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310S Stainless Steel Seamless Pipe for High Temperature Applications

Place of Origin China
Brand Name DELTA
Certification ISO
Model Number 310S / 1.4845
Minimum Order Quantity 500 kgs
Price 6-10USD/Kg
Packaging Details standard packing for export
Delivery Time 5 - 12 days based on the quantity
Payment Terms L/C, T/T, Western Union
Supply Ability 3 Ton per week

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Product Details
Products Stainless Steel Seamless Pipe Grade 310S / 1.4845
Diameter DN10 - DN400 Length 6m Or Custom Cutting Any Length As Request
Standard ASTM EN Service Cutting
Loading Port Shanghai Port Thickness 4.0 - 50.0mm
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310S stainless steel seamless pipe

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Product Description

Heat Resistant 310S / 1.4845 Stainless Steel Seamless Pipe for Boiler and Heat Exchangers

 

Products Specification

 

Products Name 310S Stainless Steel Seamless Pipe

Grade:
304 304L 309S 310S 314 316L 316Ti 321 329 347H 410 2205 2507 S32760 904L 254SMO and equal grade in GB JIS EN DIN Standard
Standards: ASTM A213M-94b ASTM A249M-94a ASTM A269-94a
ASTM A312M-94b,ect.
DIN 17456-85 DIN 17458-85 DIN 17459-92.ect
JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect.
GB13296-1991 GB14975-2002 GB14976-2002,ect.
Size: ND5 - DN400
Length: 6m length or cutting any length as request
Applications: fluid and gas transport, structure , boiler, heat exchanger, super heater

 

Introduction to 310S Stainless Steel Tubing

 

310S stainless steel tubing is a high-alloy austenitic stainless steel specifically designed for exceptional resistance to oxidation (scaling) and corrosion at elevated temperatures. It is the low-carbon version of the basic 310 alloy, which significantly enhances its suitability for high-temperature applications by minimizing carbide precipitation during welding or exposure in the critical temperature range (800°F - 1500°F / 427°C - 816°C).

 

Key Parameters & Chemical Composition:

  • Common Grades: UNS S31008, AISI 310S, EN 1.4845

  • Chemical Composition (Typical Weight %):

    • Carbon (C): ≤ 0.08% (Low carbon for improved weldability & high-temp stability)

    • Chromium (Cr): 24.0 - 26.0% (Provides primary oxidation resistance)

    • Nickel (Ni): 19.0 - 22.0% (Stabilizes austenitic structure, enhances ductility & corrosion resistance)

    • Manganese (Mn): ≤ 2.00%

    • Silicon (Si): ≤ 1.50%

    • Phosphorus (P): ≤ 0.045%

    • Sulfur (S): ≤ 0.030%

    • Iron (Fe): Balance

  • Density: 7.98 g/cm³ (0.288 lb/in³)

  • Melting Point: ~1400°C - 1450°C (2550°F - 2640°F)

  • Continuous Service Temperature: Up to 1150°C (2100°F) in oxidizing atmospheres. Intermittent use up to 1035°C (1900°F).

  • Thermal Expansion: Relatively high (comparable to other austenitics like 304), ~16-18 μm/m·°C (20-100°C).

  • Thermal Conductivity: ~14 W/m·K (at 100°C).

  • Electrical Resistivity: ~0.85 μΩ·m.

  • Magnetic Properties: Essentially non-magnetic (austenitic structure).

Common Standards & Specifications:

 

310S tubing is manufactured to meet various international standards depending on dimensions, tolerances, testing, and intended use. Key standards include:

  • ASTM (American Society for Testing and Materials):

    • A213/A213M: Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.

    • A269/A269M: Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service.

    • A312/A312M: Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes. (Often covers larger diameters/pipes).

    • A789/A789M: Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service.

  • ASME (American Society of Mechanical Engineers): SA213, SA269, SA312, SA789 (Often identical to ASTM specs but adopted for Boiler & Pressure Vessel Code use).

  • EN (European Norm):

    • EN 10216-5: Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes.

    • EN 10296-2: Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel.

  • DIN (Deutsches Institut für Normung): DIN 17458 (Seamless circular tubes), DIN 17456 (Welded circular tubes).

  • JIS (Japanese Industrial Standards): JIS G 3463 (Stainless steel boiler and heat exchanger tubes), JIS G 3459 (Stainless steel pipes).

  • GOST (Russian Standards): GOST 9941 (Seamless hot-deformed tubes), GOST 11068 (Welded tubes).

Key Advantages:

  1. Outstanding High-Temperature Oxidation Resistance: The high chromium (Cr) and nickel (Ni) content forms a stable, protective chromium oxide (Cr₂O₃) scale, preventing further oxidation even under severe cyclic heating conditions up to 1150°C (2100°F).

  2. Excellent Carburization Resistance: Performs well in carburizing atmospheres compared to lower alloyed stainless steels.

  3. Good Sulfidation Resistance: Offers reasonable resistance to sulfur-containing atmospheres at high temperatures.

  4. Good Creep & Rupture Strength: Maintains strength better than standard austenitic grades (like 304/316) at sustained high temperatures.

  5. Corrosion Resistance: Excellent general corrosion resistance in many aqueous environments (similar to 304/304L), and superior pitting/crevice corrosion resistance compared to 304 due to higher Cr & Ni. Resists nitric acid well.

  6. Low Carbon Content (310S): Minimizes sensitization (chromium carbide precipitation at grain boundaries) during welding or high-temperature exposure, preventing intergranular corrosion and maintaining ductility. This is the key difference vs. 310.

  7. Formability & Weldability: Good formability and weldability (using standard austenitic procedures like TIG, MIG, SAW), though its high strength can require more force for forming. Post-weld annealing is generally not required due to low carbon content.

Typical Packaging:

 

Packaging aims to protect the tubing surface from damage, scratching, and corrosion during handling, storage, and transport. Common methods include:

  1. Bundling: Tubes are securely strapped together (plastic or steel bands) into bundles.

  2. End Protection: Plastic or metal end caps are often fitted to protect tube ends and threads (if present).

  3. Wrapping: Bundles may be wrapped in:

    • Waterproof Paper / VCI Paper: Protects against moisture and provides basic physical protection. VCI (Vapor Corrosion Inhibitor) paper releases corrosion-inhibiting vapors.

    • Plastic Shrink Wrap / Polyethylene Film: Provides a moisture barrier and good physical protection.

    • Hessian / Burlap: Sometimes used over wrap for additional abrasion resistance (less common now).

  4. Wooden Crates / Pallets: Bundles are placed on sturdy wooden pallets or enclosed within wooden crates for heavy loads, long-term storage, or demanding transport (especially sea freight). Wood must often comply with ISPM 15 for international shipping.

  5. Identification: Each bundle or crate is clearly labeled with material grade (310S), size, length, heat number, quantity, standard, manufacturer, and other relevant order information.

Primary Applications:

 

310S tubing excels in environments involving high temperatures and corrosive atmospheres:

 

  1. Furnace Components: Radiant tubes, muffles, retorts, combustion tubes, thermowells, burner nozzles, furnace conveyors, annealing covers.

  2. Heat Exchangers & Boilers: Tubing for superheaters, reheaters, heat recovery systems, and other components in high-temperature, corrosive service (especially where oxidation resistance is paramount).

  3. Chemical & Petrochemical Processing: Tubing in reactors, reformers, crackers, and piping systems handling hot corrosive gases, acids (like nitric), and catalysts.

  4. Power Generation: Boiler tubes, superheater tubes, and other high-temperature components in fossil fuel and waste-to-energy plants.

  5. Heat Treating Equipment: Fixtures, baskets, trays, and furnace internals exposed to repeated high temperatures.

  6. Aerospace: Certain high-temperature exhaust components and engine parts.

  7. Food Processing: Equipment requiring high-temperature sterilization and good corrosion resistance.

  8. Kilns & Incinerators: Structural components and tubing exposed to high heat and combustion gases.

 

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