C92700 Tin Bronze Casting
C92700 Tin Bronze Casting (UNS C92700) is a leaded tin bronze containing nominally 88% copper, 10% tin, and 2% lead, with no zinc addition. The lead improves machinability while maintaining high strength and corrosion resistance. Indicative price: US$ 9.80/kilogram (subject to quantity and specification).
C92700 Chemical Composition
| Element |
Min % |
Max % |
| Copper (Cu) |
86.0 |
89.0 |
| Tin (Sn) |
9.0 |
11.0 |
| Lead (Pb) |
1.5 |
2.5 |
| Zinc (Zn) |
— |
0.50 |
| Nickel (Ni) |
— |
1.0 |
| Iron (Fe) |
— |
0.20 |
C92700 Mechanical Properties (Sand Cast – ASTM B584)
| Property |
Value |
| Tensile Strength |
276 MPa (40,000 psi) min |
| Yield Strength |
138 MPa (20,000 psi) min |
| Elongation |
20% min |
| Brinell Hardness |
70 HB typical |
| Density |
8.77 g/cm³ |
| Melting Range |
832–1000°C (1530–1830°F) |
International Equivalents of C92700
| Standard |
Designation |
Common Name |
| USA – UNS |
C92700 |
Leaded Tin Bronze |
| UK – BS 1400 |
LG4 |
Leaded Gunmetal |
| Europe – EN 1982 |
CC491K |
CuSn10Pb2 |
| Germany – DIN |
2.1052 |
CuSn10Pb |
| ISO 1338 |
CuSn10 |
Tin Bronze |
| Japan – JIS H5111 |
CAC407 |
Tin Bronze |
Typical Applications
C92700 leaded tin bronze castings are used for: machinable bearings and bushings, pump components requiring tight tolerances, valve bodies and fittings, general engineering castings, and marine hardware components.
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