347 Stainless Steel Sheet, Coil and Bar – AMS 5512, 5646


347 Stainless Steel Sheet, Coil and Bar – AMS 5512, 5646

347 stainless steel is a columbium/tantalum stabilized austenitic chromium-nickel stainless steel. This material is stabilized against chromium carbide formation by the addition of columbium and tantalum. Since these elements have a stronger affinity for carbon than chromium, columbium-tantalum carbides precipitate within the grains instead of forming at the grain boundaries. 347 should be considered for applications requiring intermittent heating between 800ºF (427ºC) and 1650ºF (899ºC) or for welding under conditions which prevent a post-weld anneal.  347 is non-magnetic.

347 Chemical Composition
Element Percent by Weight
C Carbon 0.080%
Mn Manganese 200.00%
P Phosphorus 4.50%
S Sulfur 0.03
Si Silicon 75.00%
Cr Chromium 17.00-19.00
Ni Nickel 9.00-12.00
Nb Columbium and 10xC min to 1.00 max
Ta Tantalum
N Nitrogen 10.00%
Fe Iron Balance