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纰� C 锛�0.38锝�0.43
纭� Si锛�0.15锝�0.35
閷� Mn锛�0.60锝�0.80
纭� S 锛氣墹0.040
纾� P 锛氣墹0.035
閴� Cr锛�0.70锝�0.90
閴� Mo锛�0.20锝�0.30
閹� Ni锛�1.65锝�2.00
