440A淬火硬化性能优良、硬度高，较440B钢和40C钢有高的韧性。440B用于刃具、量具和轴承.较440A钢硬度高，较440C钢韧性高。用于刃具、阀门,440C具有所有不锈钢、耐热钢中zui高的硬度。用于喷嘴、轴承.440F:是提高440C钢的易切性能的钢种。用于自动车床.敝司经销有:日本,美国,德国,韩国,南非等国不锈钢:SUS301,301L,301J1,SUS302,302B,SUS303,303Se,SUS304,304L,304J1,304J2,304N1,304N2,304LN,SUS305,SUS309,309S,SUS310,310S,SUS315,315J1,315J2,SUS316,316L,316N,316LN,316Ti,316J1,316J1L,SUS317,317L,317LN,317J1,317J2,317J3L,SUS836L,SUS890L,SUS321,321Ti,SUS347,SUS XM7,SUS XM15J1,SUS329J1等奥氏体不锈钢板.棒.卷.角.管.条.角材，SUS405,SUS410L,SUS429,SUS430,,430L,430F,430LX,430J1L,430FMO,SUS434,SUS436,436L,436J1L,SUS443,SUS444,SUS445J1,445J2,SUS447J1,SUS XM27等铁素体不锈钢板.棒.卷.管.材,SUS403,SUS410,410S,SUS420,420C,420J1,420J2,SUS429J1,SUS440,440A,440B,440C,440F等马氏体不锈钢板.棒.卷.角.管.条.角材，敞司一贯坚持如下理念:质量上严苛要求,在价格上放底利润,在服务上力求更好,在交货上更加及时.