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Alloy 20

A nickel-iron-chromium grade, Alloy 20 is ideal for a wide range of corrosive environments.

With the addition of copper, molybdenum and niobium, Alloy 20 is the alloy of choice for sulphuric acid applications.

Inventory

Product formSize range fromSize range to
Alloy 20 sheet & plate1.6 mm76.2 mm
Alloy 20 round bar10 mm279.4 mm
Alloy 20 pipe0.5 in10 in
Alloy 20 pipe fittings0.5 in10 in
Alloy 20 flanges0.5 in10 in

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Flanges

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Pipe Fittings

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Pipe

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Sheet & Plate

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Round Bar

Chemical Analysis

%NiCrMoMnCuSiCSPNb+TaFe
Min32.5192-3----8.0 x C 1.0-
Max352132410.060.0350.035-Balance

Applications

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Perfect for applications in the Chemical Processing Industry

Alloy 20 can be used in a variety of applications, here are just a few examples:

  • Sulfuric acid pickling tanks, racks and heating coils
  • Phosphate coating drums and racks
  • Heat exchangers
  • Process piping
  • Tanks
  • Pumps and valves
  • Gaskets
  • Mechanical seals
  • Process equipment for manufacture of bullet-proof fibre, Kevlar

About Alloy 20

Alloy 20 contains niobium for stabilization which enhances its corrosion resistance. The alloy is an iron-base, austenitic alloy with excellent corrosion resistance to a wide range of media.

With the high nickel content, Alloy 20 shows good resistance to chloride-induced stress corrosion cracking. In addition the alloy also has good resistance to pitting and crevice corrosion.

In the chemical process market, key applications of Alloy 20 are in sulphuric, phosphoric and nitric acid environments.

The alloy is also commonly used in the food industry for the manufacture of food preservatives (phosphorus oxychloride and phosphorus trichloride).

 

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Properties

Density:
7.695 g/cm³ annealed
Melting range:
1385-1443°C
Electrical resistivity:
1.08 x 10-6 Ω⋅m
Poisson's Ratio:
0.31

Specifications

UNS Number:
N08020
W.Nr.Number:
2.4660
Standards:
ASTM A240, B463, B473, B366, B464, B468, B462, B729, B775
Download the Alloy 20 Data Sheet Download

FAQs & Resources

Yes, please contact our sales team for more information.

You can fill in ‘Request a Quote’ form online on most of the pages on our website or click ‘contact us’. Alternatively, you can also call us, fax your enquiry to us or send an email to enquiries@neonickel.com

You can fill in ‘Request a Quote’ form online on most of the pages on our website or click ‘contact us’. Alternatively, you can also call us, fax your enquiry to us or send an email to enquiries@neonickel.com

Request a Quote

Fill in our online form to get a fast quote. Got a technical question? Contact us on techsales@neonickel.com or for more general enquiries please email us at enquiries@neonickel.com