SCM418合金鋼
SCM418材料,SCM418圓棒,SCM418價格
SCM418性能,SCM418用途,SCM418鋼材
佳洲金屬直銷SCM418合金鋼機械性能
 
SCM418
執行標準
中國GB/T3203-1982
日本JISG4053:2003
美國ASTMA534:2004
國際ISO683-17:1999
 
SCM418化學成份
碳C:0.17~0.24
硅Si:0.17~0.37
錳Mn:0.40~0.70
硫S:答應殘余含量≤0.035
磷P:答應殘余含量≤0.035
鉻Cr:0.80~1.10
鎳Ni:答應殘余含量≤0.030
銅Cu:答應殘余含量≤0.030
鉬Mo:0.15~0.25
 
SCM418力學性能
抗拉強度σb(MPa):≥885(90)
屈服強度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
試樣尺寸:試樣毛坯尺寸為15mm
熱處理規范及金相組織
熱處理規范:淬火880℃,水冷、油冷回火500℃,水冷、油冷。
交貨狀態
以熱處理(正火、退火或高溫回火)或不熱處理狀態交貨,交貨狀態應在合同中注明。
 
熱處理工藝退火annealingNo.1"760±10℃退火,爐冷至400℃空冷。
HB220-230
正火normalizeNo.4860±10℃正火,出爐空冷。
調質quenching+temperingNo.5840±10℃淬水或油(視產品型狀復雜程度),680-700度回火。   HB<217
調質quenching+temperingNo.6840±10℃淬油,再470度回火處理。HRC41-45
調質quenching+temperingNo.7840±10℃淬油,再480度回火處理。HRC35-45
調質quenching+temperingNo.8850℃淬油,再510度回火處理。HRC38-42
調質quenching+temperingNo.9850℃淬油,再500度回火處理。HRC40-43
調質quenching+temperingNo.10850℃淬油,再510℃回火處理。HRC36-42
調質quenching+temperingNo.11850℃淬油,再560℃回火處理。HRC32-36
 
 合金結構鋼1330H1335H1340H1345H4027H4028H4032H4037H4042H4047H4118H4130H4135H4137H4140H4142H4145H4147H4150H4161H4320H4340H4340H4419H4620H4621H4626H4718H4720H4815H4817H4720H50B40H50B44H5046H50B46H50B50H50B60H5120H5130H5132H5135H5140H5145H5147H5150H5155H5160H51B60H6118H6150H81B45H8617H8620H8622H8625H8627H8630H86B30H8637H8640H8642H8645H86B45H8650H8655H8660H8720H8740H8822H9260H9310H94B15H94B17H94B30H1038H1045H1522H1524H1526H1541H15B21H15B35H15B37H15B41H15B48H15B62HSMn420,SMn433,SMn438,SMn443,SCr415,SCr420,SCr430,SCr440,SCr445,SCM415,SCM418,SCM420,SCM421,SCM425,SCM430,SCM432,SCM435,SCM440,SCM445,SCM822,SNC236,SNC415,SNC631,SNC815,SNC836,SNCM220,SNCM415,SNCM420,SNCM431,SNCM439,SNCM447,SNCM616,SNCM625,SNCM630,SNCM815,SACM645