Guide to Using Inconel Alloy 600

Guide to Using Inconel Alloy 600

 

Guide to Using Inconel Alloy 600

Inconel 600 is a nickel-chromium alloy known for its high-temperature strength, oxidation resistance, and corrosion resistance, particularly in chloride/alkaline environments. It is widely used in heat treatment, nuclear, and chemical industries. Key considerations for its use include: a hot working temperature range of 1900-2250°F, with processing to be avoided in the 1200-1600°F range; the use of carbide tools during machining; stress relief treatment after processing to prevent cracking; and awareness of its poor performance in high-temperature concentrated nitric acid or high-sulfur environments. To ensure reliability, it is crucial to verify the authenticity of the material and adhere to industry standards such as ASTM.

How to heat treat Alloy 600?

Heat Treatment

Alloy 600 is not an age-hardenable alloy; cold working is the only viable hardening method. The annealing softening process begins at approximately 1600°F (871°C) and is essentially complete after heating at 1800°F (982°C) for 10 to 15 minutes.

 

Inconel 600 alloy has the designation UNS N06600 and material number 2.4816. It is a standard engineering material with excellent heat and corrosion resistance.

Inconel 600 possesses superior strength and is easily formed. It can also be hardened and strengthened through cold working. Inconel 600 alloy is non-magnetic and resistant to a wide range of corrosive media.

Standard product forms include tubes, plates, strips, sheets, round bars, flat bars, forgings, hexagonal bars, wires, and extruded profiles.

Gnee Steel stocks a wide range of nickel alloys in various sizes. Nickel alloy materials can be supplied in random lengths or cut and processed to customer-specified dimensions. We offer customized solutions to meet specific material specifications. To purchase or learn more about Inconel alloys, please contact us today, and we will get back to you as soon as possible.

Chemical Composition of Inconel 600

Inconel Alloy 600 Characteristics
1. Excellent corrosion resistance to reducing, oxidizing, nitric acid, and other media.
2. Good resistance to stress corrosion cracking at both room and elevated temperatures.
3. Good corrosion resistance to dry chlorine and hydrogen chloride.
4. Good mechanical properties at sub-zero, room, and elevated temperatures.
5. Good creep rupture strength, recommended for service environments at 700°C or above.

Inconel Alloy 600 High-Temperature Applications
Inconel Alloy 600 is widely used in furnaces and heat treatment applications, such as for crucibles, boxes, muffles, wire mesh belts, roller hearth furnaces, and other similar components requiring resistance to oxidation and corrosion from furnace atmospheres. Due to its resistance to nitrogen at high temperatures, this alloy is a standard material for nitriding containers.

Inconel Alloy 600 resists sulfide attack at moderate temperatures, but sulfidation will occur in high-temperature sulfur-containing environments. Molybdenum disulfide is a lubricant sometimes used to aid in part assembly; however, it should not be used if the material will subsequently be exposed to temperatures above 800°F (427°C).

Processing Instructions
Inconel Alloy 600 can be easily formed by hot or cold working and can be joined by standard welding, brazing, and soldering processes. While the alloy can only be hardened and strengthened by cold working, a variety of mechanical properties can be obtained in the finished part by combining cold working and heat treatment.

Heat Treatment
The alloy's properties during heating are affected by several interacting variables: amount of cold work, grain size, chemical composition, and material dimensions. Therefore, the time and temperature for heat treatment usually need to be determined experimentally.

Heating and Pickling
Like all nickel-based alloys, Inconel Alloy 600 must be cleaned before heating and must be heated in a sulfur-free atmosphere. The furnace atmosphere for forging or open annealing should be slightly reducing to prevent excessive oxidation. The cooling rate after heating has little effect on the mechanical properties of Inconel 600 alloy. However, the alloy is susceptible to carbide precipitation in the temperature range of 1000° to 1400°F (540 to 760°C), so if the material is to be pickled or used in an environment where sensitization must be avoided, it should be cooled rapidly through this temperature range. The alloy can only be bright-heated in very dry hydrogen or vacuum, and pickling is usually necessary if a bright surface is required.

Hot and Cold Working
The normal hot working temperature range for Inconel 600 alloy is 1600° to 2250°F (870° to 1230°C). Heavy hot working should be performed between 1900° and 2250°F (1040° and 1230°C); light working can continue down to 1600°F (870°C). The alloy has lower ductility in the temperature range of 1200° to 1600°F (650° to 870°C) and should not be worked in this range.
Improved tensile properties can be obtained by careful working at temperatures below 1200°F (650°C).
Inconel 600 alloy can be cold formed using standard processes used for steel and stainless steel.

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

Inconel Alloy 600

Nickel Alloy 600 Pipe Packing