Carbon C: 0.34 
 Si: 0.25 to 0.30 
 Mn Mn: 0.5 
 Mo Mo: 0.2 
 Cr: 1.5 
 Ni: 1.55 


 Material quenched, the hardness of 36 ~ 40 HRC, tensile strength the σb for 1 100 MPa, elongation δ is 12% of impact toughness values ??ακ as 8kg/cm2 heat treatment: the 34CrNiMo its quenching and tempering process at 850 oil quenched 580 degree tempered.