C84800 Leaded semi-red brass B584
(CENT, INVEST, SAND)
Copper Alloy UNS Number.：C84800
Previous Designation：B 145-5B
Commercial Designation: semi-red brass, 76-2½-6½-15
Chemical Requirements（Composition，% Max Except as Indicated）
Major Elements：
Copper：75.0~77.0
Tin：2.0~3.0
Lead:6.5~7.0
Zinc:13.0~17.0
Iron:0.40
Nickelincl.Cobalt:1.0ᴬ
Antimony:0.25
Residual Elements：
Sulfur0.08
Phosphorus0.02
Aluminum0.005
Silicon :0.005
Mechanical Requirements
Tensile Strength,min
ksiᴮ:28
MPaᶜ:193
Yield Strength,ᴬ min
ksiᴮ:12
MPaᶜ:83
Elongation in 2 in.or 50 mm, min, %:16
Keywords
copper alloy castings; copper-base alloy castings; sand castings