Metinox Overseas is one of the well-knownmanufacturers of Stainless Steel 321H Seamless Tubes which are applied since they are not subtle to intergranular corrosion after the heating process in the carbide precipitation series 425 Degree C - 850 Degree C. One of the disadvantages of a restraint with 321 Seamless Tubes is that titanium does not move across a large temper and therefore not recommended as welding usable. 321 Welded Tubes is the type that is to be used in the conditions where usage is in the range between high temper and low temperature of up to around 900 Degree C which is the range where a high potency, phase stability and scaling resistance is required. Stainless Steel 321H Seamless Tubes modification Modification of Stainless Steel 321 to create a higher carbon content of 321H to enhance the strength at high temperatures.
Titanium Welded Tubes Stainless steel 321H EFW Tubes was empirically designed to serve in the 1000 Degree F -1600 Degree F temp range specifically in intergranular attack in the un-stabilized alloy like Stainless Steel 304.
We have an extensive collection of tubes that meet the buyer's requirements and are offered at affordable prices. Additionally, because the item is manufactured using current technology and modern equipment, it possesses several effective qualities. They are heavy loads, rough construction, pitting resistance, and stress corrosion cracking resistance, oxidation resistance, high flexibility, high durability, anticorrosive etc.
ASME SA/ ASTM A 213/A269/A249 is the standard specification of Stainless Steel 321/321H Tubes. It has the dimensions of ASME, ASTM and API. Tubes sizes include 1/8inNB to 30inNB IN. The thickness of the tube is between 0.1mm and 1.2mm and the OD of the tube varies between 0.35mm and 6.35mm. The kind of tubes which are sold are seamless, ERW, fabricated, LSAW, welded etc. Its availability in forms is square, rounded, rectangle, hydraulic etc. It is offered in length in both full and half random or cut.
The Stainless Steel 321/321H Tubes are in the process of undergoing different tests to test its quality. These are PMI test, IGC test, flattening test, flairing test, hardness test etc. Moreover, it is also packed in wooden boxes, carton boxes, wooden crates, wooden pallets etc. to offer a high standard of safety in the process of shipping it to a greater distance.
Table of Contents
- Stainless Steel 321/321H Tube Specification
- Stainless Steel UNS S32100 / S32109 Tubes Equivalent Grades
- 321/321H Stainless Steel Tube Chemical Composition
- ASME SA213 SS TP321 / TP321H Tubes Mechanical Properties
- Outside Diameter, OD (in mm) & Wall Thickness, WT (in mm) of Stainless Steel 321 / 321H Tubes
- ASTM A213 / A269 Stainless Steel 321 / 321H Tubing Forms & Availability
- Stainless Steel 321 / 321H Tubing Standard Specifications
- Other Types of Stainless Steel 321/321H Tubes
Stainless Steel 321/321H Tube Specification
| Specifications | ASTM A213, A249, A269 / ASME SA213, SA249, SA269 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness Range | 0.3mm � 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| 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 |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| EN 10216-5 | EN 10216 321/321H Seamless Steel Tubes, EN 10216-5 1.4541 / 1.4878 Seamless Steel Tube for pressure purposes |
| EN 10217-7 | EN 10217 321/321H Welded Steel Tubes, Steel EN 10217-7 1.4541 / 1.4878 Welded Tube for pressure purposes |
Stainless Steel UNS S32100 / S32109 Tubes Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | EN | JIS |
| SS 321 | S32100 | 1.4541 | X6CrNiTi18-10 | SUS 321 |
| SS 321H | S32109 | 1.4878 | X12CrNiTi18-9 | SUS 321H |
321/321H Stainless Steel Tube Chemical Composition
| 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 |
ASME SA213 SS TP321 / TP321H Tubes Mechanical Properties
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| Psi � 75000, MPa � 515 | Psi � 30000, MPa � 205 | 35 % | 95 | 217 |
Outside Diameter, OD (in mm) & Wall Thickness, WT (in mm) of Stainless Steel 321 / 321H Tubes
| Product Description | Outside Diamter, OD (in mm) | Wall Thickness, WT (in mm)> |
| 321 / 321H Stainless Steel Round Tube | 6mm � 630mm | 0.5mm-30mm |
| 321 / 321H Stainless Steel Square Tube | 12.7mm* 12.7mm to 300mm* 300mm | 0.5mm-30mm |
| 321 / 321H Stainless Steel Rectangular Tube | 10*20mm to 100*200mm | 0.5mm-30mm |
| 321 / 321H Stainless Steel Colour Coated Tube | 6mm to 630mm | 0.5mm-30mm |
| 321 / 321H Stainless Steel Ornamental Tubes | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 321 / 321H Stainless Steel Electropolished Tubes | 12.7mm to 250mm | 0.5mm-30mm |
| 321 / 321H Stainless Steel Slot Round Tube | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 321 / 321H Stainless Steel Triangle Tube | 16mm to 85mm | 0.5mm-3.0mm |
| 321 / 321H Stainless Steel Hexagonal Tubes | 13mm to 85mm | 0.5mm-2.0mm |
| 321 / 321H Stainless Steel U Shaped Tube | 20mm to 200mm | 0.5mm-2.0mm |
| 321 / 321H Thin-Wall Stainless Steel Tubes | 22mm*0.7mm to 108mm*2.0mm | 0.5mm-2.0mm |
| 321 / 321H Inner/Outside Polished Stainless Steel Tubes | 12.5mm to 203.2mm | 1.0mm � 5mm |
| 321 / 321H Stainless Steel Seamless Tubes | 6mm to 430mm | 0.8mm � 30mm |
| 321 / 321H Stainless Steel Capillary Tubes | 0.28mm to 10mm | 0.08mm � 1.2mm |
ASTM A213 / A269 Stainless Steel 321 / 321H Tubing Forms & Availability
| Products | Size | |
| ASTM A213 TP321 / 321H SS Square Tube | ASTM A213 321 / 321H SS High Pressure Tubing | Sizes 3.35 mm OD To 101.6 mm OD |
| ASTM A213 TP321 / 321H SS Exhaust Tube | ASTM A269 TP321 / 321H Stainless Steel Flexible Tube | |
| ASTM A213 TP321 / 321H Stainless Instrumentation Tube | ASTM A269 TP321 / 321H SS Rectangular Tube | |
| ASTM A213 TP321 / 321H SS Round Tube | ASTM A269 TP321 / 321H SS Sanitary Tubing | |
| ASTM A249 TP321 / 321H Stainless Heat Exchanger Tubes | ASTM A213 TP321 / 321H Stainless U Shaped Tubing | |
| ASTM A269 TP321 / 321H SS Triangle Tubes | ASTM A213 TP321 / 321H Stainless Threaded Tube | |
| ASTM A213 TP321 / 321H Stainless Seamless Tube | ASTM A269 TP321 / 321H Stainless ERW Tubes | |
| ASTM A269 TP321 / 321H SS Welded Tubes | ASTM A269 TP321 / 321H SS Electric Resistance Welded Tubing | |
| ASTM A269 TP321 / 321H SS Coiled Tubing | ASTM A213 TP321 / 321H SS Structural Steel Furnace Tubing | |
Stainless Steel 321 / 321H Tubing Standard Specifications
| Spec. No. | Title | Scope |
| ASTM A 213 | Seamless Ferritic Stainless Steel and Austenitic Stainless Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes. | Pressure tubes, made from 16 grades of austenitic stainless steel and from 12 grades of ferritic Cr-Mo Alloy Steel. |
| ASTM A 249 | Welded Austenitic Stainless Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes. | Pressure tubes, made from austenitic stainless steels, (Types 304, 304H, 304L, 305, 309, 310, 316, 316H, 316L, 317, 321, 321H, 347, 347H, 348, 348H, and XM grades.) |
| ASTM A 268 | Seamless and Welded Ferritic Stainless Steel Tubing for General Service. | 15 grades of ferritic stainless steel tubing for general corrosion resistance and high temperature service. (Types 329, 405, 409, 410, 429, 430, 430Ti, 443, 446, XMs & others). |
| ASTM A 269 | Seamless and Welded Austenitic Stainless Steel Tubing for General Service. | 13 grades of austenitic stainless steel tubing for general corrosion-resisting and high-temperature service. (Types 304, 304L, 316, 316L, 317, 321, 347, 348 and XM grades). |
| ASTM A 270 | Seamless and Welded Austenitic Stainless Steel Sanitary Tubing. | Austenitic stainless steel tubing intended for use in the diary and food industry in sizes up to and including 4 in. in outside diameter. |
| ASTM A 511 | Seamless Stainless Steel Mechanical Tubing. | 27 grades are covered for mechanical applications. Primarily round tubing. |
| ASTM A 554 | Welded Stainless Steel Mechanical Tubing. | Nineteen grades are covered for mechanical applications. Rounds, squares, rectangles, and special shapes are included. |
| ASTM A 632 | Seamless and Welded Austenitic Stainless Steel Tubing for General Service. Small Diameter. | 9 grades of austenitic stainless steel tubing for general corrosion-resisting and high-temperature service. |
| ASTM A1016/A1016M | 321 / 321H Stainless Steel Tubes | 18a Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes |
| ASTM A778/A778M | Welded Austenitic Stainless Steel 321 / 321H Tubular Products | Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products |
| ASTM A688/A688M | Seamless and Welded Austenitic Stainless Steel 321 / 321H Feedwater Heater Tubes | Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes |
| ASTM A803/A803M | Seamless and Welded Ferritic Stainless Steel 321 / 321H Feedwater Heater Tubes | Standard Specification for Seamless and Welded Ferritic Stainless Steel Feedwater Heater Tubes |
| ASTM A1098/A1098M-18 | Welded Austenitic, Ferritic, Martensitic and Stainless Steel 321, 321H Boiler, Superheater, Condenser, and Heat Exchanger Tubes | Standard Specification for Welded Austenitic, Ferritic, Martensitic and Duplex Stainless Steel Boiler, Superheater, Condenser, and Heat Exchanger Tubes with Textured Surface(s) |
| ASTM A1012-10 | Seamless and Welded 321 / 321H Condenser and Heat Exchanger Tubes | Standard Specification for Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes With Integral Fins |
| ASTM F2257 | 321 / 321H Stainless Steel Small Diameter Tubing | Standard Specification for Wrought Seamless or Welded and Drawn 18 Chromium-14 Nickel-2.5 Molybdenum Stainless Steel Small Diameter Tubing for Surgical Implants (UNS S31673) |
| AMS 556 | Steel Tubing, Corrosion and Heat Resistant 18 Cr; 11 Ni; (Cb + Ta) (SAE 30321) Hydraulic. | Annealed type 321 hydraulic line tubing. Type 1-Seamless Type 2-Welded & Drawn |
| AMS 5557 | Steel Tubing, Corrosion and Heat Resistant 18 Cr; 11 Ni; Ti (SAE 30321)Hydraulic | Annealed type 321 hydraulic line tubing. Type 1-Seamless Type 2-Welded & Drawn |
| AMS 5558 | Steel Tubing, Welded, Corrosion and Heat Resistant 18 Cr; 11 Ni, (Cb + Ta)(SAE 30321) Thin Wall. | High pressure ducting, wall thickness 2% of O.D. or less. Weld bead controlled, X-ray. |
| AMS 5559 | Steel Tubing, Welded, Corrosion and Heat Resistant 18 Cr, 10 Ni, Ti, (SAE 30321) Thin Wall. | High pressure ducting, wall thickness 2% of O.D. or less. Weld bead controlled, X-ray. |
| AMS 5560 | Steel Tubing, Seamless Corrosion Resistant 19 Cr; 9 Ni (SAE 30321). | Annealed type 321 aircraft hydraulic fine tubing. (Not subject to high pressure). Structural. |
| AMS 5561 | Steel Tubing, Welded and Drawn Corrosion Resistant 21 Cr; 6 Ni; 9 Mn High Pressure Hydraulic. | For parts and assemblies such as fluid lines subject to high pressure and requiring corrosion resistance. 1/8 – 1/4 Hard. |
| AMS 5562 | Steel Tubing, Seamless Corrosion Resistant 21 Cr; 6 Ni; 9 Mn Annealed. | Parts and assemblies requiring both corrosion and heat resistance, and having higher strength than 18-8 types. |
| AMS 5565 | Steel Tubing, Welded, Corrosion Resistant 19 Cr; 6 Ni (SAE 30321). | Annealed type 321 aircraft hydraulic line tubing. (Not subject to high pressure), Structural. |
| AMS 5566 | Steel Tubing, Seamless or Welded Corrosion Resistant 19 Cr; 10 N (SAE 30321) High Pressure Hydraulic | Cold drawn type 321, high pressure, aircraft hydraulic line tubing. 1/8 hard. |
| Type 1óSeamless | ||
| Type 2óWelded & Drawn | ||
| AMS 5567 | Steel Tubing, Seamless or Welded Corrosion Resistant 19Cr; 10 Ni (SAE 30321) Hydraulic, Solution Treated. | Fluid lines subject to medium high pressures requiring corrosion resistance. Annealed.(1) Seamless (2) Welded & Drawn |
| AMS 5570 | Steel Tubing, Seamless Corrosion and Heat Resistant 18 Cr; 10 Ni; Ti (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when such parts are welded during fabrication. Requiring oxidation resistance up to approximately 1500?F, but useful at that temperature only when stresses are low. |
| AMS 5571 | Steel Tubing, Seamless Corrosion and Heat Resistant 18 Cr; 11 Ni; (Cb + Ta) (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when such parts are welded during fabrication. Requiring oxidation resistance up to approximately 1500?F, but useful at that temperature only when stresses are low. |
| AMS 5572 | Steel Tubing, Seamless Corrosion and Heat Resistant 25 Cr; 20 Ni (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when welded during fabrication, Requiring oxidation resistance up to approximately 2000?F, but useful at that temperature only when stresses are low. |
| AMS 5573 | Seamless Type 321 Annealed Structural | Parts & assemblies requirinq,,both corrosion and heat resistance up to 1600?F. |
| AMS 5574 | Seamless Type 321H Annealed Structural | Parts & assemblies requiring both corrosion and heat resistance up to 2000?F, especially welded assemblies. |
| AMS 5575 | Steel Tubing, Seamless Corrosion and Heat Resistant 18 Cr; 11 Ni; (Gb + Ta) (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when such parts are welded during fabrication. Requiring oxidation resistance up to approximately 1500?F, but useful at that temperature only when stresses are low. |
| AMS 5576 | Steel Tubing. Welded, Corrosion and Heat Resistant 18 Cr; 10 Ni; Ti (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when such parts are welded during fabrication. Requiring oxidation resistance up to approximately 1500?F, but useful at that temperature only when stresses are low. |
| AMS 5577 | Steel Tubing, Welded, Corrosion and Heat Resistant 25 Cr; 20 Ni; (SAE 30321). Annealed Structural. | Parts and assemblies requiring both corrosion and heat resistance especially when welded during fabrication. Requiring oxidation resistance up to approximately 2000?F, but useful at that temperature only when stresses are low. |
| AMS 5639 | Seamless Type 321 | Cold Finished Mechanical Tube Rockwell 90B max Hardness Corrosion Embrittlement Capability |
| AMS 5645 | Seamless Type 321 | Cold Finished Mechanical Tube Rockwell 90B max Hardness Corrosion Embrittlement Capability |
| AMS 5546 | Seamless Type 321 | Cold Finished Mechanical Tube Rockwell 90B max Hardness Corrosion Embrittlement Capability |
| AMS 5647 | Seamless Type 321H | Cold Finished Mechanical Tube Rockwell 90B max Hardness Corrosion Embrittlement Capability |
| AMS 5648 | Seamless Type 321 | Cold Finished Mechanical Tube Rockwell 90B max Hardness |
| MIL-T-5695 | Tubing, Steel, Corrosion Resistant, (321) Cold Drawn (1/2 or 1/4 Hard) Smls or W&D. | Intended for use in the fabrication of aircraft structural parts requiring a high degree of resistance to corrosion. |
| MIL-T-6737 | Tubing, Steel, Corrosion and Heat Resistant (18-8 Stabilized), Welded.Annealed. | Type 321 and 321H tubing intended for use in the manufactured exhaust-stacks, manifolds, blast tubes, ring collectors and similar applications where a weldable corrosion and heat resisting steel is required or for use at 8000 – 1500?F. |
| (T 321) | ||
| MIL-T-6845 | Tubing, Steel, Corrosion Resistant (321) Aerospace Vehicle Hydraulic System. 1/8 Hard, Seamless, Welded & Drawn. | Intended for use in high pressure hydraulic and pneumatic systems in which corrosion resistant materials are required. The tubing is not suitable for use in applications assembled by welding or brazing or exposed to temperatures higher than 800?F, because of impaired resistance to corrosion, where subsequent anneal not possible. |
| (T321) | ||
| MIL-T-8504 | Tubing, Steel, Corrosion Resistant (18-8) Annealed, Aircraft Hydraulic System. Seamless, Welded. | Intended for use in high pressure hydraulic and pneumatic systems in which corrosion resistant materials are required. This tubing is of lower strength and higher ductility than tubing to Specification MIL-T-6845. May be used to replace MIL-T-6845 tubing but heavier wall thicknesses must be used:Same qualifications regarding welding, brazing & temperature. |
| (T 321) | ||
| MIL-T-8506 | Tubing, Steel, Corrosion Resistant, (321) Annealed, Seamless, Welded. | Intended for use in the fabrication of aircraft parts requiring a high degree of resistance to corrosion. Not to be used in high pressure hydraulic control systems. |
| (T 321) | ||
| MILT 8606 | Tubing, Steal, Corrosion Resistant (18-8 Stabilized). Annealed. Seamless, Welded & Drawn. | Intended for use in applications which require a high degree of resistance to corrosion or to temperatures in the range of 800?F-1500?F. or in applications which involve welding. Suitble for use in tank-automotive equipment for hydraulic and mechanical applications. |
| (T 321) | ||
| (T 321H) | ||
| (T 321) | ||
| MlL-T-8808 | Tubing, Steel, Corrosion Resistant (l8-8 Stabilized), Aircraft Hydraulic Quality. Annealed, Seamless, Welded & Drawn. | Intended for use in high pressure hydraulic and pneumatic systems where corrosion and heat resistance are required and in which welding or brazing may be involved during fabrication. Resists oxidation at temperatures to 1200?F, but is useful at that temperature only when stresses are low. |
| (T 321) | ||
| (T 321H) | ||
| MIL-T4973 | Tubing, Steel, Corrosion Resistant, Aerospace Vehicle Hydraulic System. 1/8Hard. Seamless, Welded & Drawn. | Intended for use in high pressure hydraulic and pneumatic systems where corrosion and heat resistance are required and in which welding or brazing may be involved during fabrication. Suitable for use in temperatures to 1200?F, when stresses are low. |
| (T 321) | ||
| (T 321H) | ||
| (T 321) | ||
| (T 321H) | ||
| MIL-P-1144 | Pipe, Stainless Steel, (Corrosion Resisting). Seamless or Welded. Annealed. | Pipe is intended for high-temperature and hydraulic br other pressure service under general corrosive conditions. |
| (T 321) (T 321H) | ||
| (T 321) (T 321H) | ||
| (T 321) (T 321H) |
Other types of Stainless Steel 321/321H Tubes
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