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C92200 Tin Bronze Casting

C92200 Tin Bronze Casting
C92200 Tin Bronze Casting, known as Steam Bronze or Navy M Bronze (UNS C92200), contains nominally 88% copper, 6% tin, 1.5% lead, and 4.5% zinc. Its combination of good casting characteristics, pressure tightness, and machinability makes it ideal for steam, water, and general service fittings. Indicative price: US$ 8.50/kilogram (subject to quantity and specification).
C92200 Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 86.0 | 90.0 |
| Tin (Sn) | 5.5 | 6.5 |
| Lead (Pb) | 1.0 | 2.0 |
| Zinc (Zn) | 3.0 | 5.0 |
| Nickel (Ni) | — | 1.0 |
| Iron (Fe) | — | 0.25 |
C92200 Mechanical Properties (Sand Cast – ASTM B584)
| Property | Value |
|---|---|
| Tensile Strength | 283 MPa (41,000 psi) min |
| Yield Strength | 138 MPa (20,000 psi) min |
| Elongation | 25% min |
| Brinell Hardness | 65 HB typical |
| Density | 8.80 g/cm³ |
| Melting Range | 871–1010°C (1600–1850°F) |
International Equivalents of C92200
| Standard | Designation | Common Name |
|---|---|---|
| USA – UNS | C92200 | Steam Bronze / Navy M Bronze |
| UK – BS 1400 | LG1 | Leaded Gunmetal |
| Europe – EN 1982 | CC480K | CuSn3Zn8Pb5 |
| Germany – DIN | 2.1080 | CuSn3ZnPb |
| ISO 1338 | CuSn6Zn6Pb3 | Leaded Tin Bronze |
| Japan – JIS H5111 | CAC406 | Gunmetal |
Typical Applications
C92200 Steam Bronze castings are used for: steam and water valves and fittings, pipe flanges and couplings, pump bodies, plumbing hardware, low-pressure hydraulic fittings, and general service valve bodies.