| 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, an austenitic alloy, mirrors the exceptional qualities of Type 304 but surpasses it with increased titanium and carbon content. This advantage provides metal fabricators with ultimate corrosion and oxidation resistance, alongside superior toughness even in cryogenic conditions. How does titanium enhance 321 stainless steel? It prevents detrimental carbide precipitation in the weld's heat affected zone (HAZ), offers partial defense against intergranular corrosion, and reduces embrittlement in high-stress weld areas. The 321H variant is ideal for components subjected to carbide precipitation temperatures (800°F-1500°F) in corrosive environments. While sharing similarities with 304 stainless steel, 321 contains more nickel and is stabilized with titanium, which prefers carbon interaction, preventing chromium carbide formation at grain boundaries. This preservation of chromium maintains corrosion resistance, even under critical temperatures. Known for hardening well with cold working, 321 stainless steel is effortlessly weldable, often eliminating the need for post-weld annealing, ensuring its remarkable performance in various corrosive settings.
Our forming capabilities encompass cutting-edge extrusion and cold working assets, one of the globe's largest pilger mills, and innovative hydroforming processes for crafting exceptional tube and pipe products.
As a vertically integrated manufacturer, we provide a comprehensive one-stop solution, capable of managing entire projects or specific machining tasks. Our services include Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and Specialized Services.
Daxun boasts the most extensive pipe extrusion capabilities globally, with vertical and horizontal presses ranging from 12,000 to 35,000 tons. This allows us to produce the longest lengths and largest diameter pipes in the industry.
Chemical composition of 321 stainless steel pipe: The 321 stainless steel pipe boasts a superior chemical composition that brings together elements like chromium, nickel, and titanium, imparting exceptional durability and resistance to corrosion.
| 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 is easily weldable and processable by standard shop fabrication methods.
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