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316 stainless for lead-acid battery making




if 316/316L is not recommended for battery acid [affil links], what stainless is recommended for battery acid [affil links]. Its being used as a battery liquid level electronic indicator.
Thanks

Raymond Buikema
- Grand Haven, Michigan
September 3, 2020




⇩ Closely related postings, oldest first ⇩



We have experienced this problem of corroded machine parts use in lead-acid battery making. The acid use is Sulfuric acid. We have used the Stainless steel 304 grade and we want it change to grade 316. Will this grade resist the acid? How can we test the difference between 304 and 316 grade?

Edgardo V. Eleria
Tool and Die Making - Quezon, City, Philippines
2004


304 is magnetic, 316 non-magnetic(check it out with a magnet)

Tom Sng
Construction - Singapore
2004



Sorry, Tom, that's not accurate. Neither 304 nor 316 is magnetic. It's the 4xx series stainless steels that are magnetic.

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey



316/316L is not recommended for battery acids. Better than 304/304L but not for your probable conditions - strict concentration and temperature control might allow it but not worth the effort. Try Alloy 20. There are other alternatives.

James Divine
Consulting Chem/Corr Engineering - West Richland, Washington, USA
2004



We have the same problem with stainless steel.
Please let me know if you are able to find the correct type of stainless steel.
May be we can exchange views on related issues?
I Look forward to hear from you.
Kind regards,

SULTAN .LALJI
A P Batteries - Nairobi
2006




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