(金属成分化学分析)钢铁化学成分允许差参考表(1/4)
所列钢铁分析允许误差范围系根据国家标准及有关文件规定进行整理的,仅供参考。
元素
|
含量范围(%)
|
允许差(%)
|
元素
|
含量范围(%)
|
允许差(%)
|
碳
|
>0.0050~0.0100
|
0.0015
|
硅
|
>0.250~0.5000
|
0.023
|
>0.0100~0.0250
|
0.0025
|
>0.500~1.000
|
0.035
|
>0.0250~0.0500
|
0.0050
|
>1.00~2.50
|
0.05
|
>0.0500~0.100
|
0.010
|
>2.50~4.00
|
0.06
|
>0.100~0.250
|
0.015
|
>4.00
|
0.07
|
>0.250~0.500
|
0.020
|
锰
|
≤0.0250
|
0.0025
|
>0.500~1.000
|
0.0250
|
>0.0250~0.050
|
0.005
|
>1.000~2.000
|
0.035
|
>0.050~0.100
|
0.010
|
>2.000~3.000
|
0.045
|
>0.100~0.200
|
0.015
|
>3.000~4.00
|
0.050
|
>0.200~0.500
|
0.20
|
>4.00
|
0.072
|
>0.500~1.000
|
0.025
|
硫
|
>0.001~0.0025
|
0.0003
|
>1.00~2.00
|
0.030
|
>0.0025~0.0050
|
0.0005
|
>2.00~5.00
|
0.050
|
>0.0050~0.010
|
0.001
|
>5.00~10.00
|
0.10
|
>0.010~0.020
|
0.002
|
>10.00~20.00
|
0.14
|
>0.020~0.0500
|
0.004
|
铬
|
>0.025~0.050
|
0.006
|
>0.050~0.100
|
0.006
|
>0.050~0.100
|
0.008
|
>0.100~0.200
|
0.010
|
>0.10~0.25
|
0.015
|
>0.20
|
0.015
|
>0.25~0.50
|
0.020
|
磷
|
≤0.0025
|
0.0003
|
>0.50~1.00
|
0.030
|
>0.0025~0.0050
|
0.0005
|
>1.00~5.00
|
0.05
|
>0.0050~0.0100
|
0.0010
|
>5.00~10.00
|
0.10
|
>0.0100~0.0300
|
0.0025
|
>10.00~14.00
|
0.12
|
>0.0300~0.100
|
0.004
|
>14.00~18.00
|
0.15
|
>0.100~0.200
|
0.008
|
>18.00~30.00
|
0.17
|
>0.200~0.400
|
0.010
|
|
|
>0.400~1.00
|
0.20
|
|
|
>1.00
|
0.30
|
|
|
(金属成分化学分析)钢铁化学成分允许参考表(2/4)
元素
|
含量范围(%)
|
允许差(%)
|
元素
|
含量范围(%)
|
允许差(%)
|
镍
|
≤0.025
|
0.0025
|
钼
|
≤0.0250
|
0.0015
|
>0.025~0.050
|
0.004
|
>0.025~0.050
|
0.005
|
>0.050~0.100
|
0.007
|
>0.050~0.100
|
0.010
|
>0.100~0.250
|
0.010
|
>0.100~0.500
|
0.020
|
>0.250~0.500
|
0.020
|
>0.500~1.000
|
0.025
|
>0.50~1.000
|
0.025
|
>1.00~2.00
|
0.04
|
>1.00~2.00
|
0.03
|
>2.00~4.00
|
0.05
|
>2.00~4.00
|
0.04
|
>4.00~6.00
|
0.08
|
>4.00~8.00
|
0.08
|
>6.00~9.00
|
0.12
|
>8.00~15.00
|
0.10
|
>9.00~12.00
|
0.15
|
>15.00~30.00
|
0.15
|
铝
|
>0.010~0.030
|
0.003
|
>30.00~40.00
|
0.20
|
>0.030~0.050
|
0.05
|
铜
|
≤0.025
|
0.002
|
>0.050~0.100
|
0.010
|
>0.025~0.250
|
0.003
|
>0.10~0. 50
|
0.02
|
>0.050~0.100
|
0.005
|
>0.50~1.00
|
0.03
|
>0.100~0.250
|
0.015
|
>1.00~2.00
|
0.04
|
>0.250~0.500
|
0.020
|
>2.00~5.00
|
0.06
|
>0.500~1.00
|
0.03
|
>5.00~10.00
|
0.10
|
>1.00~3.00
|
0.05
|
钛
|
≤0.025
|
0.0025
|
>3.00~6.00
|
0.06
|
>0.025~0.050
|
0.005
|
>6.00~10.00
|
0.07
|
>0.050~0.10
|
0.010
|
钨
|
>0.05~0.10
|
0.02
|
>0.10~0.50
|
0.02
|
>0.10~0.50
|
0.03
|
>0.50~1.00
|
0.03
|
>0.50~1.00
|
0.04
|
>1.00~2.00
|
0.05
|
>1.00~1.50
|
0.05
|
>2.00~4.00
|
0.07
|
>1.50~3.00
|
0.06
|
|
|
>3.00~5.00
|
0.07
|
|
|
>5.00~8.00
|
0.09
|
|
|
>8.00~15.00
|
0.11
|
|
|
>15.00
|
0.13
|
|
|
(金属成分化学分析)钢铁化学成分允许参考表(3/4)
元素
|
含量范围(%)
|
允许差(%)
|
元素
|
含量范围(%)
|
允许差(%)
|
钒
|
>0.01~0.050
|
0.005
|
锆
|
≤0.0050
|
0.0005
|
>0.05~0.10
|
0.010
|
>0.0050~0.0100
|
0.0010
|
>0.10~0.25
|
0.015
|
>0.0100~0.0250
|
0.0025
|
>0.25~0.50
|
0.02
|
>0.025~0.050
|
0.005
|
>0.50~1.00
|
0.03
|
>0.050~0.100
|
0.010
|
>1.00~2.00
|
0.04
|
>0.100~0.200
|
0.015
|
>2.00~3.00
|
0.05
|
>0.200~0.30
|
0.02
|
钴
|
≤0.010
|
0.0010
|
硼
|
>0.0005~0.0010
|
0.00030
|
>0.010~0.025
|
0.0025
|
>0.0010~0.0050
|
0.0005
|
>0.025~0.050
|
0.005
|
>0.0050~0.010
|
0.001
|
>0.050~0.10
|
0.01
|
>1.00~2.00
|
0.10
|
>0.10~0.50
|
0.02
|
氮
|
>0.0020~0.100
|
0.0008
|
>0.50~1.00
|
0.03
|
>0.0100~0.0200
|
0.0010
|
>1.00~3.00
|
0.04
|
>0.020~0.100
|
0.005
|
>3.00~5.00
|
0.06
|
>0.10~0.20
|
0.01
|
>5.00~10.00
|
0.08
|
>0.20~0.40
|
0.02
|
>10.00~15.00
|
0.12
|
钼
|
>0.005~0.010
|
0.001
|
>15.00~20.00
|
0.15
|
>0.010~0.030
|
0.002
|
稀
土
|
≤0.010
|
0.0015
|
>0.030~0.050
|
0.004
|
>0.010~0.0250
|
0.0025
|
锡
|
>0.0040~0.0100
|
0.0015
|
>0.025~0.050
|
0.005
|
>0.0100~0.0250
|
0.0025
|
>0.050~0.100
|
0.010
|
>0.025~0.050
|
0.005
|
>0.100~0.200
|
0.015
|
>0.050~0.100
|
0.010
|
铌
|
>0.0100~0.0250
|
0.0025
|
>0.100~0.20
|
0.02
|
>0.025~0.050
|
0.0050
|
>0.20~0.40
|
0.03
|
>0.050~0.100
|
0.010
|
|
|
|
>0.100~0.250
|
0.025
|
|
|
>0.250~0.500
|
0.035
|
|
|
>0.500~1.000
|
0.045
|
|
|
>1.00~3.00
|
0.05
|
|
|
>3.00~5.00
|
0.07
|
|
|
(金属成分化学分析)钢铁化学成分允许参考表(4/4)
元素
|
含量范围(%)
|
允许差(%)
|
元素
|
含量范围(%)
|
允许差(%)
|
砷
|
>0.0005~0.0025
|
0.003
|
|
|
|
>0.0025~0.0050
|
0.0005
|
|
|
>0.0050~0.0100
|
0.0010
|
|
|
>0.0100~0.0250
|
0.0025
|
|
|
>0.0250~0.0500
|
0.0050
|
|
|
>0.050~0.100
|
0.010
|
|
|
>0.100~0.250
|
0.015
|
|
|
>0.250~0.500
|
0.025
|
|
|
>0.500~1.00
|
0.035
|
|
|
>1.00~3.00
|
0.05
|
|
|
镁
|
>0.010
|
0.002
|
|
|
>0.025~0.050
|
0.004
|
|
|
>0.050~0.100
|
0.006
|
|
|
>0.100~0.20
|
0.01
|
|
|
注:以上允许差仅为保证与判定分析结果的准确度而论,与其他部门不发生任何关系。在平行分析二份或三份以上试样时,所得之分析数据的极差值不超过所载允许差2倍者(即±允许差内),均应认为有效,以求得平均值。用标准试样检验时,结果偏差不得超过所载允许差。
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