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321
Technical Data
321 is a titanium stabilised austenitic stainless. The addition of titanium helps improve its welding properties. 321 is a stainless grade suitable for operating at temperatures above 300°C. 321 stainless is available in round bar only.
Typical Analysis
321
C.
Mn.
P.
S.
Si.
Cr.
Ni.
Mo.
Ti.
0.08%
2.00%
0.045%
0.03%
1.00%
17.00-
9.00-
1.00%
5x
max.
max.
max.
max.
max.
19.00%
12.00%
max
%C.
Physical Properties 321
Temperature
20ºC
200ºC
400ºC
800ºC
Modulus of elasticity
20000
18500
17000
13500
kg/mm
Specific heat
0.105
0.125
0.135
0.15
kcal/ºC
Specific electrical resistance
0.7
0.8
1.0
1.15
(resistivity)
Mean value for:
20-100ºC
20-200ºC
20-400ºC
20-800ºC
Coefficient of Thermal Expansion
17
17.5
18
19.5
x10-6 per ºC
Density g/cm3 at 20ºC
7.9
Scaling temperature ºC
875ºC