
321H Seamless Tubes Manufacturer, View Weight Chart of Alloy 321 Boiler Tube
Stainless Steel 321 / 321H Tube / Tubing / U Tube is made up of a chromium nickel austenitic stainless steel that is stabilized with titanium. The added titanium element provides extra strength and intergranular resistance to these tubes so that they could operate at up to 900 degrees Celsius and could be welded in the range of 425-850 degrees Celsius with less carbide precipitation. The 321 Stainless steel tube comprises of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel and nitrogen. Nitrogen is absent in the 321H high carbon version. The added titanium depends on the carbon and nitrogen contents of the material. The 321H Seamless Tubes have 515MPa minimum tensile strength and 205MPa minimum yield strength. They also have high brinell hardness of 217. These properties make them good for capillary tubing. The Stainless Steel 321 Capillary tube has very small diameters but can operate with high pressure and temperature conditions.

321 stainless steel seamless tube

SS 321H Capillary Tubes

Alloy 321 Boiler Tube
Check Price List of 321 Stainless steel tube, Most trusted SS 321H Capillary Tubes Stockist
The capillary tubes are used in thermal applications. There are different standards and specifications such as the din 1.4541 tubing. Each different specification and standard governs certain mechanical properties and dimensions. The SS 321H U tube is a type of tubes used in heat exchangers. Since heat exchangers use the U shape tubes, these are sometimes called the heat exchanger tubes as well. The tubes can range from ½ inches to 100 inches in nominal bore sizes. The electric fusion welded tubes go up to 100 inches while the other types are usually up to 24 inches. The Alloy 321 Boiler tube is used in boilers, super heater elements and in condenser units. We supply all different specifications and standards of the 321 material grade tubes such as the ASTM A484 / ASME SA484 AISI 321. Please contact us to know more about our products.
Table of Content
- Material Specification of Stainless Steel 321 / 321H Tube
- Size Range of ASTM A249 TP 321 / 321H Tubing
- Check Stock of SS 321 / 321H Tubing
- List of 321 / 321H Stainless Steel Welded Tube Types
- Price List of A249 TP 321 / 321H High Pressure Tube
- Composition Standard of 321 / 321H SS Seamless Tube
- Mechanical Analysis of ASME SA249 TP 321 / 321H Tubes
- UNS S32100 Electropolish Tube Equivalent Material
Material Specification of Stainless Steel 321 / 321H Tube
Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
Type | Seamless / ERW / Welded / Fabricated / CDW |
Form | Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
Length | Single Random, Double Random & Required Length |
End | Plain End, Beveled End, Treaded. |
Size Range of ASTM A249 TP 321 / 321H Tubing
- ASME SA249 TP 321 ERW Tubes : 1/2″ NB – 24″ NB
- 321H Stainless Steel Seamless Pipe : 1/2″ NB – 16″ NB
- UNS S32100 EFW Pipe : 6″ NB – 100″ NB
- Stainless Steel 1.4541 Tubes : 1/8″NB TO 30″NB IN
Best Quality Stainless Steel 321 Capillary tube Supplier, Top-notch stockist of din 1.4541 tubing.
Check Stock of SS 321 / 321H Tubing
321 SS Electropolished Tubing | UNS S32100 Rectangular Tube |
SS A249 TP321H Square Tubing | Stainless Steel 1.4541 Polished Tube |
ASME SA249 TP 321 Tubing | Stainless Steel 321 Fabricated Tube |
UNS S32100 12mm Tube | ASME SA249 TP 321 Seamless Tubing |
321H Stainless Steel High Pressure Tube | ASTM A249 TP 321H Thin Wall Tubing |
Stainless Steel 1.4541 Electropolished Tubes | ASME SA249 TP 321 Cold Drawn Seamless Tube |
Stainless Steel 321 Hydraulic Tubing | ASTM A249 TP 321H Coiled Tube |
321 SS ERW Tube | 321H Stainless Steel Electropolished Tube |
UNS S32100 Rectangular Tubing | Stainless Steel 1.4541 CDW Tube |
ASME SA249 TP 321 Electropolish Tube | SS A249 TP321H Capillary Tubing |
321H Stainless Steel Small Diameter Tubing | 321 SS ERW Tubing |
Stainless Steel 1.4541 High Pressure Tube | Stainless Steel 321 Tubing |
ASTM A249 TP 321H Tube | SS A249 TP321H Round Tube |
ASME SA249 TP 321 EFW Tube | ASTM A249 TP 321H Finned Tube |
Suppliers and Stockists of SS 321H U tube. Distributing globally Alloy 321 Boiler tube at best prices. ASTM A484 / ASME SA484 AISI 321 Tubing are available in different sizes to fulfill any requirement
List of 321 / 321H Stainless Steel Welded Tube Types




Price List of A249 TP 321 / 321H High Pressure Tube
Price list of Stainless Steel 321 Tube | ASTM A249 TP 321H Tube Price in INR | ASTM A249 TP 321H Tube Price in USD | ASTM A249 TP 321H Tube Price in UAE Dirham |
---|---|---|---|
S.S. PIPE (GR. 321H) SIZE: 2 X 2 | INR 16,591 | $218.82 | 803.73 UAE Dirham |
Get a Quote for Alloy 321H EFW Tubing, Check Availability of ASTM A312 TP 321H Welded Tube. Top-notch Stockholder of ASTM A213 TP 321H ERW Tube
Composition Standard of 321 / 321H SS Seamless Tube
Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) - 0.70 max |
SS 321H | 0.04 - 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 4(C+N) - 0.70 max |
Mechanical Analysis of ASME SA249 TP 321 / 321H Tubes
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1457 °C (2650 °F) | Psi - 75000 , MPa - 515 | Psi - 30000 , MPa - 205 | 35 % |
UNS S32100 Electropolish Tube Equivalent Material
STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |