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.
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