Alloy 28 / UNS N08028

Grade: Incoloy 028 / Alloy 28 / UNS N08028

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 28 is a high corrosion resistant nickel-iron-chromium alloy containing molybdenum and copper. It offers outstanding resistance to sulfuric acid, phosphoric acid, chloride corrosion and stress corrosion cracking. It is widely used where conventional stainless steels cannot provide sufficient corrosion protection.

Chemical Composition (%)

Element Content
Ni 30-34
Cr 26-28
Fe Balance
Mo 3-4
Cu 1-1.4
Mn ≤2.5
C ≤0.03

Common Standards

Product Form Standard
Plate ASTM B463
Bar ASTM B473
Pipe/Tube ASTM B729
Welded Pipe ASTM B464
Fittings ASTM B366

Mechanical Properties (Typical)

Property Value
Tensile Strength ≥550 MPa
Yield Strength ≥240 MPa
Elongation ≥40%
Hardness Typical ≤90 HRB

Application areas

  • Chemical reactors
  • Acid production equipment
  • Offshore systems
  • Heat exchangers
  • Pollution control equipment

Alloy 28 is a high corrosion resistant nickel-iron-chromium alloy containing molybdenum and copper. It offers outstanding resistance to sulfuric acid, phosphoric acid, chloride corrosion and stress corrosion cracking. It is widely used where conventional stainless steels cannot provide sufficient corrosion protection.

Chemical Composition (%)

Element Content
Ni 30-34
Cr 26-28
Fe Balance
Mo 3-4
Cu 1-1.4
Mn ≤2.5
C ≤0.03

Common Standards

Product Form Standard
Plate ASTM B463
Bar ASTM B473
Pipe/Tube ASTM B729
Welded Pipe ASTM B464
Fittings ASTM B366

Mechanical Properties (Typical)

Property Value
Tensile Strength ≥550 MPa
Yield Strength ≥240 MPa
Elongation ≥40%
Hardness Typical ≤90 HRB

Application areas

  • Chemical reactors
  • Acid production equipment
  • Offshore systems
  • Heat exchangers
  • Pollution control equipment
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