Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C |
| Supply Ability | 1000 Tons per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Brand Name | YUHONG |
| Model Number | ASTM A213 TP347, ASTM A213 TP347H |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 1000 Tons per month |
| Delivery Time | Depends on quantity | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Brand Name | YUHONG | Model Number | ASTM A213 TP347, ASTM A213 TP347H |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China |
| High Light | ASME SA213 TP347H seamless tube ，austenitic stainless steel boiler tube ，heat exchanger tube with warranty | ||
ASTM A213 TP347H is a seamless, austenitic stainless steel tube specifically engineered for high-temperature service in demanding environments. Designated as a heat-resistant grade (indicated by the "H"), it delivers superior creep-rupture strength compared to its non-H counterparts, making it a reliable choice for pressure-bound applications.
This grade belongs to the niobium-stabilized Cr-Ni austenitic family. The addition of niobium (Nb) significantly enhances its resistance to intergranular corrosion, particularly in environments containing acids, alkalis, and salts. It offers better high-temperature strength and oxidation resistance than standard Type 316 stainless steel.
Primary Standards & Deliveries:
Governing Standard: ASTM A213/A213M - Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
Common Size Range: Tubes are typically supplied with an outside diameter from 3.2 mm (1/8 in) to 127 mm (5 in) and a minimum wall thickness ranging from 0.4 mm to 12.7 mm.
Manufacturing Process: Seamless, available in hot-finished or cold-finished conditions.
TP347H is a high-carbon, niobium-stabilized austenitic stainless steel. The key to its performance is the chemical composition, which ensures stability and strength under thermal stress.
The following table details its standard chemical composition range (in weight percentage):
| Element | Composition Range (%) | Key Function |
|---|---|---|
| Carbon (C) | 0.04 - 0.10 | Enhances high-temperature strength. |
| Manganese (Mn) | ≤ 2.00 | Improves hot ductility and strength. |
| Silicon (Si) | ≤ 1.00 | A deoxidizer that improves oxidation resistance. |
| Phosphorus (P) | ≤ 0.045 | Impurity element, controlled to low levels. |
| Sulfur (S) | ≤ 0.030 | Impurity element, controlled to low levels. |
| Chromium (Cr) | 17.00 - 19.00 | Provides fundamental corrosion and oxidation resistance. |
| Nickel (Ni) | 9.00 - 13.00 | Stabilizes the austenitic structure and improves toughness. |
| Niobium (Nb) | 0.80 - 1.00 (or 8xC min) | Critical Element. Forms stable carbides to prevent chromium depletion at grain boundaries, granting exceptional resistance to intergranular corrosion. |
TP347H offers a robust combination of strength, ductility, and stability for high-temperature operations. The mechanical properties typically meet or exceed the following standard requirements:
| Property | Standard Requirement |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2% Offset) | ≥ 205 MPa (30 ksi) |
| Elongation (A5) | ≥ 35% |
| Hardness (Brinell) | ≤ 192 HB |
Thanks to its high-temperature strength, oxidation resistance, and corrosion stability, ASTM A213 TP347H tubes are the material of choice for critical components in several heavy industries:
Power Generation: Superheater and reheater tubes, main steam lines, and high-pressure boiler tubing in fossil fuel and thermal power plants.
Petrochemical & Chemical Processing: Heat exchanger tubes, reactor internals, and piping systems that handle corrosive media at elevated temperatures.
Oil & Gas Refining: Tubing for refinery heaters, heat recovery systems, and other high-temperature processing units.
Other Industries: Also finds application in synthetic fiber, food, and paper industries where similar corrosion and temperature challenges exist.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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