Supreme Steels

Alloy 25-6 Mo

Alloy 25-6 Mo - High-Performance Duplex Stainless Steel

Alloy 25-6 Mo is a high-strength, corrosion-resistant duplex stainless steel that contains a significant amount of molybdenum and other alloying elements. It is specifically designed for applications where high resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) is required, particularly in highly corrosive environments such as seawater, chemicals, and high-chloride environments. The alloy’s duplex structure (a mix of austenitic and ferritic phases) gives it improved strength and toughness compared to conventional stainless steels, while maintaining excellent corrosion resistance.

Alloy 25-6 Mo is particularly used in applications in marine environments, chemical processing, and oil and gas industries, where resistance to aggressive media like chloride is crucial.

Features of Alloy 25-6 Mo:

Specifications:

These specifications highlight the alloy’s broad use in applications requiring high resistance to corrosion and stress corrosion cracking, particularly in marine and chemical processing industries.

Composition of Alloy 25-6 Mo:

Element Percentage
Nickel (Ni) 24.0-26.0%
Chromium (Cr) 24.0-26.0%
Molybdenum (Mo) 5.0-6.0%
Iron (Fe) Balance
Copper (Cu) 0.50% Max
Carbon (C) 0.02% Max
Manganese (Mn) 1.5% Max
Silicon (Si) 0.5% Max
Sulfur (S) 0.03% Max
Phosphorus (P) 0.04% Max

Physical Properties:

Property Value
Density 7.9 g/cm³
Melting Point 1350-1400°C (2462-2552°F)
Hardness (BHN) 290-330 BHN
Tensile Strength 620 MPa (90,000 psi)
Yield Strength 450 MPa (65,000 psi)
Elongation 25%
Modulus of Elasticity 200 GPa
Thermal Conductivity 15.3 W/m·K
Coefficient of Thermal Expansion 15.3 x 10^-6 /°C