材料品牌編號：31NICR14標(biāo)準(zhǔn)：DIN Steel套件：結(jié)構(gòu)鋼化學(xué)成分（％）C0.2700-0.3500MN0.8000p≤0.0350s≤0.1500-0.5500 -0.5500 -0.9500 -3.2500-3.7500-3.7500-3.7500-3.7500-3.7500

●化學(xué)成份

碳?C?：0.27～0.33
硅?Si：0.17～0.37
錳?Mn：0.30～0.60
硫?S?：允許殘余含量≤0.035
磷?P?：允許殘余含量≤0.035
鉻?Cr：0.60～0.90
鎳?Ni：2.75～3.15
銅?Cu：允許殘余含量≤0.030截面尺寸：
直徑D/mm:100-300
壁厚:s/mm?:50-150

?

●力學(xué)性能

抗拉強(qiáng)度?σb?(MPa)：≥980(100)
屈服強(qiáng)度?σs?(MPa)：≥785(80)
伸長率?δ5?(%)：≥9
斷面收縮率?ψ?(%)：≥45
沖擊功?Akv?(J)：≥63
沖擊韌性值?αkv?(J/cm2)：≥78(8)
硬度?：≥241HB
試樣尺寸：試樣毛坯尺寸為25mm
熱處理工藝

?

●熱處理規(guī)范及金相組織：
熱處理規(guī)范：淬火820℃,油冷;回火500℃,水冷、油冷

●化學(xué)成份

碳?C?：0.27～0.33
硅?Si：0.17～0.37
錳?Mn：0.30～0.60
硫?S?：允許殘余含量≤0.035
磷?P?：允許殘余含量≤0.035
鉻?Cr：0.60～0.90
鎳?Ni：2.75～3.15
銅?Cu：允許殘余含量≤0.030截面尺寸：
直徑D/mm:100-300
壁厚:s/mm?:50-150

?

●力學(xué)性能

抗拉強(qiáng)度?σb?(MPa)：≥980(100)
屈服強(qiáng)度?σs?(MPa)：≥785(80)
伸長率?δ5?(%)：≥9
斷面收縮率?ψ?(%)：≥45
沖擊功?Akv?(J)：≥63
沖擊韌性值?αkv?(J/cm2)：≥78(8)
硬度?：≥241HB
試樣尺寸：試樣毛坯尺寸為25mm
熱處理工藝

?

●熱處理規(guī)范及金相組織：
熱處理規(guī)范：淬火820℃,油冷;回火500℃,水冷、油冷。

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