Supreme Steels

Alloy 20

Alloy 20 - Corrosion-Resistant Nickel-Iron-Chromium Alloy

Alloy 20 is a corrosion-resistant, nickel-based superalloy that is primarily composed of nickel, iron, chromium, and molybdenum. It was specifically designed to resist sulfuric acid and other highly corrosive environments. This alloy is renowned for its excellent resistance to a wide range of corrosive media, including acidic environments like sulfuric acid, phosphoric acid, and nitric acid, making it ideal for applications in chemical processing and other industries requiring superior corrosion resistance.

Alloy 20 is commonly used in industries such as chemicals, pharmaceuticals, and food processing. Its excellent mechanical properties, good weldability, and resistance to oxidation make it one of the preferred materials for manufacturing equipment and components that must endure harsh environments.

Features of Alloy 20:

Specifications:

These specifications indicate that Alloy 20 is suitable for a wide range of applications in industries such as chemical processing, pharmaceuticals, food processing, and others requiring corrosion-resistant materials.

Composition of Alloy 20:

Element Percentage
Nickel (Ni) 32.0-38.0%
Iron (Fe) Balance
Chromium (Cr) 19.0-21.0%
Molybdenum (Mo) 2.0-3.0%
Copper (Cu) 3.0-4.0%
Carbon (C) 0.07% Max
Manganese (Mn) 2.0% Max
Silicon (Si) 1.0% Max
Sulfur (S) 0.03% Max
Phosphorus (P) 0.04% Max

Physical Properties:

Property Value
Density 8.0 g/cm³
Melting Point 1375-1400°C (2500-2550°F)
Hardness (BHN) 200-250 BHN
Tensile Strength 520 MPa (75,000 psi)
Yield Strength 205 MPa (30,000 psi)
Elongation 40%
Modulus of Elasticity 200 GPa
Thermal Conductivity 14.9 W/m·K
Coefficient of Thermal Expansion 16.0 x 10^-6 /°C