C93400 / CDA 934 Leaded Tin Bronze Alloys
Specification :
| CDA | ASTM | Asarcon | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|---|
| C934 | B505 B505M |
88 | QQ-C-390, E8; QQ-B-1005, COMP 8 |
MIL-B-11553, COMP 8 |
Chemical Composition :
| Cu%1 | Pb% | Sn% | Zn% | Fe% | P%2 | Ni%3 | Al% | S% | Sb% | Si% | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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Chemical Composition according to ASTM B505/B505M-18
1In determining Cu min., Cu may be calculated as Cu + Ni. 2For continuous castings, P shall be 1.5%, max. 3Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
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| 82.00- 85.00 |
7.00- 9.00 |
7.00- 9.00 |
0.80 | 0.20 | 0.50 | 1.00 | 0.005 | 0.08 | 0.50 | 0.005 | |
Machinability :
| Copper Alloy UNS No. | Machinability Rating | Density (lb/in3 at 68 °F) |
|---|---|---|
| C934 | 70 | 0.32 |
Mechanical Properties :
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Mechanical Properties according to ASTM B505/B505M-18
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| Tensile Strength, min | Yield Strength, at .5% Extension Under Load, min | Elongation, in 2 in. or 50 mm min | Brinell Hardness (500 kg load) | Remarks | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical BHN | ||||||
| 34 | 234 | 20 | 138 | 8 | 60 | ||||||
Physical Properties :
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Physical Properties provided by CDA
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| US Customary | Metric | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Density | 0.32 lb/in3 at 68 °F | 8.86 gm/cm3 at 20 °C | |||||||||
| Specific Gravity | 8.86 | 8.86 | |||||||||
| Electrical Conductivity | 12% IACS at 68 °F | 0.07 MegaSiemens/cm at 20 °C | |||||||||
| Thermal Conductivity | 33.6 Btu · ft/(hr · ft2 · °F) at 68 °F | 58.2 W/m at 20 °C | |||||||||
| Coefficient of Thermal Expansion | 10 · 10-6 per °F (68-392 °F) | 17.3 · 10-6 per °C (20-200 °C) | |||||||||
| Specific Heat Capacity | 0.09 Btu/lb/°F at 68 °F | 377.1 J/kg at 293 °C | |||||||||
| Modulus of Elasticity in Tension | 11000 ksi | 75800 MPa | |||||||||
Fabrication Properties :
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Fabrication Properties provided by CDA
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| Joining Technique | Suitability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Soldering | Good | ||||||||||
| Brazing | Good | ||||||||||
| Oxyacetylene Welding | Not Recommended | ||||||||||
| Gas Shielded Arc Welding | Not Recommended | ||||||||||
| Coated Metal Arc Welding | Not Recommended | ||||||||||
Thermal Properties :
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Thermal Properties provided by CDA
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| Treatment | Temp./Time – US | Temp./Time – SI | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stress Temperature | 500 | 260 | |||||||||
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| Solution Time | 0.0 | ||||||||||
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