C87300 Silicon bronze +silicon brass B 584
(CENT, INVEST, SAND)
Copper Alloy UNS Number.：C87300
Previous Designation：B 198-12A
Commercial Designation: silicon bronze
Chemical Requirements（Composition，% Max Except as Indicated）
Major Elements：
Copper：94.0 min
Tin：0.20
Lead: 0.25
Iron: 0.20
Manganese：0.8~1.5
Silicon：3.6~5.0
Mechanical Requirements
Tensile Strength,min
ksiᴮ: 45
MPaᶜ: 310
Yield Strength,ᴬ min
ksiᴮ: 18
MPaᶜ: 124
Elongation in 2 in.or 50 mm, min, %:20
Keywords
copper alloy castings; copper-base alloy castings; sand castings