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QT400-18-LT产品硬度范围
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2020-08-31 15:28
QT400-18-LT产品Si含量较低,请问有谁知道这种材料硬度范围要求?
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1楼
2020-08-31 15:28
楼上的说的很对
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2楼
2020-08-31 15:28
400-18,一般都是125-175HB
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