321/321H stainless steel pipe
Product Description
Physical Properties of 321/321H Alloys in the Annealed Condition at -20°F to +100°F
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Tensile Strength |
Yield Strength |
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| Alloy |
UNS Designation |
Spec. |
psi |
MPa |
ksi |
psi |
MPa |
ksi |
Elongation in 2 inches (min.) % |
Grain Size Req. |
Maximum Harndess |
Modulus of Elasticity (x106psi) |
Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) |
Thermal Conductivity (BTU-in/ft2-h-°F) |
| 321 |
S32100 |
— |
75,000 |
515 |
— |
30,000 |
205 |
— |
35 |
— |
— |
29.0 |
9.2 |
— |
| 321H |
S32109 |
— |
75,000 |
515 |
— |
30,000 |
205 |
— |
35 |
7 or coarser |
— |
29.0 |
9.2 |
— |
Composition 321/321H tubing and pipe
| Grade |
321 |
321H |
| UNS Designation |
S32100 |
S32109 |
| Carbon (C) Max. |
0.08 |
0.04–0.10 |
| Manganese (Mn) Max. |
2.00 |
2.00 |
| Phosphorous (P) Max. |
0.04 |
0.04 |
| Sulphur (S) Max. |
0.03 |
0.03 |
| Silicon (Si) Max. |
0.75 |
0.75 |
| Chromium (Cr) |
17.0–20.0 |
17.0–20.0 |
| Nickel (Ni) |
9.0–12.0 |
9.0–12.0 |
| Molybdenum (Mo) |
— |
— |
| Nitrogen (N) |
0.1 Max. |
0.1 Max. |
| Iron (Fe) |
Bal. |
Bal. |
| Other Elements |
Ti=5(C) to 0.70% |
Ti=4(C) to 0.60% |
321/321H Product Range
| Alloy |
UNS Designation |
Werkstoff NR. |
Specifications* |
| 321 |
S32100 |
1.4541 |
A269, A/SA249, A/SA312 |
| 321H |
S32109 |
— |
A/SA249, A/SA312 |
*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.
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