Sepcial Hi-Cr I Cast iron ball
C 2.0-2.8 Si 1.0max Cr 22-32 Mn 0.5-2.0 S 0.06max P 0.08max Mo micro Al micro
Sepcial Hi-Cr II Cast iron ball
C 2.0-2.8 Si 1.0max Cr 17-22 Mn 0.5-2.0 S 0.06max P 0.08max Mo micro Al micro
Sepcial Hi-Cr III Cast iron ball
C 2.2-3.2 Si 1.0max Cr 15-17 Mn 0.5-2.0 S 0.06max P 0.08max Mo micro Al micro
High -Cr Cast iron ball
C 2.1-3.2 Si 1.0max Cr 11-14 Mn 0.5-2.0 S 0.06max P 0.08max Mo micro Al micro
Medium-Cr Cast iron ball
C 2.1-3.2 Si 1.2max Cr 5-10 Mn 0.5-2.5 S 0.06max P 0.08max Mo micro Al micro
Low-Cr Cast iron ball
C 2.2-3.5 Si 1.2max Cr 1.5-3.0 Mn 0.5-1.5 S 0.06max P 0.08max Mo micro Al micro
Microstructure: M+C
(M-Martensite, B-Bainitic, C-Carbide)
Roundness: Within the national standard:YB/T 091-2005