ASTM A213 TP347H Seamless Austenitic Alloy Steel Heat Exchanger Tube，High Temperature And Corrosion Resistance
ASTM A213 TP347H Seamless Austenitic Alloy Steel Heat Exchanger Tube,High Temperature And Corrosion Resistance
ASTM A213 is a standard specifically for seamless steel tubes used in heat exchange equipment operating under high pressure and high temperature conditions.
Tubes manufactured according to this standard are widely used in boilers, superheaters, reheaters, heat exchangers, condensers, and other similar equipment.
ASTM A213 TP347H seamless tubes are particularly suitable for power plant boilers.
This is because 347H material is suitable for environments with high-temperature steam, long-term operation, where post-weld heat treatment is not possible, and where the temperature is within the creep temperature range.
| Chemical Composition (%) | ||
| Element | Standard Requirement (≤) | Typical Value / Note |
| Carbon (C) | 0.15 max | 0.09–0.13 |
| Manganese (Mn) | 0.30–0.60 | 0.40–0.60 |
| Phosphorus (P) | 0.025 max | 0.020 max |
| Sulfur (S) | 0.025 max | 0.015 max |
| Silicon (Si) | 0.25–1.00 | 0.50–0.80 |
| Chromium (Cr) | 8.00–10.00 | 8.50–9.50 |
| Molybdenum (Mo) | 0.90–1.10 | 0.95–1.05 |
| Iron (Fe) | Balance | Balance |
| Others | — | Residuals |
| Mechanical Properties | ||
| Property | Standard Requirement | Note / Condition |
| Tensile Strength, min | 415 MPa (60 ksi) | |
| Yield Strength, min | 205 MPa (30 ksi) | 0.2% offset |
| Elongation in 2 in (50 mm), min | 30% | For wall thickness ≥ 0.007 in (0.18 mm) |
| Hardness, max | 179 HBW | Brinell Hardness (typical) |
| Heat Treatment | Full Anneal | Or normalized and tempered |
Applications:
- Tube bundles for high-temperature superheaters and reheaters
- Steam pipes and water-cooled walls in boilers
- Heating furnaces and reforming units in oil refineries and chemical plants
- Petrochemical heat exchangers; process piping in high-temperature, high-pressure environments with corrosive media
- Boiler and pressure vessel manufacturing; industrial boilers and waste heat recovery systems.
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