Alloy 20 Stainless Steel / UNS N08020

General Properties of Alloy 20 / UNS N08020 :

Alloy 20 (UNS N08020) is an austenitic, nickel-iron-chromium based super alloy with additions of Copper and Molybdenum which provide resistance to hostile environments, pitting, and crevice corrosion. It is also stabilized with Columbium to minimize carbide precipitation during welding. Alloy 20 appears to fall between both the stainless and nickel categories as it contains characteristics of both. It was designed for maximum resistance to acid attack and demonstrates superior resistance to Stress Corrosion cracking in boiling 20% to 40% sulfuric acid, and also has excellent general corrosion resistance to sulfuric acid and to chloride stress corrosion cracking. Alloy 20 has good mechanical properties at both ambient and elevated temperatures, up to approximately 930°F (500°C) and is readily fabricated by usual industrial processes.

Alloy 20 (UNS N08020) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products.

Descriptions of Alloy 20 / UNS N08020 :

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.

The Nickel, Chromium, Molybdenum and Copper content of these Alloy 20 Rods contribute to its general resistance to chloride on stress corrosion cracking and general pitting attack. Meanwhile, the alloy is stabilized by means of columbium to minimize carbide precipitation during welding. As a Manufacturer, Supplier, Stockist and Exporter, we offer these UNS N08020 Round Bars and Rods in custom made sizes and thicknesses as per the exact demands of our esteemed clients.

M/s New Arise Metal is a prestigious organization that is relatively engaged in offering a wide range of Alloy 20 Round Bars and Rods. We offer these Carpenter 20 Round Bars and Rods in international and national quality of standards at cost-effective rates to our patrons. Alloy 20 Bars is one of the ostensible "Super" stainless steels that were designed for maximum resistance to acid attack.

UNS N08020, also known as Alloy 20 is one of the “super” stainless steels developed for maximum resistance to acid attack, because of these, there are various uses for it in both the stainless and nickel industries. Alloy 20 seems to fall in-between both the stainless and nickel categories, as it does contain characteristics of both; however, the Unified Numbering System (UNS) does ultimately recognize it as a nickel based alloy, hence the UNS N08020 number.

Alloy 20 is an austenitic nickel-iron-chromium based alloy with additions of copper and molybdenum. Its nickel content aids in its chloride ion stress and corrosion resistance. The addition of copper and molybdenum provides resistance to hostile environments, pitting and crevice corrosion. Chromium adds to its resistance of oxidizing environments, such as nitric acid, and columbium (or niobium) reduces the effects of carbide precipitation. Most welding methods can be used when working with Alloy 20, except for oxyacetylene welding. It can also be hot formed using the same forces required to hot work austenitic stainless steels. In terms of machinability, outstanding finishes are possible using the same set-up and process speeds used for austenitic stainless steels, such as Stainless Steels 316 or 317.

Specifications of Alloy 20 / UNS N08020:

UNS N08020, 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, ASME SA 240, ASME SB 366, ASME SB 463, ASTM A 240, ASTM B 366, ASTM B 463, ASTM B 473, EN 2.4660, UNS N08020, Werkstoff 2.4660

Common Trade Names :

Alloy 20, UNS N08020, 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.

ASTM B 473 / ASME SB 473 Alloy 20 Round Bars Specifications :

• Standards : EN, DIN, JIS, ASTM, BS, ASME, AISI and API
• Specifications : ASTM B 473 / ASME SB 473
• Grade : Alloy 20 – UNS N08020
• Size : 15NB to 150NB Inch.
• Length : 100 mm To 3000 mm Long & Above
• Dia : 4 mm To 350 mm DIA
• Form : Round, Square, Hex (A/F), Rectangle, Flat, Bush Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
• Finish : Bright, Polish & Black

Chemical Properties / Chemistry of Alloy 20 / UNS N08020:

Mechanical Properties of Alloy 20 / UNS N08020:

Physical Properties of Alloy 20 / UNS N08020:

Bar Specifications of Alloy 20 / UNS N08020:

Alloy 20 UNS N08020 Round Bars Equivalent Grades:

Other Grades of Alloy 20 Round Bars, Rods & Wires :

• Alloy 20 Round Bars
• Alloy 20 ASTM B 473 Rods
• Alloy 20 ASME B 473 Wires
• Alloy 20 UNS N08020 Rods
• Alloy 20 DIN 2.4660 Round Bars

Other Products of Alloy 20 Bars & Rods :

• Bright Bars
• Hex Bars
• Bars
• Rods
• Square Bars
• Black Bars
• Round Bars
• Forged Bars
• Wires

Features of Alloy 20 / UNS N08020 :

• Excellent resistance to hot sulfuric acid
• Resistant to intergranular corrosion in the as-welded condition
• Chloride stress corrosion cracking resistance

Applications of Alloy 20 / UNS N08020 :

Alloy 20 was originally designed for use in sulfuric acid related applications; however, it is now frequently used in a wide variety of industries. Applications that commonly use Alloy 20 include:

• Sulfuric acid pickling tanks, racks and heating coils
• Phosphate coating drums and racks
• Heat exchangers
• Bubble caps
• Process piping
• Mixing tanks
• Chemical and petroleum process equipment
• Chemical and allied industries
• Food and dye production
• Explosives
• Tanks
• Valves
• Pickling racks
• Manufacture of synthetic rubber and plastics
• Pharmaceuticals
• SO2 scrubbers and other severe environments

Industries that use Alloy 20 / UNS N08020 include:

Products partially or completely constructed of Alloy 20 / UNS N08020 include:

• Centrifugal pumps
• Control valves
• Cryogenic ball valves
• Float level switches
• Flow switches
• Pressure relief valves
• Rotary gear process pumps
• Spiral wound gaskets
• Strainers

Standards:

• ASTM/ASME: UNS N08020
• EURONORM: FeMi35Cr20Cu4Mo2
• DIN: 2.4660

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.

• Excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids.
• Nickel content aids in chloride ion stress and corrosion resistance.
• Additions of Copper and Molybdenum provide resistance to hostile environments, pitting, and crevice corrosion.
• Chromium adds to its resistance of oxidizing environments such as nitric acids.
• Columbium reduces the effects of carbide precipitation

Weldability:

• All commonly used welding methods, with the exception of oxyacetylene, can be successfully used.
• The presence of Columbium tends to minimize the precipitation of carbides in the heat-affected zone, so the material may be used in the as-welded condition in most cases.
• Pre-heating is not required.

Heat Treatment:

• Cannot be hardened by heat treatment.
• Stabilized-annealing is done at 1750-1850°F, followed by water quenching.
• Stress relieving can be performed on annealed material up to 950°F.

Processing – Hot Forming:

• Heat uniformly to a starting temperature of 2100-2225°F. Finish forging before the stock drops below 1800°F.
• In order to stabilize the material after hot working operations, reheat at 1750-1850°F for a minimum of 1/2-hour per one inch of thickness and water quench.

Processing – Cold Forming:

• Alloy 20 has good cold formability. Bending, drawing and pressing, and other forming operations that occur in the production of fabricated items are readily performed.
• Alloy 20 can normally be press brake bent over a radius twice the materials thickness.
• After cold reductions of more than 15%, a final stabilizing annealing is often required.

Machinability:

• Because of Alloy 20′s high work-hardening rate the following are required:
• Only low surface-cutting speeds are possible compared with low-alloy standard austenitic stainless steel.
• Tools should be engaged at all times.
• Heavy feeds are important in getting below the work-hardened ‘skin’.

Fabrication and Heat Treatment for Alloy 20 / UNS N08020 :

Alloy 20 / UNS N08020 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.

Cities We Deliver Alloy 20 / UNS N08020 Round bar, Rods, Bars to :

Abu Dhabi, Perth, Ulsan, Al Khobar, Melbourne, Singapore, Chiyoda, Ahvaz, Noida, New Delhi, Faridabad, Granada, Tehran, Busan, Kanpur, Caracas, Jamshedpur, Thiruvananthapuram, La Victoria, Bengaluru, Manama, Doha, New York, Ranchi, Ludhiana, Gimhae-si, Aberdeen, Sharjah, Rio de Janeiro, Edmonton, Vung Tau, Bangkok, Coimbatore, Muscat, Toronto, Haryana, Seoul, Navi Mumbai, Chandigarh, Jakarta, Riyadh, Al Jubail, London, Courbevoie, Jeddah, Howrah, Kuwait City, Vadodara, Brisbane, Baroda, Milan, Dammam, Mexico City, Jaipur, Calgary, Visakhapatnam, Lagos, Ahmedabad, Sydney, Gurgaon, Los Angeles, Pune, Cairo, Houston, Atyrau, Pimpri-Chinchwad, Bhopal, Santiago, Petaling Jaya, Dubai, Kuala Lumpur, Indore, Nagpur, Port-of-Spain, Bogota, Chennai, Ankara, Thane, Algiers, Surat, Montreal, Hong Kong, Hyderabad, Moscow, Kolkata, Geoje-si, Karachi, Hanoi, Nashik, Colombo, Mumbai, Secunderabad, Ernakulam, Lahore, Rajkot, Istanbul, Ho Chi Minh City, Dallas, Madrid

Countries We Deliver Alloy 20 / UNS N08020 Round bar, Rods, Bars to :

Nepal, Sri Lanka, Belarus, Costa Rica, Peru, Ukraine, Kuwait, Norway, Romania, Argentina, Greece, Iran, Iran, South Africa, France, Ireland, India, Canada, Chile, Yemen, Zimbabwe, Kazakhstan, Ecuador, Germany, Puerto Rico, United Kingdom, Angola, Denmark, Italy, Nigeria, Libya, Algeria, Qatar, Venezuela, Sweden, Hungary, United Arab Emirates, Jordan, Hong Kong, Namibia, Philippines, Saudi Arabia, Poland, Vietnam, Mexico, Portugal, Nigeria, Bangladesh, Slovakia, Brazil, Lithuania, Belgium, United States, Bolivia, Afghanistan, Iraq, Oman, Pakistan, Spain, Croatia, Gabon, Mexico, Trinidad & Tobago,Tunisia, Turkey, Bulgaria, Finland, Lebanon, China, Kenya, South Korea, Singapore, Estonia, Colombia, Bahrain, Austria, Tibet, Egypt, Switzerland, Israel, New Zealand, Malaysia, Japan, Macau, Serbia, Ghana, Morocco, Netherlands, Chile, Azerbaijan, Czech Republic, Australia, Thailand, Taiwan, Indonesia, Bhutan, Mongolia, Poland, Russia, Gambia

Other Available Products of Alloy 20 Round Bars :

Alloy 20 Round Bar / UNS N08020 Round Bars, Rods, Bars Supplier to :

Rajkot, Surat, Noida, Vung Tau, Montreal, Jaipur, Karachi, Howrah, Edmonton, Brisbane, Granada, Pimpri-Chinchwad, Madrid, Kanpur, Chandigarh, Muscat, Faridabad, Dammam, Kuala Lumpur, Abu Dhabi, Lagos, Bhopal, Los Angeles, New York, Aberdeen, Busan, Pune, Tehran, Al Khobar, Caracas, Istanbul, Hong Kong, Ankara, Lahore, Port-of-Spain, Dallas, Calgary, Nashik, Kolkata, Baroda, Gurgaon, Sydney, Indore, Gimhae-si, Singapore, Atyrau, Ahmedabad, La Victoria, Toronto, Cairo, Petaling Jaya, Chennai, Manama, Vadodara, Algiers, Haryana, Milan, Bangkok, Ahvaz, Hyderabad, Thane, Mumbai, Jakarta, Chiyoda, Kuwait City, Coimbatore, Nagpur, Rio de Janeiro, Perth, Mexico City, Moscow, Ranchi, Hanoi, Ludhiana, Al Jubail, Melbourne, Ernakulam, Doha, Bogota, Jamshedpur, Ulsan, Geoje-si, Seoul, Colombo, Jeddah, Santiago, Bengaluru, Houston, New Delhi, Thiruvananthapuram, Courbevoie, Navi Mumbai, Secunderabad, Sharjah, Dubai, Ho Chi Minh City, Visakhapatnam, Riyadh, London.

Alloy 20 Round Bar / UNS N08020 Round Bars, Rods, Bars Exporter to :

Gabon, Libya, Ukraine, Italy, Bangladesh, Belarus, South Africa, Nigeria, United Kingdom, Iran, Poland, Australia, Bahrain, Oman, United States, Russia, Thailand, Hong Kong, Norway, Romania, Ecuador, Algeria, Mexico, Peru, Poland, Lebanon, Mexico, Estonia, Belgium, Israel, Switzerland, Afghanistan, Ireland, Czech Republic, Spain, Colombia, Nepal, South Korea, Turkey, Argentina, Brazil, France, Pakistan, Iraq, Netherlands, Sri Lanka, Saudi Arabia, Taiwan, Zimbabwe, Kenya, Tibet, Gambia, China, Bhutan, Nigeria, United Arab Emirates, New Zealand, Singapore, Canada, Vietnam, Japan, Chile, Iran, Sweden, Jordan, Azerbaijan, Malaysia, Egypt, Costa Rica, Macau, Indonesia, Philippines, Lithuania, Kuwait, Germany, Yemen, Croatia, Bulgaria, Serbia, Angola, Denmark, Morocco, Portugal, Slovakia, Chile, Ghana, Venezuela, Mongolia, Puerto Rico, Kazakhstan, Bolivia, India, Qatar, Greece, Trinidad & Tobago, Tunisia, Hungary, Finland, Namibia, Austria.