309S and 310S
309S and 310S
(OP)
Does anyone know what the "S" in 309S and 310S stainless steels designates? I know for the 300 series materials that the "L" designates low carbon and the "H" designates a grade that has a minimum and maximum carbon limit for hight temperature creep resistance. The standard grades (i.e. 304, 316) that have a max. carbon of 0.08 have no letter designation. But the 309S and 310S have a max carbon of 0.08 and the 309/310 grades have a max. carbon of 0.12. Does the "S" indicate a "standard" carbon level?





RE: 309S and 310S
The same holds for 310 and 310S SS.
RE: 309S and 310S
RE: 309S and 310S
S means that the max %C is 0.08. Grade 310S is used when the application environment involves moist corrodents in a temperature range lower than that which is normally considered
"high temperature service".
Look at this datasheet for other info on 310S:
h
Hope this help
Strider
http://www.corrosionist.com
RE: 309S and 310S
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: 309S and 310S
Curious. "Special" as in a certain product form, a single specific application, or...?
RE: 309S and 310S
It is sort of funny, there are very special grades of 310 available. The NAG (nitric acid grade) with very low residuals is one example.
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Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: 309S and 310S
S
http://www.corrosionist.com