Good general purpose bronze for applications involving high speeds at low loads.
Full alloy description:
A.W. Fraser Alloy LB4 is a leaded tin bronze conforming to the requirements of B.S. 1400 - 1985 alloy LB4.
LB4 has excellent machining properties, medium strength and good corrosion resistance and will withstand mild acids as found in mine water.
Bearings manufactured from LB4 are suitable for low to moderate loads where there may be slight misalignment or doubtful lubrication for short periods.
Adequate backing for the bearing should be provided.
LB4 is suitable for mild steel shafts with low loadings or hard to moderately hard shafts with moderate or low loads and speed.
The composition of A.W. Fraser alloy LB4 is strictly controlled as are the casting conditions.
Alloy LB4 products are manufactured using the latest continuous and centrifugal casting technology.
Machinability Rating: 70
SAE Grade: 66*
Download tech sheet:
For a full alloy summary, including Chemical Composition and Mechanical Properties, please download our tech sheet in PDF format below...
Search for an alloy by keyword...
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.