Seamless Stainless Steel TP310H Tube
GZH is a specialized manufacturer and global exporter of TP310H (UNS S31009) seamless stainless steel tubes, based in Wenzhou, China. Engineered for high-temperature service, our TP310H tubing is the industry standard for environments requiring high creep strength and oxidation resistance.
As a leading 310H stainless steel seamless pipe supplier, we provide precision-drawn tubes that comply with ASTM A213, A312, and EN 10216-5 standards. The high carbon content in TP310H ensures superior mechanical properties and structural stability at sustained elevated temperatures, outperforming lower-carbon alternatives in heavy-duty thermal processing.
Technical Profile: TP310H (UNS S31009 / 1.4845)
TP310H is a high-chromium, high-nickel austenitic alloy designed for service in temperatures up to 1100°C (2012°F). Its optimized chemistry provides an excellent balance of ductility and strength.
Technical Attribute Manufacturing Range & Specifications
Outer Diameter (OD) 6.35mm – 406mm
Wall Thickness (WT) 0.5mm – 30mm (SCH 5S to SCH XXS)
Standard Compliance ASTM A213 (Boiler/Exchanger), ASTM A312 (Pipe)
Testing Protocols Hydrostatic, Eddy Current, Grain Size Analysis, Creep Testing
Surface Finish Solution Annealed & Pickled (AP), Bright Annealed (BA)
Performance Advantages of GZH TP310H Tubing
• Enhanced Creep Strength: The controlled carbon range (0.04–0.10%) provides significantly higher creep rupture strength compared to TP310S.
• Oxidation & Carburization Resistance: High Chromium (25%) and Nickel (20%) content forms a protective oxide layer that resists scaling in moderately carburizing atmospheres.
• Metallurgical Stability: Our advanced solution annealing process prevents sigma phase embrittlement, ensuring long-term ductility in high-heat cycles.
• Wenzhou Manufacturing Excellence: Our facility utilizes state-of-the-art cold-rolling and cold-drawing equipment to achieve tight di
What Is a Seamless Stainless Steel TP310H Tube?
Seamless Stainless Steel TP310H Tube is a high-temperature, corrosion-resistant tube crafted from a single, solid billet of a high-chromium and high-nickel austenitic stainless steel. It is manufactured without a weld joint, ensuring superior structural integrity and reliability, especially under high-stress and high-temperature conditions. The"310H"designation refers to a specific grade that is a high-carbon version of Stainless Steel 310. This higher carbon content (0.04-0.10%) provides enhanced creep and stress-rupture properties at elevated temperatures, making it a preferred choice for applications where long-term high-temperature strength and stability are critical. This makes it a top choice for demanding applications in industrial furnaces, power generation, and heat treatment.
Key Features and Advantages
Stainless Steel 310H Seamless Tube offer a unique combination of benefits that make them invaluable in demanding high-temperature industries:
Excellent High-Temperature Strength: The higher carbon content provides superior creep and stress-rupture properties, ensuring long-term structural stability at temperatures exceeding 1100°F (593°C).
Outstanding High-Temperature Oxidation Resistance: The high chromium and nickel content provides superior resistance to oxidation and scaling in high-temperature air.
Resistance to Carburization: The alloy is highly resistant to carburization, which is crucial for applications in high-temperature furnaces and reducing atmospheres.
High Pressure and Temperature Tolerance: The seamless construction and robust material allow the tube to safely handle high internal pressures and extreme temperatures.
Good Weldability: The alloy can be readily welded using standard methods, and its balanced composition helps prevent hot cracking.
Product Specifications and Data
To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for Stainless Steel 310H.
Table 1: Chemical Composition of Stainless Steel 310H
The composition of Stainless Steel 310H is carefully balanced to achieve its superior high-temperature strength and oxidation resistance.
| Cr | Ni | Mn | Si | P | S | Fe | C |
| 24.00 - 26.00 | 19.00 - 22.00 | ≤ 2.00 | ≤ 1.50 | ≤ 0.045 | ≤ 0.030 | Bal | 0.04 - 0.10 |
Table 2: Typical Mechanical Properties of Stainless Steel 310H
Stainless Steel 310H is specifically designed to maintain its strength and shape in high-stress, high-temperature environments.
| Property | Value (Annealed) |
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 217 HBW |
Table 3: Typical Physical Properties of Stainless Steel 310H
These physical properties highlight the material's ability to perform reliably under a wide range of conditions.
| Property | Value |
| Density | 7.9 g/cm³ |
| Melting Point | 1400 - 1450 °C approx. |
| Thermal Expansion | 16.5 µm/m·°C (20-100°C) |
| Thermal Conductivity | 14.2 W/m·K (20°C) |
| Modulus of Elasticity | 200 GPa |
| Electrical Resistivity | 0.78 x 10⁻⁶ Ω·m (20°C) |
Table 4: The Standard of Stainless Steel Seamless Tube Size Tolerance Size Chart :
| Standard | OD(D) | Tolerance（MM) | Thickness(S) | Tolerance(MM) | Length | Tolerance | |
| MM | Common | High | MM | MM | |||
| EN 10216-5 HFD | 30≤D≤219.1（D2) | ±1.0% or ±0.5mm, whicever is the greater(取较大者) | T1, T≤4 | ±15% or ±0.6mm, whicever is the greater(取较大者) | L≤6M | +5/0 | |
| T2 | ±12.5% or ±0.4mm, whicever is the greater(取较大者) | ||||||
| 219.1≤D≤610 (D1) | ±1.5% or ±0.75mm, whicever is the greater (取较大者) | T≤0.05D | +22.5%/-15% | 6 | +10/0 | ||
| T1, 0.05D | ±15% or ±0.6mm, whicever is the greater(取较大者) | ||||||
| T2, T>0.09D | ±12.5% or ±0.4mm, whicever is the greater(取较大者) | L>12 | +by agreement/0 | ||||
| EN 10216-5 CFD | D3(D≤219.1) | ±0.75% or ±0.3mm, whicever is the greater(取较大者) | T3 | ±10% or ±0.2mm, whicever is the greater(取较大者) | |||
| D4(D≤219.1) | ±0.5% or ±0.mm, whicever is the greater(取较大者) | T4 | ±7.5% or ±0.15mm, whicever is the greater(取较大者) | ||||
| ASTM A213 HFD | D≤100 | +0.4/-0.8 | D<100,S≤2.4 | +40%/0 | HFD, all size | +5.0/0 | |
| +0.4/-1.2 | D<100,2.4 | +35%/0 | |||||
| +0.4/-1.6 | D<100,3.8 | +33%/0 | |||||
| D<100,S>4.6 | +28%/0 | ||||||
| 100 | +0.4/-1.2 | D>100, 2.4 | +35%/0 | ||||
| 200 | +0.4/-1.6 | D>100,3.8 | +33%/0 | ||||
| D>100,S>4.6 | +28%/0 | ||||||
| ASTM A213 CFD | D<25 | ±0.10 | D≤38.1 | +20%/0 | CFD, D<50.8 | +3.0/0 | |
| 25≤D≤40 | ±0.15 | ||||||
| 40 | ±0.20 | ||||||
| 50≤D<65 | ±0.25 | ||||||
| 65≤D<75 | ±0.30 | D>38.1 | +22%/0 | CFD, D≥50.8 | +5.0/0 | ||
| 75≤D≤100 | ±0.38 | ||||||
| 100 | +0.38/-0.64 | ||||||
| 200 | +0.38/-1.14 | ||||||
| ASTM A269 | D≤13 | ±0.13 | D≤13 | ±15% | D<38 | +3.2/0 | |
| 13 | ±0.13 | 13 | ±10% | ||||
| 38≤D<89 | ±0.25 | D>38 | +4.8/0 | ||||
| 89≤D<140 | ±0.38 | ||||||
| 140≤D<203 | ±0.76 | ||||||
| 203≤D<305 | ±1.01 | ||||||
| 305≤D<356 | ±1.26 | ||||||
| ASTM A270 | D<25 | ±0.13 | For weld pipe all size | ±12.5% | +3.0/0 | ||
| 25-50 | ±0.20 | ||||||
| 50-75 | ±0.25 | ||||||
| 75-100 | ±0.38 | For CD SMLS pipe D≤38.1 | +20%/0 | ||||
| 100-140 | ±0.38 | +5.0/0 | |||||
| 140-200 | ±0.75 | For CD SMLS pipe D>38.1 | +22%/0 | ||||
| 200-300 | ±1.25 | ||||||
Common Applications
The combination of high-temperature strength and exceptional oxidation resistance of TP310H Seamless Tube makes them a preferred choice for:
Power Generation: Used in superheater and reheater tubes for boilers where long-term high-temperature stability is critical.
Heat Treating Industry: In radiant tubes, muffles, retorts, and other furnace parts.
Chemical and Petrochemical Processing: For furnace tubes, burner components, and other high-temperature applications.
Cement Industry: For kiln components and other high-temperature process equipment.
