Tianjin Bohai Metal Corporation

ALLOY 254 STAINLESS STEEL

Alloy 254, which is also found under UNS S31254, is a super austenitic stainless steel that is well known for its outstanding resistance to pitting, crevice corrosion, stress cracking, and fatigue corrosion.

Stainless Steel Coil/Sheet

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Commodity name: ALLOY 254 STAINLESS STEEL

Product Information

Alloy 254 SMO is a very high end, molybdenum and nitrogen alloyed super austenitic stainless steel with low carbon content. It demonstrates outstanding resistance to pitting, crevice corrosion stress cracking, and corrosion fatigue uniform corrosion. Alloy 254 SMO is substantially stronger than the common austenitic grades, with strength nearly twice that of 300 series stainless steel. It is also characterized by high ductility and impact strength. With high levels of chromium, molybdenum, and nitrogen, Alloy 254 SMO is frequently used in high chloride environments, such as brackish water, seawater, pulp mill bleach plants, and other chloride process streams. In some applications it has even been found to be a more cost effective substitute for high nickel and titanium alloys.

Technical data

Chemical Properties

%	C	Cr	Mn	Mo	N	Ni	P	Si	S
254 SMO	0.02 max	min: 19.5 max:20.0	1.00 max	min: 6.0 max: 6.5	min: 0.18 max: 0.20	min: 17.5 max: 18.0	0.03 max	0.80 max	1.01 max

Mechanical Properties

Grade	Tensile Strength ksi (MPa) min	Yield Strength 0.2% Offset ksi (MPa) min	Elongation - % in 50 mm (min.)	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
254 SMO Sheet & Strip	100 (690)	45 (310)	35	223	96
254 SMO Plate	95 (655)	45 (310)	35	223	96