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How to identify 304 stainless steel
Hi my name is Allen
My company purchases many household furniture and accessory pieces such as lamps and figurines. We are struggling to find a sure fire way to make sure that what our suppliers are shipping to us is actually the 304 stainless steel that we are paying for. We had been told that you can use a magnet to check this but until now I have not been able to verify if this is true..
Please lend some advice
Thank you
Allen
Buyer - Morganton, North Carolina
August 9, 2008
Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).
Hi, Allen. This has been addressed dozens of times on this site, so if you need a fuller answer, patiently apply the search engine. But the 2-sentence answer is --
Lack of magnetism is a good indication of type 3xx stainless steels, as opposed to plain steel and lower grades of stainless steel
(4xx series), but there are many other non-magnetic materials like aluminum, brass, and zinc. So if you need a "sure-fire way" you would need to invest $15 thousand to $35 thousand in a "scrap-sorter" spark tester or XRF machine.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
August , 2008
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