The item
321 seamless Tubes with an outside diameter of 3.1 mm and a wall thickness of 0.9 mm. 304 stabilised with titanium. Resists sensitisation in the 425–815 degrees C range.
321 Seamless TubesIn stock
321 seamless tubes
OD 3.1 mm × 0.9 mm wall
This is a size we hold rather than one we have to roll. 304 stabilised with titanium. Resists sensitisation in the 425–815 degrees C range. Supplied with a mill test certificate to EN 10204 3.1 as standard.
OD 3.1 mm × 0.9 mm wallUNS S32100 / S32109EN 1.4541 / 1.4940HSN 7304
Properties
Austenitic- PREN
- 19
- Relative cost
- 1.30×
- Max service temp
- 900 °C
- Magnetic
- No
- Weldability
- Excellent
- Machinability
- Fair
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
01Product description
321 stainless steel seamless Tubes, OD 3.1 mm × 0.9 mm wall: stockist and supplier in Mumbai
Rajgranth Metal & Alloys stocks and supplies 321 seamless Tubes, OD 3.1 mm × 0.9 mm wall from Mumbai, with the material, tests and documentation covered by our ISO 9001:2015 quality system. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.
Grade and designations
Stainless Steel 321 and 321H, designated UNS S32100 / S32109, EN 1.4541 / 1.4940, AISI 321 / 321H, JIS SUS321 / SUS321H, GB S32168 / S32169 and Werkstoff X6CrNiTi18-10 / X7CrNiTi18-10.
Standards and finishes
Standards include ASTM A213 / ASME SA-213, ASTM A269, ASTM A312 / ASME SA-312, ASTM A376 / ASME SA-376, ASTM A789 / ASME SA-789, ASTM A790 / ASME SA-790, ASTM A268 / ASME SA-268 and ASTM A511. Finishes and conditions include Bright Annealed (CFA), Solution Annealed (CFD), Electro Polished (EP), Polished (APP), Annealed and Pickled (AP), Mirror Polish, Matt Polish and Cold Drawn.
Where it is used
exhaust manifolds and expansion joints, refinery heater and furnace components, aircraft and aerospace piping and high-temperature process vessels. We supply across India and export to markets in the Middle East, Africa, Europe, Asia, North America and South America.
Ordering
Send the quantity, standard and any special requirement and we will confirm availability. Material is supplied with documentation, tested in house across 18 listed testing facilities, and covered by our ISO 9001:2015 quality management system.
Also searched as
- 321 seamless Tubes, OD 3.1 mm × 0.9 mm wall supplier
- 321 3.1 mm seamless Tubes stockist in Mumbai
- stainless Steel Seamless Tubes 3.1 mm
This size
07 rows- Grade
- 321
- Product
- Seamless Tubes
- Outside diameter
- 3.1 mm
- Wall thickness
- 0.9 mm
- Length
- 5 m6.5 m
Cut to length on request
- Ends
- PlainBevelled
- Certification
- EN 10204 3.1
3.2 with third-party inspection on request
Other sizes in this grade are supplied to order — usually from stock.
Surface finishes
08- Bright Annealed (CFA)
- Solution Annealed (CFD)
- Electro Polished (EP)
- Polished (APP)
- Annealed and Pickled (AP)
- Mirror Polish
- Matt Polish
- Cold Drawn
Standards
10- ASTM A213 / ASME SA-213
- ASTM A269
- ASTM A312 / ASME SA-312
- ASTM A376 / ASME SA-376
- ASTM A789 / ASME SA-789
- ASTM A790 / ASME SA-790
- ASTM A268 / ASME SA-268
- ASTM A511
- ASTM B163 / ASME SB-163
- ASTM B407 / ASME SB-407
01Also held
Other 321 seamless tubes sizes
Complete technical reference
SS Seamless Tubes Grade 321 Diameter 3.1mm X 0.9mm Thickness
The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.
SS Seamless Tubes Grade 321 Diameter 3.1mm X 0.9mm Thickness Stockholders, Suppliers & Exporters in India.
Rajgranth Metals is a well-known manufacturer, stockholder, & exporter of SS seamless tubes Grade 321 Diameter 3.1 mm x 0.9 mm thickness. You've come to the right place. This guide will cover everything you need to know about this specific type of tube, including its composition, uses, and why it might be the perfect choice for your project.
SS Seamless Tubes must meet international standards like ASTM A312 or ASME SA213 to ensure quality. These standards guarantee that the tubes have been manufactured under strict conditions and meet necessary specifications for performance, safety, and durability.
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What Makes SS Grade 321 Unique?
Stainless steel (SS) Grade 321 is part of the austenitic family of stainless steels, known for their excellent corrosion and oxidation resistance. What makes SS 321 stand out is its titanium stabilization, which provides enhanced strength and resistance to intergranular corrosion. This added titanium is key to its durability in high-temperature environments, preventing the carbide precipitation that can weaken other grades of stainless steel, especially during welding.
Compared to popular grades like SS 304, SS 321 offers superior resistance to scaling at higher temperatures, making it more suitable for heat-intensive applications.
Key Applications of SS Seamless Tubes
SS seamless tubes Grade 321 with dimensions of 3.1 mm diameter and 0.9 mm thickness are used in several industries, including
- Industrial applications: for transporting fluids and gases under high pressure.
- Automotive industry: Used in exhaust systems where high temperatures and corrosion resistance are crucial.
- Aerospace industry: Particularly in aircraft engines, where high heat and stress are present.
- Petrochemical and oil & gas industry: Particularly in aircraft engines, where high heat and stress are present.
The Importance of Tube Diameter and Thickness
When we talk about tubes with 3.1 mm diameter and 0.9 mm thickness, these specifications aren't random. Each industry has its own needs, and these dimensions meet very specific criteria:
- Diameter 3.1 mm : Ensures that the tube can fit into tight spaces or function in specialized machinery.
- Thickness of 0.9 mm: Is thick enough to handle pressure without being overly heavy, striking a balance between strength and efficiency.
Process of SS Seamless Tubes
Seamless tubes are produced by heating a solid round billet of stainless steel and then piercing it to create a hollow tube. For Grade 321, additional titanium is included in the alloy to give the steel its unique properties. Unlike welded tubes, seamless tubes have no weak points or seams, which can be areas of vulnerability under pressure or corrosion.
This seamless construction provides a uniform structure, increasing its ability to resist high pressure and temperatures.
Stainless Steel Tubes Dimension – (S.S. Tubes)
19 entries
| Stainless Steel Tubes Dimension – (S.S. Tubes) | 13 | 1 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wall thickness in mm. | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.6 | 3 | 3.2 | 3.6 |
| O.D. in mm. | Weight in kg/meter | 12 | 1 | |||||||||
| 6 | 0.069 | 0.081 | 0.093 | 0.104 | 0.125 | 0.144 | 0.176 | – | – | – | – | – |
| 9.52 | 0.112 | 0.134 | 0.154 | 0.174 | 0.213 | 0.249 | 0.317 | – | – | – | – | – |
| 10 | 0.119 | 0.141 | 0.163 | 0.184 | 0.225 | 0.264 | 0.336 | – | – | – | – | – |
| 12.7 | 0.153 | 0.182 | 0.21 | 0.238 | 0.293 | 0.345 | 0.444 | – | – | – | – | – |
| 14 | 0.169 | 0.201 | 0.233 | 0.264 | 0.325 | 0.384 | 0.496 | – | – | – | – | – |
| 15.87 | 0.192 | 0.229 | 0.266 | 0.301 | 0.372 | 0.44 | 0.571 | 0.694 | – | – | – | – |
| 19 | 0.231 | 0.276 | 0.32 | 0.364 | 0.45 | 0.534 | 0.696 | 0.85 | 1.066 | 1.2 | 1.264 | – |
| 25 | 0.306 | 0.366 | 0.425 | 0.484 | 0.6 | 0.714 | 0.936 | 1.15 | 1.456 | 1.65 | 1.744 | 1.926 |
| 25.4 | 0.311 | 0.372 | 0.432 | 0.492 | 0.61 | 0.726 | 0.952 | 1.17 | 1.482 | 1.68 | 1.776 | 1.962 |
| 31.8 | – | – | – | – | – | 0.918 | 1.208 | 1.49 | 1.898 | 2.16 | 2.288 | 2.538 |
| 38 | – | – | – | – | – | 1.104 | 1.456 | 1.8 | 2.301 | 2.625 | 2.784 | 3.096 |
| 44.5 | – | – | – | – | – | 1.299 | 1.716 | 2.125 | 2.724 | 3.113 | 3.304 | 3.681 |
| 50.8 | – | – | – | – | – | 1.488 | 1.968 | 2.44 | 3.133 | 3.585 | 3.808 | 4.248 |
| 63.5 | – | – | – | – | – | – | 2.476 | 3.075 | 3.959 | 4.538 | 4.824 | 5.391 |
| 76.1 | – | – | – | – | – | – | 2.98 | 3.705 | 4.778 | 5.483 | 5.832 | 6.525 |
| 101.6 | – | – | – | – | – | – | 4 | 4.98 | 6 | 7 | 7,872 | 8.82 |
Chemical Composition
22 entries
| CHEMICAL COMPOSITION ( IN PERCENTAGE ) | 11 | 1 | ||||||||
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrogen (Max) | Cu/ Others |
| 301 | 0.15 | 2 | 0.045 | 0.03 | 1 | 16.00 – 18.00 | 6.00 – 8.00 | – | 0.1 | – |
| 304 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 10.50 | – | 0.1 | – |
| 304L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 8.00- 12.00 | – | 0.1 | – |
| 310S | 0.08 | 2 | 0.045 | 0.03 | 1.5 | 24.00- 26.00 | 19.00 – 22.00 | – | – | – |
| 316 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 316L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.1 | – |
| 317 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 14.00 | 3.00 – 4.00 | 0.1 | – |
| 317L | 0.03 | 2 | 0.045 | 0.03 | 0.75 | 18.00 – 20.00 | 11.00 – 15.00 | 3.00 – 4.00 | 0.1 | – |
| 321 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 12.00 | – | 0.1 | Ti5 ( C + N ) Min or 0.70 max |
| 347 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 17.00 – 19.00 | 9.00 – 13.00 | – | – | Cb= 10x ( C Min ) or 1.00 Max |
| 409 | 0.08 | 1 | 0.04 | 0.01 | 1 | 10.50 – 11.75 | 0.5 | – | – | Ti= 6x (C+ N ) Min or 0.70 Max |
| 409M | 0.03 | 0.81.2 | 0.03 | 0.03 | 0.40.75 | 11.00- 12.00 | 1.5 max. | – | – | Ti= 6x (C) Min or 0.70 Max |
| 410S | 0.08 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.6 | – | – | – |
| 410 | 0.15 | 1 | 0.04 | 0.03 | 1 | 11.50- 13.50 | 0.75 | – | – | – |
| 420 | 0.35 | 0.5 | 0.035 | 0.015 | 0.5 | 12.00 – 13.00 | 0.20.3 | – | – | – |
| 430 | 0.12 | 1 | 0.04 | 0.03 | 1 | 16.00 – 18.00 | 0.75 | – | – | – |
| JSL AUS | 0.08 | 7.08.0 | 0.07 | 0.03 | 0.75 | 15.50 – 16.50 | 4.25 – 4.75 | – | – | 0.9 – 1.10 |
| JS- 203 | 0.08 | 9.2510.25 | 0.07 | 0.03 | 0.75 | 14.25 – 15.25 | 2.25 – 2.75 | – | – | 1.60- 2.0 |
| 301M | 0.1 | 4.55.5 | 0.06 | 0.03 | 0.75 | 14.50 – 15.50 | 6.0 – 7.0 | – | – | 1.70- 1.90 |
| * Thickness of 1.27mm & below will have elongation of 20% min. | 11 | 1 |
|---|
Applications of SS Seamless Tubes in Diameter 3.1mm x 0.9mm
42 entries
These tubes find use in several critical industries:
- Oil and Gas: Used in high-pressure systems, pipelines, and instrumentation.
- Automotive: Applied in exhaust systems and fuel lines.
- Medical: In surgical tools, implants, and fluid control systems.
- Instrumentation: For precise control in measuring equipment.
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321 / 321H applications
04- Exhaust manifolds and expansion joints
- Refinery heater and furnace components
- Aircraft and aerospace piping
- High-temperature process vessels
321 seamless tubes, OD 3.1 mm × 0.9 mm wall.
Tell us the quantity and where it is going. We will confirm stock and come back with price the same working day.