Alloy 020 is available in Round Bar. For all stock availability contact Sales.
| Alloy Name | Trade Name | UNS No. | German Specs |
| Alloy 20/020 | Carpenter 20Cb-3 Incoloy 020 |
UNS N08020 | Werkstoff 2.4660 |
Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid. This superalloy has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. Carpenter 20 combines excellent corrosion resistance with elevated mechanical properties and relatively easy fabrication. Although originally designed for use in sulfuric acid related industries, Alloy 20 is now a popular choice for a wide variety of industries including the chemical, food, pharmaceutical, and plastics industries. In addition, this superalloy is used in heat exchangers, mixing tanks, metal cleaning and pickling equipment, and piping.
There has long been a debate on whether Carpenter 20 is a stainless steel or a nickel alloy because the nickel content is right on the border of defining it as one way or the other. So, depending on who you talk to this alloy may be referred to as alloy 20 Stainless Steel or as a nickel alloy. Either way it is still great for corrosion resistance.
| Chemical Composition Limits | |||||||||||
| Weight% | Ni | Cr | Cu | Mo | Fe | C | Nb+Ta | Mn | P | S | Si |
| Alloy 20 | 32.0 - 38.0 | 19 - 21 | 3 - 4 | 2 - 3 | bal | 0.07 max | 8 x C-1 | 2 max | 0.045 max | 0.035 max | 1.0 max |
Alloy 020 (UNS N08020, W. Nr 2.4660) is a nickel-iron-chromium alloy which has the addition of copper and molybdenum. With the additions of niobium Alloy 020 is stabilized against sensitization and resultant intergranular corrosion. Alloy 020 has excellent resistance to general corrosion, pitting and crevice corrosion and is commonly used for chemical, pharmaceutical and food processing, tanks, piping, heat exchangers, pumps, Kevlar production and much more.
| Material | Yield Strength (0.2% Offset) | Tensile Strength | Elongation (%) | ||
| psi | MPa | psi | MPa | ||
| Alloy 20 | 45,000 | 300 | 90,000 | 620 | 40 |
Specifications
| Alloy 20 Bar | ASTM B 473 |
| Alloy 20 Plate | ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Alloy 20 Sheet | ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Alloy 20 Strip | ASME SB-463, ASME SB-464, ASTM B 463, ASTM B 464 |
| Alloy 20 Wire | ASME SB-473 ASME SB-366, ASTM B 473, ASTM B 366 |
| Alloy 20 Weld Wire | AWS ER320LR, ASTM Weld Tube B468 |
| Alloy 20 Weld Pipe | ASTM B464 |
| Alloy 20 Other | UNS N08020, Werkstoff Nr. 2.4660, Covered Electrodes AWS E320LR, Fordings ASTM B462 |
Harsh steel is a major stockist and Exporter of Alloy 20 to many countries of the world such as Singapore, Brisbane, Sydney, Melbourne, Australia, Houston, TX, San Diego, San Francisco, Atlanta, USA, Brentford, United Kingdom, Phoenix, Ireland, New Zealand and Canada, Western Australia , Queensland, New South Wales, South Australia, Victoria, Australian Capital Territory, Tasmania, Northern Territory, Ontario, British Columbia, Yukon Territory, Alberta, Manitoba, Saskatchewan, Newfoundland, Prince Edward Island, New Brunswick, Nova Scotia, Eastern Cape, Gauteng, Kwazulu-Natal, Western Cape, England, Scotland, Wales, Northern Ireland, Lagos, Abuja Capital Territory, Vadodara, Mumbai, Chennai, New Delhi, Mahape, Gurgaon, Noida, Bangalore, Coimbatore, Cochin, Ash Sharqiyah, Ar Riyad, Makkah, Dhahran, Riyadh, Jiddah, Jeddah, Masqat, Kwazulu-Natal, Gauteng, Western Cape, Free State, Eastern Cape, Alberta, Saskatchewan, British Columbia, Newfoundland, New Brunswick, Manitoba, Ontario, Nova Scotia, Quebec, Calgary, Edmonton, Vancouver, Toronto, Birmingham, Brentford, Manchester, Bristol, Sheffield, Milton Keynes, London, Poplar, Edinburgh, Thames Ditton.