g20crmo軸承鋼標(biāo)準(zhǔn)：GB/T3077-1988特性及適用范圍力學(xué)性能抗拉強(qiáng)度σb(MPa)：≥885(90)屈服強(qiáng)度σs(MPa)：≥685(70)伸長率δ5(%)：≥12斷面收縮率ψ(%)：≥50沖擊功Akv(J)：≥78沖擊韌性值αkv(J/cm2)：≥98(10)硬度：≤197HB試樣毛坯尺寸為：15mm熱處理規(guī)范淬火880℃，水冷、油冷回火500℃，水冷、油冷。化學(xué)成份編輯碳C：0.17～0.23(答應(yīng)偏差:±0.02)矽Si：0.20～0.35(答應(yīng)偏差:±0.03)錳Mn：0.65～0.95(答應(yīng)偏差:±0.04)硫S：≤0.030(答應(yīng)偏差:0.005)磷P：≤0.030(答應(yīng)偏差:0.005)鉻Cr：0.35～0.65(答應(yīng)偏差:±0.15)銅Cu：≤0.25(答應(yīng)偏差：+0.05)鉬Mo：0.08～0.15(答應(yīng)偏差:±0.02)俊峰鋼材====圓鋼詳細(xì)的標(biāo)準(zhǔn)材質(zhì)規(guī)格材質(zhì)規(guī)格8#-10#∮16-29065Mn∮40-30015#∮14-15045Mn2∮18-7520＃∮8-48060Si2Mn∮16-15035?！?-48020CrMnTi∮10-48045?！?.5-48020crmnTiB∮16-75Q235B∮6.5-180GCr15∮16-40040Cr∮8-480ML35∮8-15020Cr∮10-480T8-T13∮8-48042CrMo∮12-480Cr12∮16-30035CrMo∮12-480Cr12MoV∮16-30020CrMo∮12-3003Cr2W8V∮16-30038CrMoAL∮20-30045Cr50Cr∮20-3005CrMnMo∮20-45020CrMnMo∮20-30016Mn（Q345B）∮14-36540Mn2∮28-6050Mn∮40-20035Cr∮5515CrMo∮21∮24∮7515Mn∮32∮17025?！?6-28040CrMnMo∮80-∮160YF45MnV∮28-8020CrMnMo∮20-30030?！?.5-48027SiMn∮20-35030Crmo∮28Crwmn∮20-30030CrmnTi∮16-300H13(4Cr5MoSiVi)∮20-30060＃∮210.∮26040crNimo∮20-400