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纭� Si锛�0.90锝�1.20
閷� Mn锛�1.00锝�1.30
纭� S 锛氣墹0.020
纾� P 锛氣墹0.020
閴� Cr锛�0.90锝�1.20
閹� Ni锛�1.40锝�1.80
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