C92800 Leaded Tin Bronze
Copper Alloy No. C92800
Leaded Tin Bronze CDA 928 ASTM B 505
Chemical Composition % by weight
Leaded Tin Bronze CDA 928 ASTM B 505
Chemical Composition % by weight
Element | Nominal | Minimum | Maximum |
Aluminum | - | - | .005 |
Antimony | - | - | .25 |
Copper | 79 | 78 | 82 |
Iron | - | - | .20 |
Lead | 5 | 4 | 6 |
Nickel | - | - | .50 |
Phosphorus | - | - | .05 |
Silicon | - | - | .005 |
Sulfur | - | - | .05 |
Tin | 16 | 15 | 17 |
Zinc | - | - | .50 |
Applications
Piston rings
Mechanical Properties
M07 - As Continuous Cast
Hardness* | Rockwell B Scales | 80 |
Tensile Strength** | KSI | 40 |
Yield Strength ** | KSI (0.5% Ext. under load) | 30 |
Elongation** | % in 2 inch | 1 |
**Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
Thermal Conductivity | BTU/ (sq ft-ft-hr-F) | N/A |
Specific Heat | BTU/lb/ºF @ 68F | .09 |
Thermal Expansion | Per °F from 68 F to 350 F | N/A |
Density | lb/cu in @ 68 F | N/A |
Electrical Conductivity* (Annealed) | % IACS @ 68 F | N/A |
Modulus of Elasticity | KSI | 16,000 |
*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/Good* | |
Oxyacetylene Welding/Not Recommended | |
Gas Shielded Arc Welding/Not Recommended | |
Coated Metal Arc Welding/Not Recommended |