元素 | 规定化学成分上限 | 允许偏差 | |
上偏差 | 下偏差 | ||
C | ≤0.25 | 0.02 | 0.02 |
>0.25~0.55 | 0.03 | 0.03 | |
>0.55 | 0.04 | 0.04 | |
Mn | ≤0.80 | 0.03 | 0.03 |
>0.80~1.70 | 0.06 | 0.06 | |
Si | ≤0.37 | 0.03 | 0.03 |
>0.37 | 0.05 | 0.05 | |
S | ≤0.050 | 0.005 | / |
>0.05~0.35 | 0.02 | 0.01 | |
P | ≤0.060 | 0.005 | / |
>0.06~0.15 | 0.01 | 0.01 | |
V | ≤0.20 | 0.02 | 0.01 |
Ti | ≤0.20 | 0.02 | 0.01 |
Nb | 0.015~0.060 | 0.005 | 0.005 |
Cu | ≤0.55 | 0.05 | 0.05 |
Cr | ≤1.50 | 0.05 | 0.05 |
Ni | ≤1.00 | 0.05 | 0.05 |
Pb | 0.15~0.35 | 0.03 | 0.03 |
Al | ≥0.015 | 0.003 | 0.003 |
N | 0.010~0.020 | 0.005 | 0.005 |
Ca | 0.002~0.006 | 0.002 | 0.0005 |
元素 | 规定化学成分上限 | 允许偏差 | |
上偏差 | 下偏差 | ||
C | ≤0.30 | 0.01 | 0.01 |
>0.30~0.75 | 0.02 | 0.02 | |
>0.75 | 0.03 | 0.03 | |
Mn | ≤1.00 | 0.03 | 0.03 |
>1.00~2.00 | 0.04 | 0.04 | |
>2.00~3.00 | 0.05 | 0.05 | |
>3.00 | 0.10 | 0.10 | |
Si | ≤0.37 | 0.02 | 0.02 |
>0.37~1.50 | 0.04 | 0.04 | |
>1.50 | 0.05 | 0.05 | |
Ni | ≤1.00 | 0.03 | 0.03 |
>1.00~2.00 | 0.05 | 0.05 | |
>2.00~5.00 | 0.07 | 0.07 | |
>5.00 | 0.10 | 0.10 | |
Cr | ≤0.90 | 0.03 | 0.03 |
>0.90~2.10 | 0.05 | 0.05 | |
>2.10~5.00 | 0.10 | 0.10 | |
>5.00 | 0.15 | 0.15 | |
Mo | ≤0.30 | 0.01 | 0.01 |
>0.30~0.60 | 0.02 | 0.02 | |
>0.60~1.40 | 0.03 | 0.03 | |
>1.40~6.00 | 0.05 | 0.05 | |
>6.00 | 0.10 | 0.10 | |
V | ≤0.10 | 0.01 | / |
>0.10~0.90 | 0.03 | 0.03 | |
>0.90 | 0.05 | 0.05 | |
W | ≤1.00 | 0.04 | 0.04 |
>1.00~4.00 | 0.08 | 0.08 | |
>4.00~10.00 | 0.10 | 0.10 | |
>10.00 | 0.20 | 0.20 | |
Al | ≤0.10 | 0.01 | / |
>0.10~0.70 | 0.03 | 0.03 | |
>0.70~1.50 | 0.05 | 0.05 | |
>1.50 | 0.10 | 0.10 | |
Cu | ≤1.00 | 0.03 | 0.03 |
>1.00 | 0.05 | 0.05 | |
Ti | ≤0.20 | 0.02 | / |
B | 0.0005~0.005 | 0.0005 | 0.0001 |
Co | ≤4.00 | 0.10 | 0.10 |
>4.00 | 0.15 | 0.15 | |
Pb | 0.15~0.35 | 0.03 | 0.03 |
Nb | 0.20~0.35 | 0.02 | 0.01 |
S | ≤0.050 | 0.005 | / |
P | ≤0.050 | 0.005 | / |
元素 | 规定化学成分上限 | 允许偏差 | |
上偏差 | 下偏差 | ||
C | ≤0.010 | 0.002 | 0.002 |
>0.010~0.030 | 0.005 | 0.005 | |
>0.030~0.20 | 0.01 | 0.01 | |
>0.20~0.60 | 0.02 | 0.02 | |
>0.60~1.20 | 0.03 | 0.03 | |
Mn | ≤1.00 | 0.03 | 0.03 |
>1.00~3.00 | 0.04 | 0.04 | |
>3.00~6.00 | 0.05 | 0.05 | |
>6.00~10.00 | 0.06 | 0.06 | |
>10.00~15.00 | 0.10 | 0.10 | |
>15.00~20.00 | 0.15 | 0.15 | |
P | ≤0.040 | 0.005 | / |
>0.040~0.20 | 0.01 | 0.01 | |
S | ≤0.040 | 0.005 | / |
>0.040~0.20 | 0.010 | 0.01 | |
>0.20~0.50 | 0.02 | 0.02 | |
Si | ≤1.00 | 0.05 | 0.05 |
>1.00 | 0.10 | 0.10 | |
Cr | >3.00~10.00 | 0.10 | 0.10 |
>10.00~15.00 | 0.15 | 0.15 | |
>15.00~20.00 | 0.20 | 0.20 | |
>20.00~30.00 | 0.25 | 0.25 | |
Ni | ≤1.00 | 0.03 | 0.03 |
>1.00~5.00 | 0.07 | 0.07 | |
>5.00~10.00 | 0.10 | 0.10 | |
>10.00~20.00 | 0.15 | 0.15 | |
>20.00~30.00 | 0.20 | 0.20 | |
>30.00~40.00 | 0.25 | 0.25 | |
>40.00 | 0.30 | 0.30 | |
Mo | >0.20~0.60 | 0.03 | 0.03 |
>0.60~2.00 | 0.05 | 0.05 | |
>2.00~7.00 | 0.10 | 0.10 | |
>7.00~15.00 | 0.15 | 0.15 | |
>15.00 | 0.20 | 0.20 | |
Ti | ≤1.00 | 0.05 | 0.05 |
>1.00~3.00 | 0.07 | 0.07 | |
>3.00 | 0.10 | 0.10 | |
Co | >0.05~0.50 | 0.01 | 0.01 |
>0.50~2.00 | 0.02 | 0.02 | |
>2.00~5.00 | 0.05 | 0.05 | |
>5.00~10.00 | 0.10 | 0.10 | |
>10.00~15.00 | 0.15 | 0.15 | |
>15.00~22.00 | 0.20 | 0.20 | |
>22.00~30.00 | 0.25 | 0.25 | |
Nb+Ta | ≤1.50 | 0.05 | 0.05 |
>1.50~5.00 | 0.10 | 0.10 | |
>5.00 | 0.15 | 0.15 | |
Ta | ≤0.10 | 0.02 | 0.02 |
Cu | ≤0.50 | 0.03 | 0.03 |
>0.50~1.00 | 0.05 | 0.05 | |
>1.00~3.00 | 0.10 | 0.10 | |
>3.00~5.00 | 0.15 | 0.15 | |
>5.00~10.00 | 0.20 | 0.20 | |
Al | ≤0.15 | 0.01 | 0.005 |
>0.15~0.50 | 0.05 | 0.05 | |
>0.05~2.00 | 0.10 | 0.10 | |
>2.00~5.00 | 0.20 | 0.20 | |
>5.00~10.00 | 0.35 | 0.35 | |
N | ≤0.02 | 0.005 | 0.005 |
>0.02~0.19 | 0.01 | 0.01 | |
>0.19~0.25 | 0.02 | 0.02 | |
>0.25~0.35 | 0.03 | 0.03 | |
>0.35 | 0.04 | 0.04 | |
W | ≤1.00 | 0.03 | 0.03 |
>1.00~2.00 | 0.05 | 0.05 | |
>2.00~5.00 | 0.07 | 0.07 | |
>5.00~10.00 | 0.10 | 0.10 | |
>10.00~20.00 | 0.15 | 0.15 | |
V | ≤0.50 | 0.03 | 0.03 |
>0.50~≤1.50 | 0.05 | 0.05 | |
>1.50 | 0.07 | 0.07 | |
Se | 全部 | 0.03 | 0.03 |