LG1 Bronze Alloy Casting
LG1 Bronze Alloy Casting is a leaded gunmetal specified under BS 1400 LG1 (British Standard), equivalent to a low-lead gunmetal alloy containing nominally 86% copper, 7% tin, 3% lead, and 4% zinc. LG1 offers good pressure tightness, strength, and corrosion resistance for general engineering, marine, and plumbing applications. Electrical Accessories India manufactures LG1 sand castings and centrifugal castings to BS 1400. Indicative price: US$ 8.80/kilogram.
LG1 Chemical Composition (BS 1400)
| Element |
Min % |
Max % |
| Copper (Cu) |
83.0 |
87.0 |
| Tin (Sn) |
6.0 |
8.0 |
| Lead (Pb) |
1.5 |
4.5 |
| Zinc (Zn) |
3.0 |
5.0 |
| Nickel (Ni) |
— |
2.0 |
| Iron (Fe) |
— |
0.20 |
LG1 Mechanical Properties (Sand Cast – BS 1400)
| Property |
Value |
| Tensile Strength |
280 MPa min |
| Yield Strength |
125 MPa min |
| Elongation |
16% min |
| Brinell Hardness |
65 HB typical |
| Density |
8.8 g/cm³ |
International Equivalents of LG1 Bronze
| Standard |
Designation |
Common Name |
| UK – BS 1400 |
LG1 |
Leaded Gunmetal |
| USA – UNS |
C92200 |
Steam Bronze / Navy M |
| Europe – EN 1982 |
CC480K |
CuSn3Zn8Pb5 |
| Germany – DIN |
2.1080 |
CuSn3ZnPb |
| ISO 1338 |
CuSn6Zn6Pb3 |
Leaded Tin Bronze |
| Japan – JIS H5111 |
CAC406 |
Gunmetal |
Typical Applications
LG1 bronze alloy castings are used for: steam and water valves and fittings, pipe flanges, pump bodies, plumbing hardware, general service valve bodies, and marine engineering components.
← Back to Tin Bronze Casting
