鋼種 | 牌號 | 用途 | 化學成分 % | 機械性能 | ||||||||||||
C | Mn | P | S | Alt | Ti | 屈服強度Mpa 不小于 | 抗拉強度Mpa 不小于 | 斷后伸長率 % 不小于 | ||||||||
公稱厚度 mm | r值 | n值 | ||||||||||||||
<0.60 | 0.60~<1.0 | 1.0~<1.6 | ≥1.6 | 不小于 | 不小于 |
沖壓用冷連軋鋼板及鋼帶 | BLC | 一般用 | ≤0.10 | ≤0.50 | ≤0.035 | ≤0.025 | ≥0.020 | - | 140~270 | 270 | 36 | 38 | 40 | 42 |
BLD | 沖壓用 | ≤0.08 | ≤0.45 | ≤0.030 | ≤0.025 | ≥0.020 | - | 120~240 | 270 | 38 | 40 | 42 | 44 | |
BUSD | 深沖用 | ≤0.01 | ≤0.40 | ≤0.025 | ≤0.020 | ≥0.015 | ≤0.20 | 120~210 | 260 | 40 | 42 | 44 | 46 | |
BUFD | 特深沖用 | ≤0.008 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 | 120~190 | 250 | 42 | 44 | 46 | 48 | |
BSUFD | 超深沖用 | ≤0.006 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 | 110~180 | 250 | 44 | 46 | 48 | 50 | |
冷連軋碳素結構鋼板及鋼帶 | St37-2G | 結構件 | ≤0.17 | ≤1.00 | ≤0.035 | ≤0.030 | ≥0.020 | 215 | 360~510 | 20 | ||||
St44-3G | 結構件 | ≤0.20 | ≤1.30 | ≤0.035 | ≤0.030 | ≥0.020 | 245 | 430~580 | 18 | |||||
St52-3G | 結構件、加強件 | ≤0.20 | ≤1.60 | ≤0.035 | ≤0.030 | ≥0.020 | 325 | 510~680 | 16 | |||||
加磷高強度冷連軋鋼板及鋼帶 | B170P1 | 沖壓用 | ≤0.006 | ≤1.00 | ≤0.08 | ≤0.025 | ≥0.015 | ≤0.20 | 170~260 | 340 | 36 | 38 | 40 | |
B210P1 | 一般用 | ≤0.008 | ≤1.20 | ≤0.10 | ≤0.025 | ≥0.015 | ≤0.20 | 210~310 | 390 | 32 | 34 | 36 | ||
B250P1 | 結構用 | ≤0.008 | ≤1.20 | ≤0.12 | ≤0.025 | ≥0.015 | ≤0.20 | 250~360 | 440 | 30 | 32 | 34 | ||
B180P2(BP340) | 一般用 | ≤0.08 | ≤0.80 | ≤0.12 | ≤0.025 | ≥0.020 | - | 180~280 | 340 | 30 | ||||
B220P2(BP380) | 結構用 | ≤0.10 | ≤1.00 | ≤0.12 | ≤0.025 | ≥0.020 | - | 220~320 | 380 | 28 | ||||