ASTM A182 F22
UNS K21590ASTM A182 F22 material
Key Engineering Metrics
Instant specifications summary for ASTM A182 F22
General Specifications & Standard Data
ASTM A182Minimum Design Metal Temperature rules for impact testing exemption under ASME B31.3 paragraph 323.2.2.
Mechanical Properties
Room Temp (20°C / 68°F)Allowable Stress Data (ASME B31.3 Table A-1)
asme-bpvcAllowable Stress vs Temperature
ASME B31.3 / BPVC Section II Part D Reference Curve
| Temperature (°C) | Allowable Stress (MPa) | % of Room Temp Rating |
|---|---|---|
| 38 | 117.9 | 100% |
| 100 | 117.2 | 99% |
| 150 | 114.5 | 97% |
| 200 | 114.5 | 97% |
| 250 | 114.5 | 97% |
| 300 | 114.5 | 97% |
| 350 | 114.5 | 97% |
| 400 | 114.5 | 97% |
| 450 | 114.5 | 97% |
| 500 | 81.4 | 69% |
| 550 | 48.3 | 41% |
| 600 | 24.1 | 20% |
| 650 | – | – |
🛡️ ASME B16.5 Flange P-T Ratings & Calculator
Material Group 1.10 (Carbon and low-alloy steel materials)
| Temp (°C) | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
|---|---|---|---|---|---|---|---|
| -29 to 38 | 19.8 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 100 | 17.7 | 51.5 | 68.7 | 103 | 154.6 | 257.6 | 429.4 |
| 150 | 15.8 | 50.3 | 66.8 | 100.3 | 150.6 | 250.8 | 418.2 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 145.8 | 243.4 | 405.4 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139 | 231.8 | 386.2 |
| 300 | 10.2 | 42.9 | 57 | 85.7 | 128.6 | 214.4 | 357.1 |
| 325 | 9.3 | 41.4 | 55 | 82.6 | 124 | 206.6 | 344.3 |
| 350 | 8.4 | 40.3 | 53.6 | 80.4 | 120.7 | 201.1 | 335.3 |
| 375 | 7.4 | 38.9 | 51.6 | 77.6 | 116.5 | 194.1 | 323.2 |
| 400 | 6.5 | 36.5 | 48.9 | 73.3 | 109.8 | 183.1 | 304.9 |
| 425 | 5.5 | 35.2 | 46.5 | 70 | 105.1 | 175.1 | 291.6 |
| 450 | 4.6 | 33.7 | 45.1 | 67.7 | 101.4 | 169 | 281.8 |
| 475 | 3.7 | 31.7 | 42.3 | 63.4 | 95.1 | 158.2 | 263.9 |
| 500 | 2.8 | 28.2 | 37.6 | 56.5 | 84.7 | 140.9 | 235 |
| 538 | 1.4 | 18.4 | 24.6 | 36.9 | 55.3 | 92.2 | 153.7 |
| 550 | – | 15.6 | 20.8 | 31.3 | 46.9 | 78.2 | 130.3 |
| 575 | – | 10.5 | 14 | 21.1 | 31.6 | 52.6 | 87.7 |
| 600 | – | 6.9 | 9.2 | 13.8 | 20.7 | 34.4 | 57.4 |
| 625 | – | 4.5 | 6 | 8.9 | 13.4 | 22.3 | 37.2 |
| 650 | – | 2.8 | 3.8 | 5.7 | 8.5 | 14.2 | 23.6 |
Working pressures are in gauge (bar). Values interpolated linearly for intermediate temperatures per ASME B16.5 para. 2.3.
Chemical Composition (% Weight)
Heat & Product Analysis🛡️ Service Compatibility
Industry standard for main steam & reheat piping up to 593°C (1100°F) for P91.
Resistant to High Temperature Hydrogen Attack per API RP 941 (Nelson Curves).
High creep-rupture strength in refinery vacuum furnaces and hydrocrackers.
High weld heat-affected zone hardness; requires strict PWHT to prevent SSC.
High ductile-to-brittle transition temp; strictly high-temperature service.
🔥 Welding & Heat Treatment
Mandatory preheat: 150°C–200°C for P11/P22; 200°C–250°C for P91/C12A. Maintain preheat until PWHT or post-bake.
Mandatory post-weld heat treatment for all thicknesses: P11/P22 (650°C–700°C), P91 (730°C–760°C) per ASME B31.3 Table 331.1.1.
Impact testing required for low-temperature applications or code thickness thresholds.
🔗 Material Equivalents
Material property data provided is for preliminary engineering reference. Always verify properties against the latest ASME BPVC Section II, ASTM material specification, and Material Test Report (MTR/MTC).