Seamless Stainless Steel TP310 Pipe
Featuring a strategic enrichment of 25% Chromium and 20% Nickel, our TP310 tubing develops a tenacious protective scale that ensures superior performance at continuous service temperatures up to 1100°C (2012°F). These pipes are indispensable for mission-critical applications in radiant tubes, muffle furnaces, and high-temperature chemical processing units. Through advanced cold-drawing and precise solution annealing, GZH guarantees a uniform microstructure and optimized creep strength, providing a reliable choice for the most demanding thermal cycling conditions.
“For applications requiring lower carbon content for welding, we also offer TP310S (UNS S31008), and for higher creep strength, TP310H (UNS S31009) is available.”
What is a Seamless Stainless Steel TP310 Pipe?
TP310 Seamless Stainless Steel Pipe is a cylindrical tube crafted from a single, solid billet of stainless steel. As a seamless product, it has no welded seam, which provides enhanced structural integrity and pressure ratings compared to welded alternatives.
Grade"310"is an austenitic stainless steel with a very high content of chromium and nickel. This high-alloy composition is the key to its exceptional performance at elevated temperatures. It is renowned for its superior resistance to oxidation and scaling, even under continuous use at temperatures up to 1150°C (2100°F). It is a direct upgrade from 309 stainless steel for applications requiring even higher temperature capabilities.
Key Features and Advantages
Seamless TP310 Stainless Steel Pipe offer a unique combination of benefits that make them invaluable in the most demanding industries:
Extreme High-Temperature Resistance: With its high chromium (25%) and nickel (20%) content, 310 stainless steel provides exceptional resistance to oxidation and scaling. It maintains its strength and structural integrity under prolonged exposure to very high temperatures, making it a market leader in this category.
Excellent Corrosion Resistance: It offers superior corrosion resistance compared to many other stainless steel grades, performing well in both high-temperature and aggressive corrosive environments.
High Pressure Tolerance: The seamless construction eliminates a potential weak point, allowing the pipe to safely handle high internal pressures, which is critical in many high-temperature processes.
Superior Durability and Reliability: The uniform, seamless structure ensures maximum strength and a long service life, reducing the need for frequent maintenance or replacement in harsh conditions.
Product Specifications and Data
To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for 310 stainless steel.
Table 1: Chemical Composition of Stainless Steel 310
The composition of Stainless Steel 310 is carefully balanced to achieve its superior high-temperature oxidation resistance and strength.
| 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 | ≤ 0.25 |
Table 2: Typical Mechanical Properties of Stainless Steel 310
Stainless Steel 310 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 310
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 Pipe Size Tolerance Size Chart :
| Standard | OD(D) | Tolerance（MM) | Thickness(S) | Tolerance(MM) | Length | Tolerance | |
| MM | Common | High | MM | MM | |||
| ASTM A312 | D≤48.3 | +0.4/-0.8 | 10.3 | +20%-12.5% | +6.0/0 | ||
| 48.3 | ±0.8 | 88.9 | +22.5%/-12.5% | ||||
| 114.3 | +1.6/-0.8 | 88.9 | +15%/-12.5% | ||||
| 219.1 | +2.4/-0.8 | D≥508, t/D≤5%,SMLS | +22.5%/-12.5% | ||||
| 457.2 | +3.2/-0.8 | D≥508, t/D>5%,SMLS | +15%/-12.5% | ||||
| 660.4 | +4.0/-0.8 | D≥508, WELD | +17.5%/-12.5% | ||||
| 863.6 | +4.8/-0.8 | ||||||
| JIS 3459 Hot-Finished Smls Pipe | D＜50 | ±0.51 | S＜4 | ±0.5 | |||
| D≥50 | ±1.0% | S≥4 | ±12.5% | ||||
| JIS 3459 Cold-Finished | D＜30 | ±0.3 | S＜2 | ±0.2 | |||
| D≥30 | ±1.0% | S≥2 | ±10.0% | ||||
| JIS G3463 Hot-Finished Smls Pipe | 100 | +0.4/-0.8 | D＜100，S<2 | / | D<50, L<7M | +7/0 | |
| D＜100，2≤S<2.4 | +40%/0 | D<50,7< L<10M | +10/0 | ||||
| D＜100，2.4≤S<3.8 | +35%/0 | ||||||
| D＜100，3.8≤S<4.6 | +33%/0 | ||||||
| D＜100，4.6≤S | +28%/0 | D<50,10< L<13M | +13/0 | ||||
| 100≤D<120 | +0.4/-1.2 | D>100, S＜2 | / | ||||
| 120≤D<160 | D>100，2≤S<2.4 | / | D<50,13M< L | +15/0 | |||
| 160≤D<200 | +0.4/-1.8 | D>100，2.4≤S<3.8 | +35%/0 | ||||
| 200≤D | +0.4/-2.4 | D>100，3.8≤S<4.6 | +33%/0 | D>50,7< L<7M | +10/0 | ||
| D>100，4.6≤S | +28%/0 | ||||||
| JIS G3463 Cold-finished | <60 | +0.4/-0.8 | D<40, S<2.0 | +0.4/0 | |||
| 60≤D<80 | ±0.3 | D<40, S≥2.0 | +20%/0 | D>50,7< L<10M | +13/0 | ||
| 80≤D<100 | ±0.4 | D≥40 | +22%/0 | ||||
| 100≤D<120 | +0.4/-0.6 | ||||||
| 120≤D<160 | +0.4/-0.8 | D>50,10M< L | +15/0 | ||||
| 160≤D<200 | +0.4/-1.2 | ||||||
| 200≤D | +0.4/-1.6 | ||||||
| GB/T 14975 冷拔(扎)钢管 | D<12.7 | ±0.3 | ±0.1 | 所有壁厚，普通级PA | +12.5%/-10% | ||
| 12.7 | ±0.15 | ||||||
| 38.1 | ±0.4 | ±0.3 | |||||
| 88.9 | ±0.9% | ±0.4 | |||||
| 139.7 | ±0.8 | 所有壁厚，高级PC | ±10% | ||||
| 203.2 | ±1.1 | ||||||
| 219.1 | ±1.6 | ||||||
| D≥323.9 | ±0.5% | ||||||
| GB/T 14976 冷拔(轧)钢管 | 6 | ±0.2 | ±0.15 | S≤3 | ±12%(10% /0高级PC) | ||
| 10≤D<30 | ±0.2 | ±0.2 | |||||
| 30≤D<50 | ±0.2 | ±0.3 | S>3 | +12.5%/-10%(10%/0高级PC) | |||
| 50≤D<219 | 0.85% | 0.75% | |||||
| D>219 | 0.9% | 0.8% | Smin, all | +22%/0(+20%/0高级PC) | |||
Common Applications
The unique combination of extreme heat and corrosion resistance makes Seamless Stainless Steel TP310 Pipe a preferred choice for:
Furnace Parts: Used for furnace linings, burners, and heat shields in industrial furnaces and kilns.
Heat Exchangers: For transferring heat in applications where temperatures are extremely high.
Chemical Processing: In systems handling hot, corrosive chemicals and gases.
Thermal Processing Equipment: Components for equipment in the heat treatment and metallurgical industries.
Cryogenic Applications: Its low magnetic permeability and excellent toughness at cryogenic temperatures also make it suitable for some cold-temperature applications.
Manufacturing Process
The manufacturing of a Seamless Stainless Steel TP310 Pipe is a precise, multi-step process:
- Heating: A solid steel billet is heated to a high temperature.
- Piercing: A piercing mill pushes a mandrel through the center of the heated billet to form a hollow shell.
- Rolling and Sizing: The hollow shell is then rolled and drawn to reduce its diameter and wall thickness to the desired dimensions.
- Finishing: The pipe is cut to length, heat-treated, and subjected to finishing processes like pickling to achieve its final state.
This meticulous process ensures that every 310 seamless pipe meets the highest standards for performance and reliability in the most demanding applications.
