C87400 Silicon bronze +silicon brass B 584
(CENT, INVEST, SAND)
Copper Alloy UNS Number.：C87400
Previous Designation：B 198-13A
Commercial Designation: silicon brass
Chemical Requirements（Composition，% Max Except as Indicated）
Major Elements：
Copper：79.0 min
Lead: 1.0
Zinc: 12.0~16.0
Aluminum ：0.80
Silicon：2.5~4.0
Mechanical Requirements
Tensile Strength,min
ksiᴮ: 50
MPaᶜ: 345
Yield Strength,ᴬ min
ksiᴮ: 21
MPaᶜ: 145
Elongation in 2 in.or 50 mm, min, %:18
Keywords
copper alloy castings; copper-base alloy castings; sand castings