Supreme Steels

Alloy 825

Product Description:

Alloy 825 is a corrosion-resistant, nickel-iron-chromium alloy that is highly resistant to a variety of harsh environments, including acidic, alkaline, and aqueous media. It is composed primarily of nickel, chromium, iron, and molybdenum, which provide excellent resistance to corrosion, particularly in sulfuric, phosphoric, and nitric acids, as well as to pitting and crevice corrosion. Alloy 825 is highly versatile and is used in industries such as chemical processing, oil and gas, pollution control, and marine environments.

The alloy is also known for its excellent weldability, formability, and resistance to stress corrosion cracking. These characteristics make it suitable for both high- and low-temperature environments, making it ideal for a wide range of applications, particularly in aggressive environments.

Features of Alloy 825:

Specifications:

These specifications highlight Alloy 825’s broad range of industrial applications, ensuring its compatibility with various standards for pressure vessels, chemical equipment, and other industrial machinery.

Composition of Alloy 825:

Element Percentage
Nickel (Ni) 38.0-46.0%
Chromium (Cr) 19.5-23.5%
Iron (Fe) Balance
Molybdenum (Mo) 2.5-3.5%
Copper (Cu) 1.0-3.0%
Titanium (Ti) 0.6-1.2%
Aluminum (Al) 0.2% Max
Carbon (C) 0.05% Max
Manganese (Mn) 1.0% Max
Silicon (Si) 0.5% Max
Sulfur (S) 0.03% Max
Phosphorus (P) 0.04% Max

Physical Properties:

Property Value
Density 8.0 g/cm³
Melting Point 1300-1350°C (2372-2462°F)
Hardness (BHN) 200-250 BHN
Tensile Strength 550 MPa (80,000 psi)
Yield Strength 240 MPa (35,000 psi)
Elongation 30%
Modulus of Elasticity 200 GPa
Thermal Conductivity 14.9 W/m·K
Coefficient of Thermal Expansion 16.5 x 10^-6 /°C