C92900 Leaded Nickel Tin Bronze
Copper Alloy No. C92900
Leaded Nickel Tin Bronze CDA 929 ASTM B 505
Chemical Composition % by weight
Leaded Nickel Tin Bronze CDA 929 ASTM B 505
Chemical Composition % by weight
| Element | Nominal | Minimum | Maximum |
| Aluminum | - | - | .005 |
| Antimony | - | - | .25 |
| Copper | 84 | 82 | 86 |
| Iron | - | - | .20 |
| Lead | 2.6 | 2 | 3.2 |
| Nickel | 3.4 | 2.8 | 4 |
| Phosphorus | - | - | .50 |
| Silicon | - | - | .005 |
| Sulfur | - | - | .05 |
| Tin | 10 | 9 | 11 |
| Zinc | - | - | .25 |
Applications
Gear, wear plates and guides, cams.
Mechanical Properties
M07 - As Continuous Cast
| Hardness* | Brinell Hardness (500 kg load) | 80 |
| Tensile Strength** | KSI | 45 min |
| Yield Strength ** | KSI (0.5% Ext. under load) | 25 min |
| Elongation** | % in 2 inch | 8 min |
**Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
| Thermal Conductivity | BTU/ (sq ft-ft-hr-F) | 33.6 |
| Specific Heat | BTU/lb/ºF @ 68F | .09 |
| Thermal Expansion | Per °F from 68 F to 392 F | .0000095 |
| Density | lb/cu in @ 68 F | .320 |
| Electrical Conductivity* (Annealed) | % IACS @ 68 F | 9.2 |
| Modulus of Elasticity | KSI | 14,000 |
*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) | 40 |
| 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 |