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topic 60433

Heat Treat Al Casting for 300 hrs Salt Spray Life

April 17, 2017

Q. I am currently working on Aluminum casting(material LM6) part which needs min. 300-hour salt spray life, so kindly suggest the Heat treatment for the same.

Awaiting for quick responses.

PRAJWAL GAWALI
- Pune,Maharashtra,India


April 2017

A. Hi Prajwal. There are some "quasi heat treat" procedures for steel, like Nitriding, which can improve the corrosion resistance, but I am not personally aware of using heat treatment to improve the corrosion resistance of aluminum. Must the casting remain bare rather than being anodized, plated or powder coated?

Regards,

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Ted Mooney, P.E. RET
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