Alloy 20 Stainless Steel Products

UNS N08020, ASTM B473

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Alloy 20 Stainless Steel Products

alloy-20Alloy 20 stainless steel is a super-austenitic stainless alloy developed for maximum corrosion resistance to sulfuric acid and other aggressive environments not suitable for typical austenitic grades. 

Our Alloy 20 steel is a solution for stress corrosion cracking that can occur when stainless steel is introduced to chloride solutions. We supply Alloy 20 steel for a variety of applications and will help in determining the precise amount for your current project. Alloy 20 can be used for a wide variety of applications including: control valves, pressure relief valves, and centrifugal pumps. It is composed of carbon, chromium, copper, iron, manganese, molybdenum, nickel, phosphorous, silicon, and sulfur.

Best Stainless provides its customers with a vareity of alloy 20 steel stock shapes under the high quality standards of UNS N08020 and ASTM B473.

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Nickel-Alloy 20 Steel Mechanical Properties

ConditionUltimate Tensile
Strength (PSI)
0.2% Yield
Strength (PSI)
(% in 2in.)
Reduction Of
Area (%)
Annealed 80,000 35,000 30 50 * * Quote »

Nickel Alloy 20 Applications

Nickel Alloy 20 Composition

  • Carbon 0.070 Max
  • Chromium 19.0-21.0
  • Copper 3.0-4.0
  • Iron 29.85-44.0
  • Manganese 2.0 Max
  • Molybdenum 2.0-3.0
  • Nickel 32.0-38.0
  • Phosphorus 0.0450 Max
  • Silicon 1.00 Max
  • Sulfur 0.0350 Max

Industry Standards

  • UNS N08020
  • ASTM B473

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