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.
