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閷� Mn锛�0.45~0.77
纭� S锛氣墹0.025
纾� P锛氣墹0.025
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閹� Ni锛氣墹0.30
閵� Cu锛氣墹0.30
閲� V锛�0.25~0.35
閴� Mo锛�0.50~0.65
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