40Crnimoa2011-8-17
alloy structural steel：40CrNiMoA
standard：GB/T 3077-1988
●Chemical composition：
碳 C ：0.37～0.44
硅 Si：0.17～0.37
锰 Mn：0.50～0.80
硫 S ：allow remains...
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12Cr1mov2011-8-17
alloy structural steel 12Cr1MoV
standard ：GB/T 3077-1988
●features and use scope ：
It is used to high pressure ,over-high pressure ,superheater of precritical...
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