| 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 an advanced austenitic steel, closely related to Type 304 but with elevated titanium and carbon content. This grade offers superior corrosion and oxidation resistance alongside exceptional toughness, even at cryogenic temperatures. Its high resistance to oxidation and corrosion is enhanced by titanium, which prevents detrimental carbide precipitation in the heat-affected zone (HAZ) of the weld. Additionally, titanium safeguards against intergranular corrosion, mitigating embrittlement in vulnerable weld areas. Commonly utilized in applications exposed to carbide precipitation temperatures (800°F-1500°F) and corrosive environments, 321 stainless steel maintains its corrosion resistance due to nickel and titanium stabilization, which prevents chromium carbide formation at grain boundaries. This ensures minimal chromium depletion near critical temperature exposures. It hardens effectively with cold working, is easily weldable, and rarely necessitates post-weld annealing, making it versatile for various corrosive conditions.
Our forming capabilities are unparalleled, featuring cutting-edge extrusion and cold working technologies for tube and pipe production. We boast one of the world's largest pilger mills and utilize unique hydroforming processes to craft superior fittings.
As a vertically integrated manufacturer, we serve as your ultimate one-stop shop. We handle everything from entire project management to specialized machining jobs. Our comprehensive services include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
Featuring vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun offers the industry's most comprehensive pipe extrusion capabilities. This enables us to produce the longest lengths and largest diameter pipes available.
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 effortlessly welded and processed using standard shop fabrication practices.
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