Alloy 20/UNS N08020

Grade: Incoloy 020 / UNS N08020 / Alloy 20

Sheet/Plate: 0.3mm-150mm

Strip/Foil: 0.02mm-16mm

Pipe: 6mm*0.5mm-1200mm*100mm

Bar: Ф6mm – Ф600mm

Wire: Ф0.01mm – Ф6mm

Others: Forged Rings, Flanges, Elbows, Tees, Reducers etc.

Standard: ASTM/ASME/AMS

Alloy 20 is a nickel-iron-chromium alloy stabilized with niobium and enhanced with copper and molybdenum. It provides excellent resistance to sulfuric acid, chloride environments, pitting and crevice corrosion. The alloy combines good fabrication characteristics with reliable performance in severe chemical processing applications.

Chemical Composition (%)

Element Content
Ni 32-38
Cr 19-21
Fe Balance
Mo 2-3
Cu 3-4
Nb Cb+Ta ≤1
Mn ≤2
Si ≤1
C ≤0.07

Common Standards

Product Form Standard
Plate/Sheet ASTM B463 / ASME SB463
Bar ASTM B473 / ASME SB473
Seamless Pipe ASTM B729 / ASME SB729

Mechanical Properties (Typical)

Property Value
Tensile Strength ≥620 MPa
Yield Strength (0.2%) ≥275 MPa
Elongation ≥40%
Hardness Typical ≤95 HRB

Application areas

  • Chemical processing equipment
  • Sulfuric acid plants
  • Pharmaceutical equipment
  • Heat exchangers
  • Pulp and paper industry

Alloy 20 is a nickel-iron-chromium alloy stabilized with niobium and enhanced with copper and molybdenum. It provides excellent resistance to sulfuric acid, chloride environments, pitting and crevice corrosion. The alloy combines good fabrication characteristics with reliable performance in severe chemical processing applications.

Chemical Composition (%)

Element Content
Ni 32-38
Cr 19-21
Fe Balance
Mo 2-3
Cu 3-4
Nb Cb+Ta ≤1
Mn ≤2
Si ≤1
C ≤0.07

Common Standards

Product Form Standard
Plate/Sheet ASTM B463 / ASME SB463
Bar ASTM B473 / ASME SB473
Seamless Pipe ASTM B729 / ASME SB729

Mechanical Properties (Typical)

Property Value
Tensile Strength ≥620 MPa
Yield Strength (0.2%) ≥275 MPa
Elongation ≥40%
Hardness Typical ≤95 HRB

Application areas

  • Chemical processing equipment
  • Sulfuric acid plants
  • Pharmaceutical equipment
  • Heat exchangers
  • Pulp and paper industry
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