50CrVa CHEMICAL COMPOSITION:
(C):0.46-0.54 , (Si):0.17-0.37, (Mn):0.50-0.80, (S):≤0.030,
(P)≤0.030, (Cr)0.80-1.10, (Ni):≤0.35, (Cu):≤0.25,(V):
STANDARD:
GB/T 5128
ASTM A401(M)
ASTM A231(M)
ASTM A877(M)