A testing programme was conducted to investigate the material properties of a new high-
chromium grade of austenitic stainless steel-EN 1.4420 at elevated temperatures. A total of
164 tensile coupons extracted from both cold-rolled and hot-rolled sheets were tested; 80
coupons were tested isothermally with temperatures ranging from 25° C to 1100° C, and 84
were tested anisothermally with stress levels ranging from 10% to 90% of the material 0.2%
proof stress at room temperature. The experimentally derived reduction factors for the key …