US 12,448,673 B2
Austenitic stainless alloy with superior corrosion resistance
Grant Harding, Whitby (CA)
Assigned to CHEMETICS INC., Vancouver (CA)
Appl. No. 17/272,168
Filed by CHEMETICS INC., Vancouver (CA)
PCT Filed Aug. 23, 2019, PCT No. PCT/US2019/047849
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/046735, PCT Pub. Date Mar. 5, 2020.
Claims priority of provisional application 62/724,572, filed on Aug. 29, 2018.
Prior Publication US 2021/0214825 A1, Jul. 15, 2021
Int. Cl. C22C 38/58 (2006.01); C21D 1/18 (2006.01); C21D 1/26 (2006.01); C21D 6/00 (2006.01); C21D 8/00 (2006.01); C22C 30/00 (2006.01); C22C 38/00 (2006.01)
CPC C22C 38/58 (2013.01) [C21D 1/18 (2013.01); C21D 1/26 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 8/005 (2013.01); C22C 30/00 (2013.01); C22C 38/001 (2013.01); C21D 2211/001 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An austenitic stainless alloy comprising the following composition in weight %:
36-40% chromium;
32.5-36% nickel;
1.55-1.75% manganese;
0.37-0.48% nitrogen;
0.03-0.43% silicon;
<0.02% carbon;
<0.02% phosphorus;
<0.04% molybdenum;
<0.02% copper;
<0.005% sulfur; and
remainder consisting essentially of iron.