Alloy R41 (UNS N07041) Properties and Applications

# Alloy R41 (UNS N07041) Properties and Applications

Introduction to Alloy R41

Alloy R41, also known by its UNS designation N07041, is a nickel-based superalloy renowned for its exceptional high-temperature strength and corrosion resistance. This precipitation-hardening alloy finds extensive use in demanding aerospace and industrial applications where performance under extreme conditions is critical.

Chemical Composition

The composition of Alloy R41 contributes significantly to its remarkable properties:

• Nickel (Ni): 40-44%
• Chromium (Cr): 18-20%
• Cobalt (Co): 10-12%
• Molybdenum (Mo): 9-10.5%
• Aluminum (Al): 1.4-1.8%
• Titanium (Ti): 3.0-3.5%
• Iron (Fe): ≤5%
• Carbon (C): ≤0.08%

Mechanical Properties

Alloy R41 exhibits outstanding mechanical characteristics:

Physical Properties

The physical characteristics of Alloy R41 include:

• Density: 8.22 g/cm³ (0.297 lb/in³)
• Melting Range: 1,330-1,360°C (2,426-2,480°F)
• Thermal Conductivity: 11.4 W/m·K (79 BTU·in/hr·ft²·°F)
• Electrical Resistivity: 1.28 μΩ·m

Key Advantages

Alloy R41 offers several notable benefits:

• Excellent high-temperature strength up to 980°C (1,800°F)
• Superior oxidation and corrosion resistance
• Good fatigue and creep resistance
• Maintains mechanical properties after prolonged exposure to high temperatures

Keyword: Alloy R41 UNS N07041

• Weldable using appropriate techniques

Heat Treatment

Alloy R41 achieves its optimal properties through a specific heat treatment process:

1. Solution treatment at 1,095-1,120°C (2,000-2,050°F)
2. Rapid cooling (air or faster)
3. Aging at 760°C (1,400°F) for 16 hours

Applications

The unique combination of properties makes Alloy R41 suitable for various demanding applications:

Aerospace Industry

• Gas turbine engine components
• Combustion chambers
• Afterburner parts
• Rocket engine components

Industrial Applications

• High-temperature fasteners
• Nuclear reactor components</li