 | 230 | 410 | 22 |
21300 | 320 | 310 | 300 | 280 | 280 | 270 | 260 | 430 | 21 |
350 | 360 | 360 | 350 | 340 | 340 | 340 | 330 | 450 | 20 |
400 | 400 | 380 | 360 | 360 | 360 | 360 | 480 | 18 | |
450 | 450 | 450 | 420 | 400 | - | - | 520 500 | 16 18 | |
WR350 | 340 | 340 | 340 | 340 | - | - | 450 | 20 |