ASTM A312 TP310S stainless steel seamless heat exchanger tubes
310S stainless steel seamless heat exchanger tubes
310S stainless steel seamless tubing is used in heat exchangers due to its excellent high-temperature strength, resistance to oxidation and corrosion up to 1100°C (2012°F), and good weldability due to its low carbon content. These heat-resistant austenitic tubes are made from high-chromium and high-nickel alloys that form a protective oxide layer at high temperatures. Manufactured to ASTM A312 standards, they are ideal for harsh operating conditions in heat exchangers, furnaces, and petrochemical applications, where durability and reliability are critical.
What are 310 stainless steel used for?
310 stainless steel plate is often used in harsh, high-temperature environments where both heat resistance and corrosion resistance are required. Some common applications for 310 stainless steel plate include heat exchangers, furnace components, refractory anchors, power plants, and chemical processing equipment.
ASTM A312 TP310S is a highly important high-alloy, austenitic, heat-resistant stainless steel pipe, renowned for its excellent resistance to high-temperature oxidation and good corrosion resistance. It is widely used in various oxidizing environments. ASTM A312 standard requirements allow for both seamless and welded pipe production. Seamless pipe is more commonly used for high-temperature and high-pressure service and covers a wide range of nominal pipe sizes. Regarding heat treatment, ASTM A312 stainless steel pipe is typically supplied in the solution annealed condition (heating to ≥1040°C followed by rapid cooling) to dissolve carbides, achieve a uniform austenitic structure, optimize corrosion resistance, and relieve stress.
ASTM A312 TP310S Stainless Steel Seamless Pipe Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 310S | min. | – | – | – | – | – | 24.0 | – | 19.0 | – |
| max. | 0.08 | 2.00 | 1.50 | 0.045 | 0.030 | 26.0 | 22.0 | |||
The core of the TP310S seamless stainless steel pipe's compositional design lies in high chromium and nickel. High chromium imparts top-tier resistance to high-temperature oxidation and spalling, and also offers exceptionally high resistance to high-temperature corrosion in high-sulfur environments. This is primarily due to the chromium's ability to form a dense and stable protective chromium oxide layer at high temperatures. The high nickel content imparts a stable austenitic structure to the TP310S seamless stainless steel pipe, preventing harmful phase transformations and exhibiting excellent resistance to reducing acid corrosion. The pipe maintains excellent ductility and creep resistance at high temperatures, while also improving its carburization resistance.
Equivalent Grades of 310S
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 310S | S31008 | 310S16 | - | 1.4845 | X8CrNi25-21 | 2361 | SUS 310S |
ASTM A312 TP310S Stainless Steel Seamless Pipe Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| TP310S | 515 | 205 | 40 | 95 | 217 |
ASTM A312 TP310S Stainless Steel Seamless Pipe Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 310S | 7750 | 200 | 15.9 | 16.2 | 17.0 | 14.2 | 18.7 | 500 | 720 |
Key Features of 310S Stainless Steel Seamless Heat Exchanger Tubes
High-Temperature Strength: Maintains mechanical strength at extreme temperatures.
Oxidation Resistance: Forms a protective oxide layer at high temperatures, preventing scaling.
Corrosion Resistance: Provides excellent resistance in both harsh and mildly corrosive environments.
Low Carbon Content: The "S" in 310S indicates a low-carbon variant, which enhances weldability and minimizes carbide precipitation.
Creep Resistance: Designed to resist deformation under long-term high-temperature stress.
Applications of 310S Stainless Steel Seamless Heat Exchanger Tubes
Heat exchangers: Primarily used due to its excellent heat and oxidation resistance.
Industrial furnaces: Used in the manufacture of components such as pipe racks and refractory anchors.
Petrochemical Industry: Suitable for piping in harsh, high-temperature chemical environments.
Boilers and chemical processing equipment: Suitable for high-temperature and corrosive environments.
Gnee Steel specializes in the production and sale of a wide range of stainless steel products, including 304, 316, 321, 904, 904L, 2205 Duplex, 2205 Duplex, and 316L stainless steel. Gnee Steel's products are widely used in the kitchen, aerospace, chemical, power, automotive, and nuclear energy sectors. We also provide custom stainless steel solutions tailored to customer needs. For stainless steel pricing or custom alloy solutions, please email ru@gneesteelgroup.com for a quote.
