Brass Copper Castings India
C91100 Tin Bronze


Copper Alloy No. C91100
Tin Bronze
Chemical Composition % by weight
Element Nominal Minimum Maximum
Aluminum - - .005
Antimony - - .20
Copper 84 82 85
Iron - - .25
Lead - - .25
Nickel - - .50
Phosphorus - - 1
Silicon - - .005
Sulfur - - .05
Tin 16 15 17
Zinc - - .25

Applications

Piston rings, bearings, bushings, bridge plates. 

Mechanical Properties

M07 - As Continuous Cast

Hardness* Brinell Hardness (3000 kg load) 135
Tensile Strength** KSI 35
Yield Strength ** KSI (0.5% Ext. under load) 25
Elongation** % in 2 inch 2

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

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 40.8
Specific Heat BTU/lb/ºF @ 68F .09
Thermal Expansion Per °F from 68 F to 392 F .0000102
Density lb/cu in @ 68 F .317
Electrical Conductivity* (Annealed) % IACS @ 68 F 8
Modulus of Elasticity KSI 15,000

*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) 10
Suitability for being joined by: Soldering/Excellent
Brazing/Good*
Oxyacetylene Welding/Fair
Gas Shielded Arc Welding/Fair
Coated Metal Arc Welding/Fair