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产品说明
牌号:80Cr20Si2Ni 标准:GB/T 1221-1992 ●特性及适用范围: 用作耐磨性为主的吸气、排气阀、阀座等。 ●交货状态:一般以热处理规范状态交货,其热处理种类在合同中注明;未注明者,按不热处理状态交货。 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 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。 产品参数
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