SS welded tubes grade Alloy 20 Diameter 9.5 mm X 1.6 mm thickness

SS Welded tubes grade Alloy 20 Diameter 9.5 mm X 1.6 mm thickness, Suppliers & Exporters in India.

Alloy 20 is a highly corrosion-resistant material, making it an excellent choice for manufacturing stainless steel (SS) welded tubes. Known for its ability to withstand harsh chemical environments, Alloy 20 is specifically designed to resist acids like sulfuric acid, making it a preferred option for industries such as chemical processing, petrochemicals, and pharmaceuticals.

Alloy 20 is a highly corrosion-resistant material, making it an excellent choice for manufacturing stainless steel (SS) welded tubes. Known for its ability to withstand harsh chemical environments, Alloy 20 is specifically designed to resist acids like sulfuric acid, making it a preferred option for industries such as chemical processing, petrochemicals, and pharmaceuticals. When combined with precision specifications such as Diameter: 9.5 mm and Thickness: 1.6 mm, these seamless tubes offer reliability in demanding industrial applications.

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What Are Welded Tubes?

Unlike welded tubes, welded tubes are formed by extruding a solid round steel billet into a hollow tube without any welding. This results in a smooth surface finish and better mechanical properties, as there are no seams that may become weak points under high pressure or corrosive conditions.

Key Features of SS welded Tubes in Alloy 20

  • Exceptional Corrosion Resistance: Alloy 20 is known for its superior resistance to sulfuric acid and various aggressive chemicals, which is essential for industries that deal with corrosive substances.
  • Superior Strength: Alloy 20 offers excellent mechanical properties, including high tensile strength, which makes the tubes resistant to cracking and deformation, even under extreme pressure.
  • Dimensional Precision: The specification of 9.5 mm diameter and 1.6 mm wall thickness ensures that these seamless tubes offer perfect dimensional accuracy, which is crucial for precise industrial applications.
  • High Temperature Tolerance: The alloy can withstand elevated temperatures, making it suitable for operations where extreme heat is a concern.

Applications of SS Welded Tubes Grade Alloy 20

Thanks to the unique properties of Alloy 20, these seamless tubes (9.5 mm diameter x 1.6 mm thickness) are widely used in:

  • Chemical and Petrochemical Industries: Alloy 20's resistance to acidic environments, particularly sulfuric acid, makes it indispensable in chemical processing plants, where tubes are exposed to aggressive chemicals.
  • Food and Pharmaceutical Industry: Alloy 20 is compliant with various food safety standards due to its non-reactive properties and resistance to corrosion. It's commonly used in equipment and piping systems that require high levels of cleanliness and purity.
  • Marine Applications: The excellent corrosion resistance of Alloy 20 also makes it suitable for marine environments, where exposure to seawater and harsh weather conditions is a constant challenge.
  • Nuclear and Energy Sectors: The strength and corrosion resistance of Alloy 20 makes it a reliable material for applications in energy and nuclear plants, especially in heat exchangers and reactors.

Technical Specifications for Alloy 20 Welded Tubes

  • Grade: Alloy 20 (UNS N08020)
  • Diameter:9.5 mm
  • Wall Thickness: 1.6 mm
  • Standards:ASTM B729, ASME SB729, DIN, and other industry-specific standards
  • Finish: Bright annealed, pickled, or as specified by the customer
  • Length:Customizable based on project requirements (available in fixed or random lengths)

Benefits of Using SS Seamless Tubes Made from Alloy 20

  • Durability in Harsh Conditions: Designed to endure aggressive environments, Alloy 20 tubes can last longer compared to traditional stainless steels like 304 or 316 in acid-heavy environments.
  • Leak-Proof Design: The seamless construction eliminates weak spots, ensuring a leak-proof and high-strength performance under high-pressure conditions.
  • Low Maintenance:Due to their high resistance to corrosion, these tubes require minimal maintenance, saving costs in the long run.

Frequently Asked Questions (FAQs)

What makes Alloy 20 better than 316 stainless steels?

Alloy 20 provides superior resistance to sulfuric acid and other corrosive chemicals compared to 316 stainless steels. This makes it ideal for applications that involve exposure to harsh chemicals, which would otherwise corrode standard grades.

Can Alloy 20 seamless tubes handle high-pressure environments?

Yes, the seamless design of the tubes, combined with the strength of Alloy 20, allows them to withstand high-pressure environments without deformation or cracking.

What is the maximum temperature these tubes can endure?

Alloy 20 seamless tubes can operate effectively at temperatures up to 500°C, depending on the specific environment and conditions.

Are custom sizes available for SS seamless tubes in Alloy 20?

Yes, manufacturers can often customize the tube dimensions to meet specific project requirements. Common variations include different diameters, wall thicknesses, and lengths.

Stainless Steel Pipes Dimension – (S.S. Pipes)

Stainless Steel Pipes Dimension – (S.S. Pipes)
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
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

CHEMICAL COMPOSITION (IN PERCENTAGE)
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.

Mechanical Properties

MECHANICAL PROPERTIES
Grade Tensile Strength
Mpa, (Min)		 Yield Strength
Mpa, (Min)		 %Age Elongation
in 50mm gauge
length min		 Hardness (Max)
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


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