Customization: | Available |
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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 premium austenitic steel, sharing many properties with Type 304 but with enhanced titanium and carbon content. This superior material offers exceptional corrosion and oxidation resistance, along with remarkable toughness, even in cryogenic conditions. Titanium in 321 stainless steel prevents harmful carbide precipitation in the heat-affected zone (HAZ) of the weld, offers partial protection against intergranular corrosion, and reduces embrittlement in high-risk areas of the weld. Type 321H is ideal for applications where parts are heated to carbide precipitation temperatures (800°F-1500°F) and exposed to corrosive atmospheres. Comparable to 304 stainless steel but with more nickel and titanium stabilization, 321 stainless steel ensures maintained corrosion resistance by preventing chromium carbide formation at grain boundaries. This grade responds excellently to cold working, is easily weldable, and rarely requires post-weld annealing, making it perfect for a variety of corrosive environments.
Our state-of-the-art forming capabilities include advanced extrusion and cold working techniques for producing impeccable tube and pipe products. We boast one of the world's largest pilger mills and utilize unique hydroforming processes to create precision fittings.
As a vertically integrated manufacturer, we provide a one-stop solution capable of handling entire projects or specific machining tasks. Our extensive services include: Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and Specialized Services.
Equipped with both 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 and largest diameter pipes available.
Chemical Composition of 321 Stainless Steel Pipe: Our 321 Stainless Steel Welded Pipe, conforming to ASTM A312 standards, is meticulously crafted with a unique blend of chromium, nickel, and titanium. This specific composition ensures superior resistance against corrosion, making it ideal for demanding aerospace applications.
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.