X11CrMoWVNb9-1-1 / 1.4905 Stainless Steel

Stainless Steel 1.4905 / X11CrMoWVNb9-1-1: High-Tech Material for Extreme Conditions

General Technical Characteristics

Stainless steel 1.4905 (X11CrMoWVNb9-1-1) is a high-alloy chromium-molybdenum alloy designed for operation under high temperatures and aggressive environments. The steel grade is characterized by exceptional heat resistance and high-temperature strength.

Chemical Composition

Chemical composition of 1.4905 steel includes:

• Chromium (Cr): 9-11%
• Molybdenum (Mo): 0.9-1.1%
• Tungsten (W): 0.9-1.1%
• Vanadium (V): up to 0.2%
• Niobium (Nb): up to 0.1%
• Carbon (C): up to 0.12%

Unique combination of alloying elements ensures high corrosion resistance and thermal stability.

Mechanical Properties

Key mechanical characteristics:

• Yield strength: 340-420 MPa
• Tensile strength: 540-700 MPa
• Elongation: 20-25%
• Brinell hardness: 170-220 HB

Steel demonstrates excellent resistance to creep and mechanical loads at high temperatures.

Areas of Application

Stainless steel 1.4905 is used in:

• Power engineering
• Petrochemical industry
• Steam turbine manufacturing
• Chemical equipment
• Heat exchange devices

Material Features

Advantages of 1.4905 steel:

• High heat resistance up to 600°C
• Resistance to corrosive and erosive wear
• Good machinability
• Structure stability under long-term loads
• Oxidation resistance in aggressive environments

Effective in temperature range from -50°C to +600°C.

Conclusion

Stainless steel 1.4905 / X11CrMoWVNb9-1-1 is a high-tech material for critical applications under extreme temperatures and loads.

Forms of delivery of steel products EN 1.4905 / X11CrMoWVNb9-1-1