INCOLOY® alloy 20 Chemical Composition, Carpenter® 20 alloy, 20CB-3® Mechanical Properties
Reliant Pipes & Tubes Pvt. Ltd.

INCOLOY® alloy 20 Chemical Composition, Carpenter® 20 alloy, 20CB-3® Mechanical Properties

Alloy 20 Pipe | INCOLOY® alloy 20 Chemical Composition, Carpenter® 20 alloy, 20CB-3® Mechanical Properties | Nickel Alloy 20 (UNS N08020) | Dimensions | Alloy 20 Stainless Steel Material Property Data Sheet

Alloy 20 Pipe

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Reliant Pipes is India’s specialist provider of Alloy 20 Pipe and has an extensive stock of associated high and Alloy 20 Pipe Tubes., Reliant Pipes through long standing relationships with leading global steel mills, is able to obtain the highest quality material available in the market, within the best possible lead times.

Our strategy is to recognise the technical and business requirements of our different customer types through long term relationships, and come to the client with the best understanding of their business, the technical specifications of the materials, price, quality and delivery expectations., our stock is always changing and expanding, in addition to full pipe lengths we also hold a number of short lengths and provide a ‘cut to length’ service, so that you are best able to get pipe that suits your needs and minimises your wastage.

If you don’t see what you’re looking for just call one of our team members at +91-22-66310022 Or Mail Us reliant@reliant.in. No inquiry is too large or too small, we specialize in locating hard to find items. If you do see what you are looking, we would love to assist you and give you a quote today!

Alloy 20, UNS N08020, Carpenter 20, 20Cb-3, Incoloy Alloy 20

Description

Alloy 20 is an iron-base, austenitic alloy with excellent corrosion resistance to a number of different media and proves to be useful in a number of applications such as flue-gas desulfurization, chemical processing, food processing and storage as well as pharmaceutical applications to name a few. Application of the alloy could result in real cost savings when carefully compared to higher-cost alloys to determine if the necessary resistance is obtained in the chosen media. Applications are limited to a maximum temperature of 1000°F per ASME.

Resistance to Corrosion

Resistance to sulfuric acid is particularly exceptional but the alloy shows useful resistance in phosphoric acid, nitric acid as well as in chloride environments. Alloy 20 is an excellent option when chloride stress corrosion cracking is an issue and resists pitting and crevice corrosion.

Fabrication and Heat Treatment

Alloy 20 can be formed by either hot-working or cold-work using traditional methods. Hot forged material should be heated between 2100°F and 2250°F with careful temperature control insuring that the material not fall below 1800°F prior to forging. After hot working, anneal the material by heating to 1725°F and 1850°F for a minimum of 30 minutes per inch of thickness followed by water quench.

When stress relieving is desired, heat to a temperature below 1000°F followed by water quench after the desired time at temperature
has been established. Annealing Alloy 20 should be between 1725°F and 1850°F for 30 minutes at temperature per inch of thickness. A lower hardness can be obtained by heating to 2100°F but his may have a negative effect on the stabilization of the alloy.

Welding Alloy 20 is commonly performed via, TIG, MIG as well as submerged arc welding (SAW) using either the matching filler metal, ER320LR for TIG and MIG and E320LR for SAW. When welding to dissimilar alloys such as 316 or higher alloys such as C276 and Alloy 22, AWS ERNiCrMo-3 can be used for TIG and MIG while using ENiCrMo-3 for SAW.

Specifications

N08020, ASTM B473, ASME SB473, COLD DRAWN, HOT FINISHED, EN 10204-3.1, ASME SA 240, ASME SB 366, ASME SB 463, ASTM A 240, ASTM B 366, ASTM B 463,

Common Trade Names

INCOLOY® alloy 20, Carpenter® 20 alloy, 20CB-3®

INCOLOY® is a registered trademark of the Special Metals Corporation group of companies.

Carpenter® and 20CB-3® are registered trademarks of Carpenter.

Chemical Composition:

Element Nickel Chromium Molybdenum Copper Columbium + Tantalum Carbon Iron
Avg. Nominal % 32.5 - 35.0 19.0 - 21.0 2.0 - 3.0 3.0 - 4.0 1.00 Max 0.06 Max Balance

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 FORM SIZE RANGE FROM SIZE RANGE TO
Alloy 20 sheet & plate 1.6 mm 76.2 mm
Alloy 20 round bar 10 mm 279.4 mm
Alloy 20 pipe 0.5 in 10 in
Alloy 20 pipe fittings 0.5 in 10 in
Alloy 20 flanges 0.5 in 10 in

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
MECHANICAL & PHYSICAL PROPERTIES 21.1°C 49.4°C 100°C 150°C 200°C 300°C 350°C 400°C 450°C 500°C 900°C
Ultimate Tensile Strength /MPa 551.6 - - - - - - - - - -
0.2% Yield Strength /MPa 241.3 - - - - - - - - - -
Reduction of area % (for bar) 50 - - - - - - - - - -
Elongation % 30 - - - - - - - - - -
Coefficient of Thermal Expansion µm/m⁰C - - 14.7 14.9 15.1 15.5 15.7 15.9 16 17.2
Thermal Conductivity /kcal/(hr.m.°C) - 125.9 135.1 153.3 169.6 187.5

CHEMICAL ANALYSIS

% NI CR MO MN CU SI C S P NB+TA FE
Min 32.5 19 2 - 3 - - - - 8.0 x C 1.0 -
Max 35 21 3 2 4 1 0.06 0.035 0.035 - Balance

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Alloy 20 Pipe | Alloy 20 Stainless Steel Pipe Price in India | Alloy 20 Pipe Suppliers in India, Nickel Alloy 20 (UNS N08020) | Chemical Composition | Dimensions | Alloy 20 Stainless Steel Material Property Data Sheet

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