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钛及钛合金加工产品的化学成分及成分允许偏差(摘自GB/T 3620.2-1994)
注:当铁元素为杂质时,其偏差只取正偏差。
元素 | 化学成分的质量分数(%) | 允许偏差(%) |
---|---|---|
C | ≤0.20 | +0.02 |
C | >0.20~0.50 | +0.04 |
C | >0.50 | +0.06 |
N | ≤0.10 | +0.02 |
H | ≤0.020 | +0.002 |
O | ≤0.20 | +0.03 |
O | >0.20 | +0.04 |
Fe | ≤0.25 | ±0.10 |
Fe | >0.25~0.50 | ±0.15 |
Fe | >0.50~5.00 | ±0.20 |
Fe | >5.00 | ±0.25 |
Si | ≤0.10 | ±0.02 |
Si | >0.10~0.50 | ±0.05 |
Si | >0.50~0.70 | ±0.07 |
Al | ≤1.00 | ±0.15 |
Al | >1.00~10.00 | ±0.40 |
Al | >10.00~35.00 | ±0.50 |
Cr | ≤1.00 | ±0.08 |
Cr | >1.00~4.00 | ±0.20 |
Cr | >4.00 | ±0.25 |
Mo | ≤1.00 | ±0.08 |
Mo | >1.00~10.00 | ±0.30 |
Mo | >10.00~30.00 | ±0.40 |
Sn | ≤3.00 | ±0.15 |
Sn | >3.00~6.00 | ±0.25 |
Sn | >6.00~12.00 | ±0.40 |
Mn | ≤0.30 | ±0.10 |
Mn | >0.30~6.00 | ±0.30 |
Mn | >6.00~9.00 | ±0.40 |
Mn | >9.00~20.00 | ±0.50 |
Cu | ≤1.00 | ±0.08 |
Cu | >1.00~3.00 | ±0.12 |
Cu | >3.00~5.00 | ±0.20 |
V | ≤0.50 | ±0.05 |
V | >0.50~5.00 | ±0.15 |
V | >5.00~6.00 | ±0.20 |
V | >6.00~10.00 | ±0.30 |
V | >10.00~20.00 | ±0.40 |
B | ≤0.005 | ±0.001 |
Zr | ≤4.00 | ±0.15 |
Zr | >4.00~6.00 | ±0.20 |
Zr | >6.00~10.00 | ±0.30 |
Zr | >10.00 | ±0.40 |
Ni | ≤1.00 | ±0.03 |
Pd | ≤0.250 | ±0.02 |
Nb | ≤1.00 | ±0.10 |
Nb | >1.00~5.00 | ±0.15 |
Nb | >5.00~7.00 | ±0.20 |
Nb | >7.00~10.00 | ±0.25 |
Nb | >10.00~15.00 | ±0.30 |
Nb | >15.00~20.00 | ±0.35 |
Nb | >20.00~30.00 | ±0.40 |
其他元素(单一) | ≤0.1 | +0.02 |