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UNS C91700
Category Copper Alloy
Class Cast
Type Tin bronze
Designations United States: UNS C91700

Composition
ElementWeight %
Cu  86.5 
Sn  12 
Ni  1.5 

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) 303 (414)  25  (castings: centrifugal, continuous, investment, permanent mold, sand) 
Yield Strength (Mpa) 152 (221) 
Elongation (%) 16 (16) 
Reduction in Area (%)  
Note: Values in parentheses indicate responses to heat treatment
Hardness (HB500) 85 (106)  25  (as cast) 
Note: Value in parentheses indicates response to heat treatment.
Glossary