Patent ID: 6918967
Filing Date: 2005-07-19
Classification: C22C

Abstract:
1. A corrosion resistant austenitic alloy consisting essentially of, in % by weight, Ni: 26-30 Cr: 20-22 Mo: 6.5-7.5 N: 0.31-0.35 Mn: 0-5 Cu: 0-1.5 C: 0-0.2 Al: 0-1 S: 0-0.01 Ti: 0-1 Si: 0-1 Mg: up to trace amounts Ca: up to trace amounts Ce: up to trace amounts Fe: balance including incidental impurities; and wherein the alloy has a sigma solvus temperature of less than 2000° F. for improved processability and a pitting resistance equivalent number (PREN) of 50 or greater, wherein: