Tin Bronze Alloy C90700 (SAE 65)
Copper Alloy No. C90700
Tin Bronze Alloy , SAE 65 , CDA 907
ASTM B 505
Chemical Composition % by weight
Tin Bronze Alloy , SAE 65 , CDA 907
ASTM B 505
Chemical Composition % by weight
Element | Nominal | Minimum | Maximum |
Aluminum | - | - | .005 |
Antimony | - | - | .20 |
Copper | 89 | 88 | 90 |
Iron | - | - | .15 |
Lead | - | - | .50 |
Nickel | - | - | .50 |
Phosphorus | - | - | .30 |
Silicon | - | - | .005 |
Sulfur | - | - | .05 |
Tin | 11 | 10 | 12 |
Zinc | - | - | .50 |
Applications
Gears, bearings, bushings.
Mechanical Properties
Typical for 3" dia. continuous cast bar
Hardness* | Brinell Hardness (500 kg load) | 105 |
Tensile Strength** | KSI | 42 |
Yield Strength ** | KSI (0.5% Ext. under load) | 25 |
Elongation** | % in 2 inch | 10 |
**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 | 9.6 |
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) | 20 |
Suitability for being joined by: | Soldering/Excellent |
Brazing/Good* | |
Oxyacetylene Welding/Fair | |
Gas Shielded Arc Welding/Fair | |
Coated Metal Arc Welding/Fair |