Brass Copper Castings India
C97600 Nickel Silver Bronze


Copper Alloy No. C97600
Nickel Silver CDA 976 , Dairy Metal , 20% Leaded Nickel Silver ASTM B 505 , ASTM B 271
Chemical Composition % by weight
Element Nominal Minimum Maximum
Aluminum - - .005
Antimony - - .25
Copper 65 63 67
Iron - - 1.5
Lead 4 3 5
Manganese - - 1
Nickel 20.3 19 21.5
Phosphorus - - .05
Silicon - - .15
Sulfur - - .08
Tin 4 3.5 4.5
Zinc 6 3 9

Applications for Castings

Marine castings, sanitary fittings, ornamental hardware, valves and pumps. 

Mechanical Properties

Typical for 3" dia. continuous cast bar

Hardness* Brinell Hardness (500 kg load) 80
Tensile Strength** KSI 45
Yield Strength ** KSI (0.5% Ext. under load) 24
Elongation** % in 2 inch 20

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 13
Specific Heat BTU/lb/ºF @ 68F .09
Thermal Expansion Per °F from 68 F to 572 F .0000093
Density lb/cu in @ 68 F .321
Electrical Conductivity* (Annealed) % IACS @ 68 F 5
Modulus of Elasticity KSI 19,000

*Volume basis

Fabrication Practices

Stress relieving temperature 500 F or 260 C
Time at temperature 1 hour per inch of section thickness
Responds to heat treatment No
Machinability rating (Free Cutting Brass=100) 70
Suitability for being joined by: Soldering/Excellent
Brazing/Excellent
Oxyacetylene Welding/Not Recommended
Carbon Arc Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Not Recommended