High strength aluminium bronze; excellent corrosion resistance, good forging properties and fair machinability.
Full alloy description:
A.W. Fraser Alloy 643 is an aluminium silicon bronze conforming to the requirements of AS1567 – C64300 and is available as extruded rod or tube.
Alloy 643 is typically used for valve stems, valve guides, marine hardware, gears, valve bodies and high strength fasteners. It has excellent corrosion resistance an d very good forging and hot working properties.
Machinability Rating: 60
SAE Grade: 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.
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.