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439 Stainless Steel

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.

Slitting Capabilities
Gauge Range
.004" to .190" (.102 mm to 4.826 mm)
Width Range
.250" to 60" (6.365 mm to 1524 mm)
ID
8, 12, 16 or 20 (inches)
OD
78" maximum
Coil Weight
40,000 lbs maximum
MECHANICAL PROPERTY LIMITS
Temper Tensile Strength Yield Strength Elongation Rockwell
KSi MPa KSi MPa in 2 inches %
Annealed 65 -415 30 -205 22 B-89 max.
CHEMICAL COMPOSITION LIMITS (%)
C
Carbon
Mn
Manganese
P
Phosphorus
S
Sulfur
Si
Silicon
Cr
Chromium
Ni
Nickel
N
Nitrogen
Mo
Molybdemum
Other
0.07 1 0.04 0.03 1 17.00-19.00 0.5 0.04 - Ti 0.20+4(C+N) min; 1.10 max, Al 0.15 max
  • Chemical composition is percent maximum unless shown as a range or a minimum.
  • Source: Aluminum Standards and Data – The Aluminum Association, Inc.
  • Information presented as a guide for reference purposes only and is not intended to be used for product design or application.
Almetals is a world-class specialty aluminum supplier and metal supplier slitter and distributor for industries such as stamping, roll forming, and tube producers. Our coil products include: aluminum, brass & copper, clad metals, cold rolled, fin stock, and coated & stainless steels.
51035 Grand River Avenue
Wixom
Michigan
48393
United States