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    ??ǰλ?ã???ҳ > ??????Ѷ > ??˾???? >

    ?ɶ?Q345D?޷?ֹ?????????

    ???ߣ?????޷?ֹܳ? ??Դ??δ֪ ???ڣ?2020-03-05 10:37

    ?ɶ?Q345D?޷?ֹܵ?????Ӧ??????345Mpa??Ϊ?ͺϽ??޷?ֹܡ?
    Q345D?޷?ֹ?չʾ

    1 ?ƺű?ʾ????
    ?ֵ??ƺ??ɴ???????ǿ?ȵĺ???ƴ????ĸ??????ǿ????ֵ???????ȼ???????????????ɣ????磺
    Q345D?????У?
    Q—?ֵ?????ǿ?ȵ?“??”?ֺ???ƴ????λ??ĸ??
    345—????ǿ????ֵ????λMPa??
    D—?????ȼ?ΪD?????ȼ???ΪA,B,C,D,E????
    2 ִ?б?׼??GB/T8163-2018??GB/T6479-2013??
    3 ??ѧ?ɷ֣?
    C??≤0.18??Si??≤0.50??Mn??≤1.70??P??≤0.030??S??≤0.025??Nb??≤0.07??V??≤0.15??Ti??≤0.20??Cr??≤0.30??Ni??≤0.50??Cu??≤0.30??N??≤0.012??Mo??≤0.10??Als??≥0.015??
    4 ??ѧ????
    ??????≤16mm??≥345??16—40mm??≥335??40—63mm??≥325??63—80mm??≥315??
    80—100mm??≥305??100—150mm??≥285??150—200mm??≥275??200—250??≥275??
    250—400??≥265??
    ????ǿ?ȣ?450—630??
    ?쳤?ʣ?≥21??
    ??????飺-20?棺≥34??
    5 ұ??????
    ????ת¯???¯ұ??????Ҫʱ??¯?⾫????
    6 ????״̬
    ?ɶ?Q345D?޷?ֹ???????????????????????+?ػ??Ȼ?е???ƣ?TMCP??״̬??????
    ?༭
    Q345D???ҹ????õĵͺϽ??ġ??͵¹???S355J2????????ASTM A529MGr50 ??ͬһ???𣬻?ѧ?ɷ????в??죬??е??????ͬ??
    ??????Ľ????????£??͵¹???S355J2G3????ͬ,??????S355J2G4???????ϼ???һ?????????滻ʹ?á?
    ????????QQ?ռ?????΢????Ѷ΢????????΢??

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