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80cr20si2ni不銹鋼

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產品編號 80cr20si2ni不銹鋼
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介紹


牌號:80Cr20Si2Ni 標準:GB/T 1221-1992
●特性及適用范圍: 用作耐磨性為主的吸氣、排氣閥、閥座等。
●交貨狀態:一般以熱處理規范狀態交貨,其熱處理種類在合同中注明;未注明者,按不熱處理狀態交貨。

化學成分


碳 C :0.75~0.85
硅 Si:1.75~2.25
錳 Mn:0.20~0.60
硫 S :≤0.030
磷 P :≤0.030
鉻 Cr:19.00~20.50
鎳 Ni:1.15~1.65

力學性能


抗拉強度 σb (MPa):淬火回火,≥885
條件屈服強度 σ0.2 (MPa):淬火回火,≥685
伸長率 δ5 (%):淬火回火,≥10
斷面收縮率 ψ (%):淬火回火,≥15
沖擊功 Akv (J):淬火回火,≥8
硬度 :退火,≤321HB;淬火回火,≥262HB

熱處理工藝


熱處理規范:1)退火,800~900℃緩冷或約720℃空冷;2)淬火,1030~1080℃油冷;3)回火,100~800℃快冷。 金相組織:組織特征為馬氏體型。


80cr20si2ni不銹鋼規格:圓棒規格直徑6mm-350mm,板材規格厚0.1mm-300mm均有現貨
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