Nickel alloy 600 steel: Applications after surface treatment
After surface treatments such as nitriding or coating, the application range of Inconel 600 (nickel alloy 600) is extended to more demanding fields, particularly in aerospace, nuclear energy, and chemical processing. With enhanced hardness, wear resistance, and corrosion resistance, it is used in components such as turbine blades, reactor parts, furnaces, and specialized heat exchangers, allowing it to surpass its inherent high-temperature strength and withstand extreme friction, high pressure, and harsh chemical environments.
Is Alloy 600 magnetic?
Alloy 600 is a non-magnetic material with excellent mechanical properties, combining high strength and good workability, and is easily welded. The cold-forming characteristics of Alloy 600 are similar to those of chromium-nickel stainless steel.
Chemical composition of Nickel 600 alloy
| Grade | Ni | Cr | Fe | Co | Mn | Cu | Si | C | S |
| 600 | ≥72.0[a] | 14.0–17.0 | 6.0–10.0 | N/A | ≤1.0 | ≤0.5 | ≤0.5 | ≤0.15 | ≤0.015 |
Physical properties of nickel 600 alloy
| Grade | Density (g/cm3) | Melting Point °C | Elastic Modulus (GPa) | Co-eff of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat ( J/Kg.K) | Electrical Resistivity (μΩ.m) |
|---|---|---|---|---|---|---|---|
| 21-93°C | At 20°F | ||||||
| Inconel 600 | 8.43 | 1413 | 207 | 13.3 | 14.8 | 500 | 1.04 |
Main Application Areas of Surface-Treated Nickel 600:
Aerospace: Nitriding treatment forms a hard surface layer, making it ideal for engine components (blades, discs, nozzles) and airframe components requiring extremely high wear resistance and heat resistance.
Nuclear Energy: Used in high-purity water systems, control rod tubes, and steam generator components, enhancing its inherent corrosion and radiation resistance.
Chemical Industry: Surface treatment enhances the corrosion resistance of reactor components, valves, and heat exchangers in corrosive chemicals (chlorinated hydrocarbons, acids) and high-temperature conditions.
Heat Treatment: Components such as reactors, baskets, and furnace parts benefit from enhanced oxidation and carburization resistance, which is crucial for processes such as nitriding.
Power Generation: Used in turbines, heat exchangers, and boiler components in high-temperature, corrosive environments, improving their durability.
Common Surface Treatment Methods:
Nitriding: Forms a hard, wear-resistant nitride layer, significantly improving the surface hardness and performance of high-friction, high-temperature components in aerospace and industrial applications.
Coatings (Thermal Spraying/Laser): Adds a protective layer to improve high-temperature oxidation resistance, wear resistance, and corrosion resistance, extending service life under extreme conditions.
Solution Annealing/Stress Relief: A heat treatment method (strictly speaking not a surface treatment, but it affects surface integrity) used to relieve internal stresses and improve resistance to stress corrosion cracking in corrosive/alkaline environments.
Why is Surface Treatment Necessary?
Although Alloy 600 is inherently strong, surface treatment can further enhance its specific properties:
Increased Hardness: Crucial for components subjected to wear and friction.
Enhanced Corrosion Resistance: Prevents corrosion caused by specific corrosive media (such as chlorides) and high-purity water.
Improved Wear Resistance: Essential for moving parts in engines and machinery.
Improved Oxidation/Carburization Resistance: Extends service life in furnace atmospheres and high-temperature applications.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Steel also supplies custom Inconel 600 products in various sizes and specifications. Please send us your drawings for a quote!
