| Customization: | Available |
|---|---|
| Type: | Stainless Steel Pipes |
| Standard: | ASTM, AISI, GB, JIS, EN |
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| WERKSTOFF NR.1.4541 SS 321 Specification | Stainless Steel 321, ASTM A312 TP 321 SS |
| DIN 1.4541 SS 321 Pipe | 321 Stainless Steel Pipe |
| SS 321 Seamless Pipe Size | 4 to 630mm W. T.: 0.5 to 50mm |
| 321L Stainless Steel Welded Pipe Size | 5.0 mm - 1219.2 mm |
| SS UNS S32103 EFW Pipe size | 5.0 mm - 1219.2 mm |
| ASTM A312 Stainless Steel Pipe Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| SA312 TP321 Pipe Schedule | SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| DIN 1.4541 SS 321 Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| 321l Stainless Steel Tube wall thickness | 0.020″ -0.220″, (special wall thicknesses available) |
| 321 Steel Length | Single Random, Double Random, Standard & Cut length Pipe & Tube |
| ASTM A312 TP 321 Stainless Steel Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| UNS S32100 Form | Round, Hydraulic, 'U' bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc |
| Stainless Steel 321 Type | Welded, Seamless, ERW, EFW, Fabricated Pipe, 'U' bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc |
| 321 Steel End | Plain End, Beveled End, Treaded Pipe |
| SS 321 Marking | All 321l Stainless Steel Pipe are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| ASTM A 358 SS 321 Application | Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube |
| ASTM A312 TP 321 SS Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| ASTM A 312 SS 321 Specialize in | Alloy 321 Large Diameter Pipe |
| WERKSTOFF NR.1.4541 SS 321 Capillary Tube | |
| SS TP321 Heat Exchanger & | |
| TP321 SS Condenser Tube | |
| SS TP321 Test Certificate | Manufacturer Test Certificate |
| Laboratory Test Certificate from Govt. Approved Lab. | |
| Under Third Party Inspection | |
| Manufacturers of 321 Stainless Steel Pipe | Baosteel Stainless Steel |
| Taigang Stainless Steel | |
| Qingshan Stainless Steel | |
| ATI of the United States | |
| Nippon Steel | |
| Posco of South Korea | |
| Marking | All 321 Stainless Steel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| 321/321H stainless steel tubing Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
Type 321 stainless steel is a remarkable austenitic steel that closely mirrors the attributes of Type 304, but with a higher titanium and carbon content. This enhanced composition grants it superior corrosion and oxidation resistance, alongside unparalleled toughness even at cryogenic temperatures. The inclusion of titanium delivers various appealing benefits: it prevents detrimental carbide precipitation in the heat-affected zone (HAZ) of welds, offers substantial protection against intergranular corrosion, and mitigates embrittlement in susceptible weld areas. Type 321H stainless steel shines in applications subjected to carbide precipitation temperatures (800°F-1500°F) and corrosive environments. Compared to 304 stainless steel, 321 contains more nickel and is stabilized with titanium, which interacts preferentially with carbon, preventing the formation of chromium carbides at grain boundaries. This preserves corrosion resistance by minimizing chromium consumption near grain borders during critical temperature exposure. The grade responds well to cold working, is easily weldable, and rarely necessitates post-weld annealing to maintain its exceptional performance across various corrosive settings.
Our forming capabilities include cutting-edge extrusion and cold working assets for tube and pipe products. We boast one of the world's largest pilger mills and employ unique hydroforming processes to manufacture precision fittings.
As a vertically integrated manufacturer, we offer a comprehensive one-stop solution. We handle entire projects or specific machining jobs with expertise in Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and Specialized Services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun possesses the world's most extensive pipe extrusion capabilities, enabling us to produce the industry's longest lengths and largest diameter pipes.
Chemical Composition of 321 Stainless Steel Pipe
| Composition 321/321H Pipe and Tubing | ||
| Grade | 321 | 321H |
| UNS Designation | S32100 | S32109 |
| Carbon (C) Max. | 0.08 | 0.04-0.10 |
| Manganese (Mn) Max. | 2 | 2 |
| Phosphorous (P) Max. | 0.04 | 0.04 |
| *** (S) Max. | 0.03 | 0.03 |
| Silicon (Si) Max. | 0.75 | 0.75 |
| Chromium (Cr) | 17.0-20.0 | 17.0-20.0 |
| Nickel (Ni) | 9.0-12.0 | 9.0-12.0 |
| Molybdenum (Mo) | - | - |
| Nitrogen (N) | 0.1 Max. | 0.1 Max. |
| Iron (Fe) | Bal. | Bal. |
| Other Elements | Ti=5(C) to 0.70% | Ti=4(C) to 0.60% |
| Physical Properties of 321/321H Alloys in the Annealed Condition at -20°F to +100°F | ||||||||||||||
| Tensile Strength | Yield Strength | |||||||||||||
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 inches (min.) % | Grain Size Req. | Maximum Harndess | Modulus of Elasticity (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ft2-h-°F) |
| 321 | S32100 | - | 75,000 | 515 | - | 30,000 | 205 | - | 35 | - | - | 29 | 9.2 | - |
| 321H | S32109 | - | 75,000 | 515 | - | 30,000 | 205 | - | 35 | 7 or coarser | - | 29 | 9.2 | - |
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
ASTM/ASTE : UNS S32100
Alloy 321/H can be easily welded and processed using standard shop fabrication practices.
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