??????????????????2738??3Cr2MnNiMo????718????????￡???p20??%??Ni?á???????????????????????????????????????????

????h13??????????????:????h13(aisi)???skd61(jis)???dac(????)???dha1(???)?????8407(assab),?1?x40crmov5-1??1.2344(w-nr.)???bh13(bs).

???????%

?????淶??gb/t1299-2000 c??0.32/0.45 mn??0.20/0.50 si??0.80/1.20 cr??4.75/5.50 p????0.030 s????0.030 mo??1.10/1.75 v??0.80/1.20

?????????????

??????????????hbs??235,???????3.95mm.

?????????????????????????????????????????й??????????????? ,600oc???????????????????????????????????С??????廯?????￡????????????????仯??С?????????????С?????????????????Ч?????????????????????????У??????????????ˉ??????????????????.

???????÷?Χ??4cr5mosiv1??h13?????????????????о??????????????????????????????????????豸????????????????????????????????????????.

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