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TIANJIASHIJIAN:2014-08-31


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序号 1 2
牌号 ER44-G ER55-G TB/T 2374
适用标准/型号 TB/T 2374 HC8MnSICucrNi II TH550-NQ-II
化学成分一例 C 0.07 0.07
Mn 1.13 1.42
Si 0.42 0.47
P 0.013 0.013
S 0.012 0.011
Ni 0.33 0.40
Cr 0.32 0.67
Mo 0.36 0.31
Ti    
V    
AI    
Zr    
熔数金属力学性能一例 抗控制强度Rm(MPa) 522 631
屈服强度Bp0.2(MPa) 421 529
延展率(%) 27 26
冲击功(J) 91[-40℃] 87[-40℃]
保护气体 富氩 富氩

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