... /32,29/64,31/64,1/2,9/16,5/8,3/4 copper plated steel balls G10 G16 G100 G1000 1/16 ... /32,29/64,31/64,1/2,9/16,5/8,3/4 copper coated steel balls mild steel ball 1. Material: AISI1045 ... .50Max0.07Max0.06MaxHRC 58-62 AISI 10150.13~0.180.10~0.300.30~0.600.04Max********AISI 10450.43~0 ... .500.10~0.300.60~0.900.04Max0.05MaxAISI 10850.83~0 ...