鋼種 | 牌號(hào) | 用途 | 化學(xué)成分 % | 機(jī)械性能 | ||||||||||||
C | Mn | P | S | Alt | Ti | 屈服強(qiáng)度Mpa 不小于 | 抗拉強(qiáng)度Mpa 不小于 | 斷后伸長(zhǎng)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 | 1.40 | 0.18 | |
BUSD | 深沖用 | ≤0.01 | ≤0.40 | ≤0.025 | ≤0.020 | ≥0.015 | ≤0.20 | 120~210 | 260 | 40 | 42 | 44 | 46 | 1.60 | 0.20 | |
BUFD | 特深沖用 | ≤0.008 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 | 120~190 | 250 | 42 | 44 | 46 | 48 | 1.80 | 0.21 | |
BSUFD | 超深沖用 | ≤0.006 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 | 110~180 | 250 | 44 | 46 | 48 | 50 | 2.00 | 0.22 | |
冷連軋?zhí)妓亟Y(jié)構(gòu)鋼板及鋼帶 | St37-2G | 結(jié)構(gòu)件 | ≤0.17 | ≤1.00 | ≤0.035 | ≤0.030 | ≥0.020 | 215 | 360~510 | 20 | ||||||
St44-3G | 結(jié)構(gòu)件 | ≤0.20 | ≤1.30 | ≤0.035 | ≤0.030 | ≥0.020 | 245 | 430~580 | 18 | |||||||
St52-3G | 結(jié)構(gòu)件、加強(qiáng)件 | ≤0.20 | ≤1.60 | ≤0.035 | ≤0.030 | ≥0.020 | 325 | 510~680 | 16 | |||||||
加磷高強(qiáng)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 | 1.50 | 0.18 | |
B210P1 | 一般用 | ≤0.008 | ≤1.20 | ≤0.10 | ≤0.025 | ≥0.015 | ≤0.20 | 210~310 | 390 | 32 | 34 | 36 | 1.50 | 0.18 | ||
B250P1 | 結(jié)構(gòu)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(jié)構(gòu)用 | ≤0.10 | ≤1.00 | ≤0.12 | ≤0.025 | ≥0.020 | - | 220~320 | 380 | 28 | ||||||
BH值Mpa | ||||||||||||||||
Nb | 不小于 | |||||||||||||||
烘烤硬化高強(qiáng)度冷連軋鋼板及鋼帶 | B140H1 | 深沖壓用 | ≤0.006 | ≤0.40 | ≤0.04 | ≤0.020 | ≥0.015 | ≤0.10 | 140~230 | 270 | 41 | 30 | 1.60 | 0.20 | ||
B180H1 | 沖壓用 | ≤0.008 | ≤1.00 | ≤0.08 | ≤0.020 | ≥0.015 | ≤0.10 | 180~280 | 340 | 35 | 30 | 1.40 | 0.18 | |||
B180H2(BH340) | 沖壓用 | ≤0.020 | ≤0.40 | ≤0.12 | ≤0.025 | ≥0.020 | - | 180~280 | 340 | 32 | 30 | 1.40 | 0.18 | |||
Si | ||||||||||||||||
雙相高強(qiáng)度冷連軋鋼板及鋼帶 | B240/390DP | 結(jié)構(gòu)件 | ≤0.15 | ≤1.50 | ≤0.035 | ≤0.030 | ≥0.020 | ≤0.40 | 240~380 | 390 | 29 | 31 | 33 | |||
B280/440DP | 結(jié)構(gòu)件、加強(qiáng)件 | ≤0.15 | ≤1.80 | ≤0.035 | ≤0.030 | ≥0.020 | ≤0.50 | 280~420 | 440 | 26 | 28 | 30 | ||||
B340/590DP | 結(jié)構(gòu)件、加強(qiáng)件 | ≤0.18 | ≤2.20 | ≤0.035 | ≤0.030 | ≥0.020 | ≤0.80 | 340~500 | 590 | 16 | 18 | 20 | ||||
B400/780DP | 結(jié)構(gòu)件、防撞件 | ≤0.20 | ≤2.50 | ≤0.035 | ≤0.030 | ≥0.020 | ≤0.80 | 400~590 | 780 | - | 14 | 16 |