UNS N08926 - EN 1.4547

N08926. also known as Alloy 926. is a nickel-iron-chromium-molybdenum (Ni-Fe-Cr-Mo) alloy that belongs to the family of superaustenitic stainless steels. It is designed to provide exceptional corrosion resistance, particularly in environments with strong acids, hypochlorite solutions, and marine atmospheres.

National rules model：

Unified Numbering System (UNS): N08926

ASTM: UNS N08926

Chemical Composition:

Nickel (Ni): 39.0-44.0%

Iron (Fe): Balance

Chromium (Cr): 20.0-24.0%

Molybdenum (Mo): 5.0-6.5%

Copper (Cu): 1.5-3.0%

Manganese (Mn): ≤1.0%

Silicon (Si): ≤0.50%

Phosphorus (P): ≤0.03%

Sulfur (S): ≤0.02%

Carbon (C): ≤0.02%

Physical Properties:

Density: Approximately 8.2 g/cm³

Melting Point: Around 1360-1420°C

Thermal Expansion Coefficient: 13.7 x 10⁻⁶ /°C (at room temperature)

Mechanical Properties）:

Tensile Strength: 630-830 MPa

Yield Strength: 280-450 MPa, depending on temper

Elongation: 30-50%

Hardness: Approximately 160-240 HV

Application Areas:

Chemical Processing: Used in chemical equipment, reactors, and piping systems that handle highly corrosive chemicals.

Marine Applications: Suitable for marine environments due to its excellent resistance to pitting and crevice corrosion.

Pulp and Paper Industry: Resistant to the corrosive conditions in paper bleaching processes.

Waste Water Treatment: Used in components that are exposed to hypochlorite solutions.

Food Processing: Offered for use in equipment that handles acidic or chloride-containing foods where high resistance to stress corrosion cracking is required.

Desalination Plants: Employed in heat exchangers and other equipment due to its corrosion resistance to saline solutions.

N08926 is prized for its exceptional corrosion resistance and mechanical properties, making it a popular choice in demanding environments. The specific chemical composition, physical, and mechanical properties may vary depending on the source and manufacturing process, so the information provided is intended for general guidance.

Common Surfaces

Stainless Steel Standards Comparison Table