... -ASTM 5130, JIS SCr430, DIN 28Cr4(1.7030), GB 30Cr(A/E)1. Relable leader in Special Steel products2. Competitive price3 ... .50-0.800.80-1.1. 2. Hardness ValueIn early 2004, Wanbao special steel has established QMS according to ISO9000, made ... -ASTM 5130, JIS SCr430, DIN 28Cr4(1.7030), GB 30Cr(A/E)