Materials Specification - Lead Gunmetal Bronze British standard : BS. 1400 LG2 Japanese Standard : JIS. H5121 CAC406C ( BC 6 ) American standard : ASTM SAE 40 Australian standard : C83600 Applications General purpose bearings, automatic and machine. Hydraulic ram components, crank gears, valve seats, side valves, rock drill parts, etc. Profiles Available Round Bar Hollow Bar Sheet