Haynes 25 (UNS R30605)

Haynes 25 Product Introduction

Overview:
Haynes 25 (UNS R30605), also known as L605, is a cobalt-based superalloy renowned for its exceptional strength, oxidation resistance, and wear resistance, especially in high-temperature environments. This alloy is widely used in applications requiring a combination of excellent mechanical properties, corrosion resistance, and thermal stability, such as aerospace, power generation, and chemical processing industries.

Key Features:

High-Temperature Strength:

• Retains outstanding tensile strength and creep resistance at temperatures up to 980°C (1800°F).

Oxidation Resistance:

• Excellent resistance to oxidation and scaling at temperatures up to 1095°C (2000°F).

Wear and Galling Resistance:

• Superior resistance to wear and galling, making it suitable for applications involving sliding or rotating contact.

Corrosion Resistance:

• Resists attack from oxidizing and reducing environments, including acids and hot gases.

Fabrication:

• Good formability and weldability, allowing it to be manufactured into complex components.

Chemical Composition (Typical):

• Cobalt (Co): Balance (~50%)
• Chromium (Cr): 19–21%
• Nickel (Ni): 9–11%
• Tungsten (W): 14–16%
• Iron (Fe): ≤3%
• Carbon (C): 0.05–0.15%
• Silicon (Si): ≤0.4%
• Manganese (Mn): 1–2%

Applications:

Aerospace Industry:

• Gas turbine engine components, such as combustors, turbine blades, and afterburners.

Power Generation:

• Heat exchangers and turbine components in high-temperature systems.

Nuclear Industry:

• Structural components in reactor systems due to its excellent thermal stability and radiation resistance.

Chemical Processing:

• Equipment exposed to corrosive and high-temperature conditions, such as reactors and furnace components.

Medical Industry:

• Components in medical implants and surgical tools requiring biocompatibility and wear resistance.

Physical Properties:

• Density: 9.13 g/cm³
• Melting Range: 1330–1410°C (2425–2570°F)
• Thermal Conductivity: 12.5 W/m·K (at room temperature)
• Elastic Modulus: ~229 GPa

Standards and Specifications: Haynes 25 complies with a variety of industry standards, including:

• AMS 5537: Sheet and Strip
• AMS 5759: Bar and Forging
• ASTM F90: Medical and Surgical Applications

Advantages:

• Combines strength, wear resistance, and oxidation resistance at elevated temperatures.
• Resistant to carburization and sulfidation in aggressive environments.
• Long service life, reducing maintenance and operational costs.
• Highly versatile for demanding applications across industries.

Conclusion:
Haynes 25 (UNS R30605) is a top-tier material for extreme conditions where other alloys fail. Its balance of strength, corrosion resistance, and thermal stability makes it indispensable for high-performance applications in aerospace, energy, and chemical industries.

For tailored recommendations or additional technical details, feel free to contact your material supplier or expert.