
Alloy 20 is a highly alloyed austenitic stainless steel developed primarily for use in the sulfuricacid related processes. Alloy 20 is used is a wide variety of applications from Sulfuric acid pickling tanks, racks and heating coil, Heat Exchangers, Process piping, Chemical and petroleum process equipment etc.
Product description:
Alloy 20, a nickel-iron-chromium-austenite alloy with added copper and molybdenum, exhibits exceptional resistance to acid attack, particularly sulfuric acid. It offers excellent corrosion resistance against chloride-containing chemicals like sulfuric acid, phosphoric acid, and nitric acid, including resistance to chloride stress corrosion cracking. The presence of niobium prevents sensitization and intergranular corrosion. Alloy 20 is widely used in various industries, including chemical, food, dye, pharmaceutical, and plastics. It finds applications in heat exchangers, mixing tanks, metal cleaning, pickling equipment, and pipes. With its excellent corrosion resistance, mechanical properties, and ease of manufacture, Alloy 20 is a preferred choice in demanding environments.
UNS: N08020
W. NR.: 2.4660
ASTM: B 463, A 240, B 464, B 473, B 366
ASME: SB 463, SA 240, SB 464, SB 473, SB 366
Product features:
Application field:
Production of plastics and synthetic fibers
Chemical and petroleum processing equipment
Hybrid tank
Heat exchanger
Process pipeline
Chemical Composition:
牌号 Grade |
% | Ni | Cr | Fe | Mo | C | Mn | Si | S | Cu | P |
Alloy 20 | Min | 32 | 19 | Bal. | 2 | 3 | |||||
Max | 38 | 21 | 3 | 0.07 | 2 | 1 | 0.03 | 4 | 0.03 |
Mechanical Properties:
抗拉强度 Tensile Strength σb/MPa |
屈服强度 Yield Strength σp0.2/MPa |
延伸率 Elongation σ5 /% |
600 | 320 | 35 |
Standards:
棒材 Bar |
锻件 Forging |
板(带)材 Sheet/Strip |
线材 Wire |
ASTM B473 | ASTM B462 | ASTM B463 | ASTM B471 |
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