N4 N6是纯镍牌号
纯镍牌号 |
Ni+Co |
Cu |
Si |
Mn |
C |
Mg |
S |
Fe |
杂质 |
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不小于 |
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N2 |
99.98 |
.001 |
.003 |
.002 |
.005 |
.003 |
.001 |
.007 |
.02 |
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N4 |
99.9 |
.015 |
.03 |
.002 |
.01 |
.01 |
.001 |
.04 |
.1 |
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N6 |
99.5 |
.06 |
.10 |
.05 |
.10 |
.10 |
.005 |
.10 |
.5 |
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N8 |
99.0 |
.15 |
.15 |
.20 |
.20 |
.10 |
.015 |
.30 |
1.0 |
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DN |
99.35 |
.06 |
.02-.10 |
.05 |
.02-.10 |
.02-.10 |
.005 |
.10 |
.35 |
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NY1 |
99.7 |
.1 |
.10 |
- |
.02 |
.10 |
.005 |
.10 |
.3 |
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NY2 |
99.4 |
.01-.10 |
.10 |
- |
- |
- |
.002-.01 |
.10 |
.6 |
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NY3 |
99.0 |
.15 |
.2 |
- |
.1 |
.10 |
.005 |
.25 |
1.0 |
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NMg0.1 |
99.6 |
.05 |
.02 |
.05 |
.05 |
.07-.15 |
.005 |
.07 |
.40 |
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NSi0.19 |
99.4 |
.05 |
.15-.25 |
.05 |
.10 |
.05 |
.005 |
.07 |
.50 |
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纯镍的耐腐蚀性能 |
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特别能耐碱的腐蚀,不论在高温或熔融的碱中都比较稳定,所以主要用于制碱工业。在常温下,镍在海水和盐类溶液及有机介质(如脂肪酸、酚、醇等)中极为稳定。不耐无机酸腐蚀,在醋酸和蚁酸中也不稳定。 |