ATI 347 Austenitic Stainless Steel (Nb+Ta stabilized) vs ATI 348 Austenitic Stainless Steel (Nb+Ta stabilized, Nuclear Grade)
Property comparison of ATI 347 Austenitic Stainless Steel (Nb+Ta stabilized) and ATI 348 Austenitic Stainless Steel (Nb+Ta stabilized, Nuclear Grade), both stainless steel.
| Property | ATI 347 Austenitic Stainless Steel (Nb+Ta stabilized) | ATI 348 Austenitic Stainless Steel (Nb+Ta stabilized, Nuclear Grade) | Difference |
|---|---|---|---|
| Yield strength | 205 MPa | 205 MPa | 0% |
| Tensile strength | 515 MPa | 515 MPa | 0% |
| Elongation | 40 % | 40 % | 0% |
| Elastic modulus | 193,000 MPa | 193,000 MPa | 0% |
| Density | 7,960 kg/m³ | 7,960 kg/m³ | 0% |
| Brinell hardness | 201 HB | 201 HB | 0% |
| Thermal conductivity | 16.3 W/m·K | 16.3 W/m·K | 0% |
| Specific heat | 460 J/kg·K | 460 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000017 1/K | 0.000017 1/K | 0% |
| Melting point | 1,398 °C | 1,398 °C | 0% |
Difference is ATI 348 Austenitic Stainless Steel (Nb+Ta stabilized, Nuclear Grade) relative to ATI 347 Austenitic Stainless Steel (Nb+Ta stabilized). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 347
- standard
- ASTM A240
- heat treatment
- Annealed
- grade
- 348
- standard
- ASTM A240
- heat treatment
- Annealed
About austenitic stainless steels
Austenitic stainless steels are the largest stainless family. They are non-magnetic in the annealed condition and gain corrosion resistance from chromium and nickel (and molybdenum in 316-class grades). They cannot be hardened by heat treatment and rely on cold work for higher strength. Includes the 300-series, super-austenitic grades (904L, AL-6XN), and high-nitrogen variants used in pressure vessels and chemical service.
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