Ferritic Stainless Steels 444 UNS S44400

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444 UNS S44400

This alloy is a low carbon and low nitrogen ferritic stainless steel that contains 18% chromium and 2% molybdenum. One advantage of Type 444 over austenitic stainless steels, such as 304 and 316 alloys, is the practical immunity of the Type 444 alloy to chloride stress corrosion cracking (SCC). The alloy’s enhanced resistance to pitting and crevice corrosion combined with its good general corrosion resistance to a multitude of environments makes it an excellent choice for a wide range of applications such as heat exchanger tubing, food processing equipment, hot water tanks, and automotive exhaust.


CHEMICAL COMPOSITION LIMITS (%)

Carbon C	Manganese Mn	Phosphorus P	Sulfur S	Silicon Si	Chromium Cr	Nickel Ni	Molybdemum Mo	Nitrogen N	Titanium & Columbium Ti&Cb
0.07	1.00	0.040	0.030	1.00	17.00-19.00	0.50	1.75-2.50	0.04	Ti + Cb 0.20+4 (C+N) min; 0.80 max

REPRESENTATIVE MECHANICAL PROPERTY

CONDITION

TENSILE STRENGTH

YIELD STRENGTH

ELONGATION

ROCKWELL

	KSI	MPA	KSI	MPA	IN 2 INCHES %
Annealed	60	(415)	40	(275)	20	B-96 max.
*Minimum Chemical composition is percent maximum unless shown as a range or a minimum. Information presented as a guide for reference purposes only and is not intended for product design or application.