321
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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
| TYPICAL ANALYSIS |
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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 |
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Temperature |
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20ºC |
200ºC |
400ºC |
800ºC |
| Modulus of elasticity |
20000 |
18500 |
17000 |
13500 |
| kg/mm |
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| Specific heat |
0.105 |
0.125 |
0.135 |
0.15 |
| kcal/ºC |
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| Specific electrical resistance |
0.7 |
0.8 |
1.0 |
1.15 |
| (resistivity) |
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Mean value for: |
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20-100ºC |
20-200ºC |
20-400ºC |
20-800ºC |
| Coefficient of Thermal Expansion |
17 |
17.5 |
18 |
19.5 |
| x10-6 per ºC |
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| Density g/cm3 at 20ºC |
7.9 |
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| Scaling temperature ºC |
875ºC |
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