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Alloy 20 Plate

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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

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.

 
Alloy 20 Plate Grade and Specification
StandardASTM,AISI, AMS,MLS,EN,JIS,DIN,GOST, ASTM / ASME SB 162 UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201) ,ASTM / ASME SB 127 UNS 4400 (MONEL 400) ,ASTM / ASME SB 424 UNS 8825 (INCONEL 825) ,ASTM / ASME SB 168 UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), ASTM / ASME SB 443 UNS 6625 (INCONEL 625), ASTM / ASME SB 574 UNS 10276 (HASTELLOY C 276) ,ASTM / ASME SB 462 UNS 8020 (ALLOY 20 / 20 CB 3)
Thickness1.2-100mm
Width1000-1500mm
Length1000-6000mm
Surface2B, No.3, No.4, HL, BA, 8K
Manufacturing processHot rolled, cold rolled
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