ASTM A182 F304
UNS S30400ASTM A182 F304 material
Key Engineering Metrics
Instant specifications summary for ASTM A182 F304
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-b31-3Allowable Stress vs Temperature
ASME B31.3 / BPVC Section II Part D Reference Curve
| Temperature (°C) | Allowable Stress (MPa) | % of Room Temp Rating |
|---|---|---|
| 38 | 137.9 | 100% |
| 100 | 137.9 | 100% |
| 150 | 137.9 | 100% |
| 200 | 131.0 | 95% |
| 250 | 122.0 | 88% |
| 300 | 115.0 | 83% |
| 350 | 112.0 | 81% |
| 400 | 108.0 | 78% |
| 450 | 105.0 | 76% |
| 500 | 102.0 | 74% |
🛡️ ASME B16.5 Flange P-T Ratings & Calculator
Material Group 2.1 (Stainless steel materials)
| Temp (°C) | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
|---|---|---|---|---|---|---|---|
| -29 to 38 | 19 | 49.6 | 66.2 | 99.3 | 148.9 | 248.2 | 413.7 |
| 50 | 18.3 | 47.8 | 63.8 | 95.6 | 143.5 | 239.1 | 398.5 |
| 100 | 15.7 | 40.9 | 54.5 | 81.7 | 122.6 | 204.3 | 340.4 |
| 150 | 14.2 | 37 | 49.3 | 74 | 111 | 185 | 308.4 |
| 200 | 13.2 | 34.5 | 46 | 69 | 103.4 | 172.4 | 287.3 |
| 250 | 12.1 | 32.5 | 43.3 | 65 | 97.5 | 162.4 | 270.7 |
| 300 | 10.2 | 30.9 | 41.2 | 61.8 | 92.7 | 154.6 | 257.6 |
| 325 | 9.3 | 30.2 | 40.3 | 60.4 | 90.7 | 151.1 | 251.9 |
| 350 | 8.4 | 29.6 | 39.5 | 59.3 | 88.9 | 148.1 | 246.9 |
| 375 | 7.4 | 29 | 38.7 | 58.1 | 87.1 | 145.2 | 241.9 |
| 400 | 6.5 | 28.4 | 37.9 | 56.9 | 85.3 | 142.2 | 237 |
| 425 | 5.5 | 28 | 37.3 | 56 | 84 | 140 | 233.3 |
| 450 | 4.6 | 27.4 | 36.5 | 54.8 | 82.2 | 137 | 228.4 |
| 475 | 3.7 | 26.9 | 35.9 | 53.9 | 80.8 | 134.7 | 224.5 |
| 500 | 2.8 | 26.5 | 35.3 | 53 | 79.5 | 132.4 | 220.7 |
| 538 | 1.4 | 24.4 | 32.6 | 48.9 | 73.3 | 122.1 | 203.6 |
| 550 | – | 23.6 | 31.4 | 47.1 | 70.7 | 117.8 | 196.3 |
| 575 | – | 20.8 | 27.8 | 41.7 | 62.5 | 104.2 | 173.7 |
| 600 | – | 16.9 | 22.5 | 33.8 | 50.6 | 84.4 | 140.7 |
| 625 | – | 13.8 | 18.4 | 27.6 | 41.4 | 68.9 | 114.9 |
| 650 | – | 11.3 | 15 | 22.5 | 33.8 | 56.3 | 93.8 |
| 675 | – | 9.3 | 12.5 | 18.7 | 28 | 46.7 | 77.9 |
| 700 | – | 8 | 10.7 | 16.1 | 24.1 | 40.1 | 66.9 |
| 725 | – | 6.8 | 9 | 13.5 | 20.3 | 33.8 | 56.3 |
| 750 | – | 5.8 | 7.7 | 11.6 | 17.3 | 28.9 | 48.1 |
| 775 | – | 4.6 | 6.2 | 9 | 13.7 | 22.8 | 38 |
| 800 | – | 3.5 | 4.8 | 7 | 10.5 | 17.4 | 29.2 |
| 816 | – | 2.8 | 3.8 | 5.9 | 8.6 | 14.1 | 23.8 |
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
Retains high impact toughness down to -196°C (-320°F). Standard for LNG & liquid nitrogen.
Superior resistance to nitric acid, organic acids, and pharmaceutical process streams.
Zero rust/iron contamination for DI water, pure steam, and food/beverage lines.
NACE MR0175 compliant for low-severity sour service without PWHT.
High susceptibility to pitting and Chloride Stress Corrosion Cracking (CSCC) >60°C.
🔥 Welding & Heat Treatment
None required (ambient ≥ 10°C). Interpass temperature must be strictly controlled < 150°C (300°F) to prevent heat tint & carbide precipitation.
PWHT is not recommended or required; causes chromium carbide sensitization. Full solution annealing at 1040°C + rapid quench if required.
Exempt down to -196°C (-320°F) per ASME B31.3 Table 323.2.2 for base metal & filler metal.
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).