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to Cast tin bronzes and leaded tin bronzes
to Properties of copper alloys
(submitted by the website administration)
| Cast copper alloy C91700 (Nickel Gear Bronze) | ||||
| Chemical composition: Sn=11.9%, Ni=1.6%, Cu=86.5% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.75 *10³ | kg/m³ | 546 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 103 | GPa | 15000 | ksi |
| Thermal expansion (20 ºC) | 16.2*10-6 | ºCˉ¹ | 9.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 70.6 | W/(m*K) | 490 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 17.2*10-8 | Ohm*m | 17.2*10-6 | Ohm*cm |
| Tensile strength (sand cast) | 303 | MPa | 44000 | psi |
| Yield strength (sand cast) | 152 | MPa | 22000 | psi |
| Elongation (sand cast) | 16 | % | 16 | % |
| Hardness (sand cast) | 85 | HB(500) | 85 | HB(500) |
| Tensile strength (perm. mold) | 414 | MPa | 60000 | psi |
| Yield strength (perm. mold) | 221 | MPa | 32000 | psi |
| Elongation (permanent mold) | 16 | % | 16 | % |
| Hardness (permanent mold) | 106 | HB(500) | 106 | HB(500) |
| Liquidus temperature | 1015 | ºC | 1859 | ºF |
| Solidus temperature | 851 | ºC | 1563 | ºF |
