C .06 max
MN 2.00 max
P 0.035 max
S 0.035 max
Si 1.00 max
Cr 19.0 -21.0
Ni 32.5 -35.0
Mo 3.0 - 4.0
Cu Cb+Ta
Fe bal

Carpenter 20 or Alloy 20 is an austenitic stainless steel with excellent resistance to hot sulfuric acid and many aggressive environments which readily attack Type 316 stainless. Excellent resistance to stress-corrosion cracking. Weldable, machinable and cold formable. The alloy of choice for use in sulfuric acid.

Available forms of Carpenter 20 or Alloy 20 are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges.

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