facebook_icon

347 Stainless Steel

UNS S34700

Columbium and tantalum have been added to 347 to form columbium carbide in preference to chromium carbide in the sensitization range. Columbium stabilization is desired because its carbides are better retained in welds. It also delays becoming sensitized during exposures to temperatures in the sensitization range. Type 347 does require more care due to the presence of columbium.

This grade has similar applications to Type 321, others include aircraft exhausts and manifolds, fire walls, extended welding of heavy sections for high temperature use, heavy wall welded equipment and heat exchangers.

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 75 -515 30 -205 40 B-88 max.
CHEMICAL COMPOSITION LIMITS (%)
C
Carbon
Mn
Manganese
P
Phosphorus
S
Sulfur
Si
Silicon
Cr
Chromium
Ni
Nickel
N
Nitrogen
Mo
Molybdemum
Other
0.08 2 0.045 0.03 1 17.00-19.00 9.00-13.00 10xC min./1.10 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