LG4 has excellent machining properties, medium strength, good pressure tightness and is not subject to dezincification.
Full alloy description:
A.W. Fraser Alloy LG4 is a leaded gunmetal conforming to the requirements of B.S. 1400 - 1985 alloy LG4 (BS EN 1982 CuSn7Zn2Pb3).
LG4 has excellent machining properties, medium strength, good pressure tightness and is not subject to dezincification (Category I alloy).
It also has good corrosion resistance to seawater and brine, making it suitable for pump and valve components.
LG4 is suitable for bearings having light loads and low to medium speeds with adequate lubrication.
The composition of A.W. Fraser alloy LG4 is strictly controlled as are the casting conditions.
LG4 products are manufactured using the latest continuous casting technology.
Machinability Rating: 80
SAE Grade: n/a
Download tech sheet:
For a full alloy summary, including Chemical Composition and Mechanical Properties, please download our tech sheet in PDF format below...
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The alloy information provided on this page is indicative and must not be taken as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with product specification.
The information contained on this page is based on our present knowledge and is given in good faith as a precursor to discussing your specific requirements with us.
No liability will be accepted by AW Fraser in respect of any action taken by any third party in relying on the data on this page.