ASTM A249 TP321 Stainless Steel Welded Tube For Heat Exchanger
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ASTM A249 TP321 is the standard specification for welded austenitic stainless steel tubes intended for high-temperature service. These tubes are commonly used in heat exchangers, boilers, and other high-temperature applications.
GNEE supplies ASTM A249 TP321 stainless steel welded pipes manufactured from Grade 321 stainless steel, a stabilized austenitic stainless steel alloyed with titanium. This grade offers outstanding corrosion resistance across various corrosive environments and can withstand temperatures up to 900°C (1652°F) without losing its mechanical properties. Welded pipes produced in accordance with the ASTM A249 specification are typically employed in high-temperature and corrosive environments, making them highly suitable for demanding applications in chemical processing, oil and gas, and power generation.
Stainless Steel 321 SA 249 Tubing Specification
| Outside diameter | 1/8"-5" |
| Thickness | 0.4 - 6 mm |
| Standard Specification | SA 249 321 SS Welded Superheater, Condenser, Hydraulic, Boiler and Heat-Exchanger Tubes |
| Forms | Round, Coiled, Straight, "U" Tube, Honed Tubes, Pan Cake Coils |
| Manufacturing Type | ERW / Welded / CDW / CDS / DOM / Fabricated / CEW / 100% X Ray Welded |
| Delivery Condition | Annealed and Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF |
| Surface Finish | BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G, 320G, 400G Satin/ Hairline, 400G, 500G, 600G or 800G Mirror finish JIS SA 249 TP 321 Tubing or Custom Finish as per customer's specification |
| Temperature range | 950-1120°C |
| Standard | SUS, JIS, AISI, ASTM, GB, DIN, EN |
equivalent Material:
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| SS321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
Chemical Composition:
| C | SI | MN | P | S | CR | NI | TI | N |
| 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 17.0/19.0 | 9.0/12.0 | 5 X C Min – 0.70 Max | 0.10 |
Mechanical Properties:
| Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| 515 | 205 | 40 | 95 | 217 |
ASTM A249 TP321 Stainless Steel Welded Tube Application
Boiler and Pressure Vessel Industry: Used in the manufacture of boiler superheaters, reheaters, economizers, and evaporator tubes; heat exchange tube bundles in various pressure vessels.
Petrochemical Industry: Heat exchangers, condensers, and piping systems in refineries; process piping used to handle corrosive media.
Food and Pharmaceutical Industry: Pipelines and heat exchange equipment requiring extremely high cleanliness requirements.
Thermal and Nuclear Power Industry: High-pressure feedwater heaters and condensers in power plants.
GNEE specializes in the production of high-quality stainless steel welded pipes, offering 304, 321, and 316L grades. We offer a comprehensive range of specifications, covering both large and small diameters. Our welded steel pipes are made from high-quality materials and undergo rigorous manufacturing processes, ensuring consistent and reliable quality. Please contact us for a quote! Email: info@gneestainless.com
| Value Added Services |
Cutting Beveling Threading Polishing (Electro & Commercial) Draw & Expansion as per required Size & Length Destructive and Non Destructive Ultrasonic Testing Annealed & Pickled Bending |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
| Technique | ASTM A249 321 SS Cold drawn, Cold rolled, Hot rolled, Extrusion Tube |
Packaging and Delivery
Packaging: We use moisture-proof and shock-resistant packaging, and use wooden pallets or plastic wrap for safe transportation.
Delivery Time: Standard delivery time for in-stock products is 7-15 days; custom orders are 20-30 days.
