Inconel 600/601 (2.4816/2.4851)

Inconel 600 and 601 are valued for their combination of strength, ductility, and long-term performance under heat and chemical stress. These properties ensure safe operation in environments involving pressure, temperature fluctuation, and corrosive exposure.

Typical Mechanical Properties:

Tensile Strength: 550–760 MPa - Provides excellent resistance to tensile loading in high-temperature applications such as reactors and process piping.

Yield Strength (0.2% proof): ~240 MPa - Allows structural components to retain form and stability under load without permanent deformation.

Elongation at Break: 30–45% - Offers outstanding ductility, enabling fabrication, welding, and cold forming without cracking.

Hardness (Brinell): ~160–200 HB - Balances strength with workability, supporting reliable machining and long component life.

Modulus of Elasticity: ~207 GPa - Ensures rigidity and structural integrity across both static and thermally dynamic systems.

These traits make Inconel 600/601 dependable choices for furnace components, fasteners, chemical plant hardware, and high-pressure vessels.

These alloys retain consistent physical behaviour across a wide range of service temperatures and environmental conditions, making them ideal for thermal systems and process environments where dimensional and electrical stability is key.

Typical Physical Properties:

Density: 8.47 g/cm³ - Suitable for pressure-rated systems that require moderate-weight, high-strength materials.

Melting Range: 1354–1413 °C - Offers thermal security in applications involving continuous or peak heat exposure.

Thermal Conductivity: ~14.8 W/m·K - Enables efficient heat transfer in reactor linings, heat shields, and exhaust ducting.

Thermal Expansion Coefficient: ~13.3 × 10⁻⁶/K - Provides dimensional consistency under thermal cycling, preventing warping or fatigue cracking.

Electrical Resistivity: ~1.03 µΩ·m - Performs reliably in electrical heating elements or electrochemical environments.

Together, these physical traits support high-integrity operation in exhaust systems, steam generators, and thermally stressed containment systems.

While each has specific strengths, there are several closely related alternatives that offer different balances of mechanical strength, oxidation resistance, and corrosion performance to suit specialised environments.

Inconel 625 (UNS N06625): Offers superior strength and enhanced resistance to both oxidising and reducing environments. Preferred for its high fatigue resistance and broad corrosion protection in chemical and marine systems.

Inconel 718 (UNS N07718): A precipitation-hardened superalloy used where high tensile strength and creep resistance are required — especially in aerospace and high-pressure turbine applications.

Alloy 800H/800HT (UNS N08810 / N08811): Nickel-iron-chromium alloys designed for structural stability at high temperatures. Often selected for furnace components and petrochemical heat exchangers.

Hastelloy X (UNS N06002): Offers excellent oxidation resistance and good formability at elevated temperatures, making it ideal for jet engine parts and other aerospace applications.

Alloy 602CA: A high-temperature alloy with extreme oxidation resistance due to its high chromium and aluminium content. Commonly used in heat treatment and thermal processing equipment.

These grades give engineers the flexibility to fine-tune performance based on required mechanical loads, corrosive exposure, and thermal conditions, all while maintaining the integrity and reliability expected from nickel-based superalloys.