45mnb圓鋼 http://www.korantekno.com/45mnb/ zh-cn Rss Generator By SDCMS 1.3(20110129) 45mnb圓鋼 http://www.korantekno.com/45mnb/412.html 45mnb圓鋼 http://www.korantekno.com/45mnb/391.html 45MnB

        45MnB合金結構鋼

        統一數字代號:A71452

 杭州港昌金屬45MNB圓鋼  45MnB【化學成分】(質量分數)(%)

  C:0.42~0.49

  Si:0.17~0.37

  Mn:1.10~1.40

  B:0.0005~0.0035

  45MnB圓鋼力學性能

  試樣毛坯尺寸(mm):25

  熱處理:

  第一次淬...

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