stainless steel 321 - coil slitting 321 UNS S32100 Type 321 contains a titanium addition of
at least five times the carbon content to overcome
the sensitizing tendency during welding. Its corrosion
resistance is similar to Type 304 but 321 performs
better in the 800?-1650?F sensitization range. In
Type 321, the oxide or carbonitride of titanium
may develop minute black or dark gray inclusions.
When the metal is ground or buffed these inclusions
may appear and destroy surface appearance, although
it will not damage the utility or workability of
the metal. Resistance to abrasion is favorable.
Uses include aircraft engine components, chemical
kilns, exhaust systems and stack liners, flash boilers
and welded equipment.
chemical composition limits
(%)
Carbon
C
Manganese
Mn
Phosphorus
P
Sulfur
S
Silicon
Si
Chromium
Cr
Nickel
Ni
Titanium
Ti
0.08
2.00
0.045
0.030
1.00
17.00-19.00
9.00-12.00
5 x C+N –0.70
Representative mechanical property
condition
tensile strength
yield strength
elongation
rockwell
KSi
MPa
ksi
mpa
in
2 inches %
Annealed
75
(515)
30
(205)
40
B-95
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.
