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UNS C90300
Category Copper Alloy
Class Cast
Type Tin bronze
Designations United States: UNS C90300, ASTM B584

Composition
ElementWeight %
Cu  88 
Sn  8 
Zn  4 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 8.8-8.94 25  
Poisson's Ratio 0.34 25  
Elastic Modulus (GPa) 117 25  
Tensile Strength (Mpa) 310  25  (castings: centrifugal, continuous, investment, plaster, sand) 
Yield Strength (Mpa) 145 
Elongation (%) 30 
Reduction in Area (%)  
Hardness (HB500) 70  25  (as cast) 
Glossary