The item
Alloy 20 welded Tubes with an outside diameter of 21.3 mm and a wall thickness of 1.6 mm. Nickel-iron-chromium with copper and niobium. Developed for sulphuric acid.
Alloy 20 Welded TubesIn stock
Alloy 20 welded tubes
OD 21.3 mm × 1.6 mm wall
This is a size we hold rather than one we have to roll. Nickel-iron-chromium with copper and niobium. Developed for sulphuric acid. Supplied with a mill test certificate to EN 10204 3.1 as standard.
OD 21.3 mm × 1.6 mm wallUNS N08020EN 2.4660HSN 7306
Properties
Super Austenitic- PREN
- 30
- Relative cost
- 4.00×
- Max service temp
- 500 °C
- Magnetic
- No
- Weldability
- Good
- Machinability
- Difficult
Pitting resistance equivalent. Higher resists chlorides better.
Indexed to 304. Indicative, for specification triage.
01Product description
Alloy 20 stainless steel welded Tubes, OD 21.3 mm × 1.6 mm wall: stockist and supplier in Mumbai
Rajgranth Metal & Alloys stocks and supplies Alloy 20 welded Tubes, OD 21.3 mm × 1.6 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
Alloy 20 (Carpenter 20), designated UNS N08020, EN 2.4660, AISI Alloy 20 and Werkstoff NiCr20CuMo.
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
sulphuric acid pumps, valves and piping, pickling equipment, pharmaceutical process vessels and fertiliser and chemical plant. 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
- alloy 20 welded Tubes, OD 21.3 mm × 1.6 mm wall supplier
- Alloy 20 21.3 mm welded Tubes stockist in Mumbai
- stainless Steel Welded Tubes 21.3 mm
This size
07 rows- Grade
- Alloy 20
- Product
- Welded Tubes
- Outside diameter
- 21.3 mm
- Wall thickness
- 1.6 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 Alloy 20 welded tubes sizes
Complete technical reference
SS welded tubes grade Alloy 20 Diameter 21.3mm X 1.6 mm thickness
The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.
SS welded tubes grade Alloy 20 Diameter 21.3mm X 1.6 mm thickness, Suppliers & Exporters in India.
SS seamless tubes, especially those made from Alloy 20, stand out for their durability, corrosion resistance, and efficiency. Among the various dimensions available, the 21.3 mm diameter and 1.6 mm thickness tubes are particularly favoured in many industries for their adaptability and superior mechanical properties. In this comprehensive guide, we’ll delve into the features, benefits, and applications of Alloy 20 seamless tubes of these dimensions.
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Key properties of Alloy 20 include:
- Excellent resistance to pitting and crevice corrosion in acid environments.
- Good mechanical strength, making it ideal for high-stress applications.
- Outstanding weldabilityensuring ease of installation in piping systems.
Specifications of SS Welded Tubes – 21.3 mm Diameter X 1.6 mm Thickness
These SS Welded tubes, with a diameter of 21.3 mm and a wall thickness of 1.6 mm, provide a perfect balance between strength and weight. Their seamless construction eliminates the risk of leaks and weak points, ensuring consistent performance in critical applications.
Key advantages of welded tubes:
- High pressure resistance:With no welded joints, welded tubes can withstand greater pressure compared to welded counterparts.
- Enhanced corrosion resistance: Welded tubes have uniform strength across the tube wall, offering better protection against corrosion.
- Precision:The consistent dimensions ensure a precise fit for industrial piping systems.
Applications of Alloy 20 SS Welded Tubes
Due to its superior corrosion resistance and mechanical strength, Alloy 20 is widely used in industries that handle harsh chemicals and demanding environments. Some of the most common applications include:
- Chemical processing: Ideal for handling sulfuric acid, phosphoric acid, and chlorides.
- Pharmaceuticals: : Resistant to chemical corrosion, making it suitable for use in equipment that handles caustic solutions.
- Food processing: Alloy 20 is approved for use in applications where hygiene and corrosion resistance are critical.
- Petrochemical industries: For piping systems exposed to acidic environments, this grade is a preferred choice.
Benefits of Using Alloy 20 Welded Tubes in Critical Applications
- Enhanced corrosion resistance: With a high nickel content, Alloy 20 provides superior protection against corrosion compared to standard stainless steels.
- Cost efficiency: Although a specialty alloy, Alloy 20 offers long-term savings by reducing maintenance costs and extending equipment life.
- Temperature performance: Alloy 20 can handle a wide range of temperatures, making it versatile for different environments, from low to moderately high temperatures.
Why Choose Welded Tubes with 21.3 mm Diameter and 1.6 mm Thickness?
The 21.3 mm diameter combined with the 1.6 mm wall thickness provides an ideal mix of durability and flexibility. These dimensions make the tube suitable for medium-pressure applications, while still being light enough to offer cost efficiency in terms of materials and ease of installation.
Key reasons to choose this dimension:
- Perfect balance: Provides a balance between structural integrity and flow capacity.
- Ease of transport and installation: : Lightweight yet durable enough for harsh conditions.
- Versatile: Suitable for a wide range of industrial processes, from chemical handling to water treatment.
Compliance and Quality Standards for SS Welded Tubes
Welded tubes of this specification typically meet global standards such as ASTM, ASME, and DIN. Compliance with these standards ensures that the tubes offer optimal performance in terms of strength, corrosion resistance, and durability.
Common certifications include:
- ASTM B729 – Standard for seamless alloy steel pipes.
- ASME SB-729 – Specification for seamless pipes in chemical processing.
Final Thoughts: Investing in Alloy 20 Seamless Tubes
For industries that demand high-performance, corrosion-resistant piping solutions, Alloy 20 seamless tubes with a diameter of 21.3 mm and thickness of 1.6 mm offer the ideal solution. Their ability to withstand harsh environments, combined with their excellent mechanical properties, makes them a cost-effective and reliable option for industrial applications. Whether you are in the chemical, pharmaceutical, or food processing industry, choosing Alloy 20 ensures that your system will perform efficiently and with minimal maintenance for years to come.
Stainless Steel Pipes Dimension – (S.S. Pipes)
19 entries
| Stainless Steel Pipes Dimension – (S.S. Pipes) | 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 |
|---|
Mechanical Properties
22 entries
| MECHANICAL PROPERTIES | 6 | 1 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade | 1 | 2 | Tensile Strength Mpa, (Min) | 1 | 2 | Yield Strength Mpa, (Min) | 1 | 2 | %Age Elongation in 50mm gauge length min | 1 | 2 | Hardness (Max) | 2 | 1 |
| BHN | Rb | |||||||||||||
| 301 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 304 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 304L | 485 | 170 | 40 | 201 | 92 | |||||||||
| 310S | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 316L | 485 | 170 | 40 | 217 | 95 | |||||||||
| 317 | 515 | 205 | 35 | 217 | 95 | |||||||||
| 317L | 515 | 205 | 40 | 217 | 95 | |||||||||
| 321 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 347 | 515 | 205 | 40 | 201 | 92 | |||||||||
| 409 | 380 | 170 | 20 | 179 | 88 | |||||||||
| 409M | 430 | 275 | 20 | 187 | 90 | |||||||||
| 410S | 415 | 205 | 22 | 183 | 89 | |||||||||
| 410 | 450 | 205 | 20 | 217 | 89 | |||||||||
| 420 | 700( max ) | – | 15 | 217 | 95 | |||||||||
| 430 | 450 | 205 | 22 | 183 | 89 | |||||||||
| JSL AUS | 515 | 205 | 40 | 217 | 95 | |||||||||
| JS- 203 | 515 | 205 | 40 | 217 | 95 | |||||||||
| 301M | 515 | 205 | 40 | 217 | 95 |
Alloy 20 applications
04- Sulphuric acid pumps, valves and piping
- Pickling equipment
- Pharmaceutical process vessels
- Fertiliser and chemical plant
Industries
04Alloy 20 welded tubes, OD 21.3 mm × 1.6 mm wall.
Tell us the quantity and where it is going. We will confirm stock and come back with price the same working day.