ASTM A352 LCB
UNS J03003ASTM A352 LCB material
Key Engineering Metrics
Instant specifications summary for ASTM A352 LCB
General Specifications & Standard Data
ASTM A352Minimum 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 | 128.2 | 100% |
| 100 | 128.2 | 100% |
| 150 | 128.2 | 100% |
| 200 | 128.2 | 100% |
| 250 | 128.2 | 100% |
| 300 | 124.8 | 97% |
| 350 | 118.6 | 92% |
| 400 | – | – |
| 450 | – | – |
| 500 | – | – |
| 550 | – | – |
| 600 | – | – |
| 650 | – | – |
🛡️ ASME B16.5 Flange P-T Ratings & Calculator
Material Group 1.3 (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 | 18.4 | 48 | 64 | 96 | 144.1 | 240.1 | 400.1 |
| 50 | 18.2 | 47.5 | 63.3 | 94.9 | 142.4 | 237.3 | 395.6 |
| 100 | 17.4 | 45.3 | 60.5 | 90.7 | 136 | 226.7 | 377.8 |
| 150 | 15.8 | 43.9 | 58.6 | 87.9 | 131.8 | 219.7 | 366.1 |
| 200 | 13.8 | 42.5 | 56.7 | 85.1 | 127.6 | 212.7 | 354.4 |
| 250 | 12.1 | 40.8 | 54.4 | 81.6 | 122.3 | 203.9 | 339.8 |
| 300 | 10.2 | 38.7 | 51.6 | 77.4 | 116.1 | 193.4 | 322.4 |
| 325 | 9.3 | 37.6 | 50.1 | 75.2 | 112.7 | 187.9 | 313.1 |
| 350 | 8.4 | 36.4 | 48.5 | 72.8 | 109.2 | 182 | 303.3 |
| 375 | 7.4 | 35 | 46.6 | 69.9 | 104.9 | 174.9 | 291.4 |
| 400 | 6.5 | 32.6 | 43.5 | 65.2 | 97.9 | 163.1 | 271.9 |
| 425 | 5.5 | 27.3 | 36.4 | 54.6 | 81.9 | 136.5 | 227.5 |
| 450 | 4.6 | 21.6 | 28.8 | 43.2 | 64.8 | 107.9 | 179.9 |
| 475 | 3.7 | 15.7 | 20.9 | 31.3 | 47 | 78.3 | 130.6 |
| 500 | 2.8 | 11.1 | 14.8 | 22.1 | 33.2 | 55.4 | 92.3 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
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
Impact tested down to -45°C (-50°F). Standard for LPG, cold hydrocarbons & cold climates.
Ideal for low-temp oil & gas process lines.
Suitable for steam & process up to 343°C (650°F).
Requires NACE MR0175 compliance and controlled hardness ≤22 HRC.
Limited to -45°C. For LNG (-162°C), use Austenitic Stainless Steel (304L/316L).
🔥 Welding & Heat Treatment
10°C min; 95°C for t > 19mm. Maintain interpass temp ≤ 230°C to preserve low-temperature notch toughness.
Required for nominal wall thickness t > 19mm (holding temp 590°C–630°C per ASME B31.3).
Mandatory Charpy V-notch impact testing at -45°C (-50°F) for base metal, HAZ, and weld deposit per ASTM A333.
🔗 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).