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8cr20si2ni不锈钢

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产品编号 8cr20si2ni不锈钢
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  • 产品参数

IMG_1146.JPG

化学成分:

碳 C :0.75~0.85

硅 Si:1.75~2.25

锰 Mn:0.20~0.60

硫 S :≤0.030

磷 P :≤0.030

铬 Cr:19.00~20.50

镍 Ni:1.15~1.65

力学性能:

抗拉强度σb (MPa):淬火回火,≥885

条件屈服强度 σ0.2 (MPa):淬火回火,≥685

伸长率 δ5 (%):淬火回火,≥10

断面收缩率 ψ (%):淬火回火,≥15

冲击功 Akv (J):淬火回火,≥8

硬度 :退火,≤321HB;淬火回火,≥262HB

热处理工艺:

热处理规范:1)退火,800~900℃缓冷或约720℃空冷;2)淬火,1030~1080℃油冷;3)回火,100~800℃快冷。 金相组织:组织特征为马氏体型。  

 


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