Machine Function of 42CrMo

Source :    Publication date: 2014/4/1    Read the number: 2264

Chemical Composition and Machine Function of 42CrMo 1)     The chemical composition of the material： No The chemical composition   % C Si Mn Mo Cr Ni S P Cu 42CrMo 0.38~0.45 0.17~0.37 0.50~0.80 0.15~0.25 0.90~1.2 ≤0.30 ≤0.035 ≤0.035 ≤0.30 (Note: The chemical composition of the other material must obey the standard set by the country, the allowed dispersion of the chemical composition must accord to the provision of GB222 ) 2)     Microstructure Steel No Center osteoporosis General osteoporosis Segregation Subcutaneous bubble Intergranular crack Level is not more than No allow 42CrMo 2.0 2.0 2.0 (Note: Free rough loose center can not) 3)Machine function: Central roued piece of rough mechanical properties Steel No Delivery status Wall thickness Mm Tensile strength σ b MPa Elongation δ 5 % Section shrinkage ψ % 42CrMo Quenched ≤70 785 12 40 Slewing Bearing  Parts:  Isolation Block:      Material  PA1010Resin  Seal Ring:          Material  NBR( nitrile rubber buna)  Steel Ball:          Material  GCr15  Lubrication grease:  No.2 EP grease (GB7324-1994)   http://m.steviamx.com