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    高鎳球墨鑄鐵
    ASTM A439/A439M-2018

高鎳球墨鑄鐵

ASTM A439/A439M-2018
高鎳鑄鐵產品具有好的耐腐蝕性、耐熱性、耐磨性、組織穩定性、熱膨脹性、及無磁性等特點??芍圃旄鞣N形狀的機械產品零件,廣泛應用于閘閥的閥桿螺母、蝶閥的軸套,海水淡化閥門的殼體、石油計量泵的軸承座、汽車發動機等重要機械零部件。

牌號D-2D-2BD-2CD-3D-3AD-4D-5D-5BD-5S
化學成份(%)C總≤3.00≤3.00≤2.90≤2.60≤2.60≤2.60≤2.40≤2.40≤2.30
化學成份(%)Si1.50~3.001.50~3.001.00~3.001.00~2.801.00~2.805.00~6.001.00~2.801.00~2.804.90~5.30
化學成份(%)Mn0.70~1.250.70~1.251.80~2.40≤1.00≤1.00≤1.00≤1.00≤1.00≤1.00
化學成份(%)P≤0.08≤0.08≤0.08≤0.08≤0.08≤0.08≤0.08≤0.08≤0.08
化學成份(%)Ni18.00~22.0018.00~22.0021.00~24.0028.00~32.0028.00~32.0028.00~32.0034.00~36.0034.00~36.0034.00~37.00
化學成份(%)Cr1.75~2.752.75~4.00≤0.502.50~3.501.00~1.504.50~5.50≤0.102.00~3.001.75~2.25
抗拉強度(Mpa)≥400≥400≥400≥380≥380≥415≥380≥380≥380
屈服強度(Mpa)≥210≥210≥195≥210≥210- - - -≥210≥210≥210
伸長率(%)≥8≥7≥20≥6≥10- - - -≥20≥6≥10
硬度 (HB)139~202148~211121~171139~202131~193202~273131~185139~193131~193


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