Improved corrosion resistance; bolts, fittings etc. in marine use. Low lead content for use where environmental aspects may be a concern.
Full alloy description:
A.W. Fraser Alloy 464LL is a low lead variant of the standard American type naval brass conforming to the requirements of ASTM B21 alloy C46400. It is also known as “Tobin Bronze”
464LL has been developed for use in applications where a “lead free” alloy is required having less than 0.03% lead. Alloy 464LL has a deliberate addition of tin, to give improved resistance to corrosion and dezincification, particularly in salt water, and has moderate ductility.
The composition of A. W. Fraser alloy 464LL is strictly controlled as are the extrusion and finishing operations to achieve a constant standard of quality, properties and structure. All extrusions are manufactured from continuous cast billet stock ensuring uniform dispersion of tin particles and freedom from porosity.
Alloy 464LL may be susceptible to dezincification under certain conditions and is classified a category III alloy.
Machinability Rating: 30
SAE Grade: 73 / J461 / J463
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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.
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