ASTM A213 / ASME SA213 TP321 / 1.4541 / S32100 STAINLESS STEEL SEAMLESS TUBE FOR BOILER
Overview:
The seamless heat exchanger tubes made of ASTM A213 TP321 are mainly used at elevated temperatures with excellent corrosion resistance. Grade TP321 is a stabilized stainless steel, in which titanium is added to avert sensitization to intergranular corrosion. The tubes shall be solutioning heat treated at a temperature between 1900°F [1040°C] and 1950°F [1065°C], followed by a quench in cold water. After all fabrication processes are completed, a stabilizing heat treatment is sometimes required at the temperature of 1650°F [900°C] for 2 to 4 hours. The purpose of the stabilizing heat treatment is to remove carbon from solution at temperatures where titanium carbides are stable but chromium carbides are not. Such treatment prevent the formation of chromium carbide when the steel is exposed to lower temperatures between 800°F [425°C] and 1500°F [815°C]. In this way, ASTM A213 TP321 seamless tubes can be used for applications in long-term exposure at sensitization temperatures.
ASTM A213 Stainless Steel 321 Seamless Tube is generally considered to have comparable weldability to 304 and 304L stainless with the main difference being the titanium addition which reduces or prevents carbide precipitation during welding. ASTM A213 Stainless Steel 321 Cold Drawn Tube and ASTM A213 Stainless Steel 321 Heat Exchanger Tube primarily used in applications that involve continuous and intermittent service temperatures within the carbide precipitation range of 800°-1500°F.
We supply ASTM A213 SS 321 Tubing that are being designed as per the national and international standard quality of raw materials.ASTM A213 Grade 321 stainless steel tube is the most widely used commercial grade of stainless steel supplied into numerous industry sectors which also referred as WNR 1.4541 Seamless Tube. ASTM A213 321 Seamless Condenser Tubes has oxidation resistant to 1600°F.
Specification:
| Specification | ASTM A-213 & Its equivalent ASME, DIN & EN Standard. |
| Grades | 321, 321H |
| Type | Seamless Ferritic and Austenitic Boiler, Superheater, and Heat-Exchanger Tubes |
| Outer Diameter Size | 1/4” OD, NB to 3” OD, NB sizes |
| Thickness | 1mm to 12mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10 |
| Length | Up to 6 meters, custom cut lengths |
| Ends | No.1 Pickled Finish, No.4 finish, BA Finish, Electropolished Seamless Tubes |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiographic Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| Dimension | All Pipes & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
Chemical Composition:
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni | Ti |
| 321 | S32100 | 0.08 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 17.0-19.0 | 9.0-12.0 | 5(C+N)-0.07 |
| 321H | S32109 | 0.04-0.10 | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 17.0-19.0 | 9.0-12.0 | 4(C+N)-0.07 |
Mechanical Properties:
| Grade | Tensile Strength, min, ksi (MPa) | Yield Strength, min, ksi (MPa) | Elongation in 2 in. or 50mm, min (%) | Hardness | Solutioning Temperature, min, °F(°C) |
| Rockwell | Brinell/Vickers |
| 321 | 75(515) | 30(205) | 35 | 90HRB | 192HBW/200HV | 1900(1040) |
| 321H | 75(515) | 30(205) | 35 | 90HRB | 192HBW/200HV | 2000(1090) |
Equivalent Grades:
| Standard | WERKSTOFF NR. | Unified Numbering System | European Standards | AFNOR | British Standards | GOST | Japanese Standards |
| 321 | 1.4541 | S32100 | X6CrNiTi18-10 | - | 321S31 | 08KH18N10T | SUS 321 |
| 321H | 1.4878 | S32109 | X8CrNiTi18-10 | - | 321S51 | 12KH18N10T | SUS 321H |
Applications:
1.Food preparation equipment particularly in chloride environments.
2.Laboratory benches & equipment.
3.Coastal architectural panelling, railings & trim.
4.Boat fittings.
5.Chemical containers, including for transport.
6.Heat Exchangers.
7.Woven or welded screens for mining, quarrying & water filtration.
8.Threaded fasteners.
9.Springs.
Product Tags:
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ASME SA213 TP321 / 1.4541 / S32100 Stainless Steel Seamless Boiler Tube HT Provided Images
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