China Hot selling Steel Round Bar (42CrMo4) shaft collar design

Product Description Scm440 42CrMo4 1.7225 4140 Engineering Mechanical Forged Round Steel Bar1: AISI 4140 steel introductionAISI 4140 is defined as a low alloy steel which has 1% Cr-Mo as strengthening alloy elements.Compared with AISI 4130, it has a higher carbon...