stainless steel 439 - coil slitting 439 UNS S43035 Type 439 is a titanium stabilized, 18 percent
chromium alloy that is a ferritic stainless steel
designed to resist corrosion in a variety of oxidizing
environments from fresh water to boiling acids.
Type 439 may also be used in many oxidizing environments
where Type 304 is considered adequate in terms of
general corrosion resistance but is subject to chloride
stress corrosion cracking. This variation does not
require annealing after welding to restore ductility
or to provide intergranular corrosion resistance.
Excellent resistance to stress corrosion cracking,
good weldability, high thermal conductivity and
low thermal expansion characteristics make Type
439 stainless steel an ideal consideration for many
applications.
chemical composition limits
(%)
Carbon
C
Manganese
Mn
Phosphorus
P
Sulfur
S
Silicon
Si
Chromium
Cr
Nickel
Ni
Nitrogen
N
Other
Elements
0.07
1.00
0.040
0.030
1.00
17.00-19.00
0.50
0.04
Ti 0.20+4(C+N) min; 1.10
max, Al 0.15 max
Representative mechanical property
condition
tensile strength
yield strength
elongation
rockwell
KSi
MPa
ksi
mpa
in
2 inches %
Annealed
65
(415)
30
(205)
22
B-89
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.
