Name: Alloy 600
Brand: Ever Nickel
Price: 99.99 USD
Availability: InStock
Rating: 4.8 (50 reviews)

Alloy 600

Alloy 600, a nickel-chromium-iron, solid solution strengthened alloy, is designed for applications needing resistance to corrosion and high temperatures. This alloy operates effectively across a wide range of temperatures, from cryogenic levels up to 2000°F. It is notable for its good workability, weldability, and high strength.

W.Nr. 2.4816

UNS N06600

AWS 010

AMS 5665

AMS 5687

ASTM B166

BS 3075 NA 14

BS 3076 NA 14

DTD 328A

QQ-W-390

Industries and Applications

Alloy 600's unique characteristics make it highly valuable across various sectors. In the chemical process industry, it is used for heaters, condensers, and trays. The heat-treat industry employs it in muffle furnaces, retorts, baskets, and furnace fixtures. Within the aerospace sector, it is integral to exhaust liners, turbine seals, and airframe components. Due to its excellent corrosion resistance in high purity water, it is also prevalent in the nuclear industry.

Corrosion Resistance

Containing a minimum of 72% nickel, Alloy 600 is resistant to many organic and inorganic compounds and offers robust corrosion resistance in reducing environments. Its high nickel content reduces the risk of stress corrosion cracking when annealed and enhances resistance to carburizing, nitriding, and thermal fatigue, all while maintaining its ductility due to its austenitic structure. The alloy's increased chromium content provides resistance to sulfur compounds at high temperatures and oxidizing conditions in corrosive environments. Exceptionally, Alloy 600 maintains good resistance in strong solutions of magnesium chloride at elevated temperatures, with typical corrosion rates around 1 mpy. For severe service conditions, it is recommended that the material be fully stress relieved prior to use.

Fabrication and Heat Treatment

Alloy 600 can be formed both hot and cold using standard processes. Hot working should occur between 1600°F and 2250°F, with avoidance of the range between 1200°F and 1600°F due to reduced ductility. Its rate of work hardening is slower than that of 304 stainless steel but faster than mild steel. Welding can be performed using shielded metal-arc welding with AWS ENiCrFe-3 electrode, and AWS ERNiCr-3 filler metal is suitable for TIG and MIG welding. Machining Alloy 600 requires heavy-duty equipment, sharp tools, and proper cutting fluids, and it is slightly more machinable than 304 stainless steel. Annealing can be done at 1850°F for 15 minutes to achieve a fine grain structure, which enhances the material's corrosion resistance and mechanical properties.

Chemical Composition

The chemical composition of Inconel^® 600 is indicated in the table below:

Element	Min %	Max %
Ni	72.00	–
Cr	14.00	17.00
Fe	6.00	10.00
Mn	–	1.00
C	–	0.10
Cu	–	0.50
Si	–	0.50
S	–	0.015
P	–	0.04
Co	–	1.00
Nb/Cb	–	1.00
Ti	–	0.50
Ta	–	0.05
AI	–	0.35

Alloy Details

Inconel^® 600 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:

Density	Melting Point	Coefficient of Expansion	Modulus of Rigidity	Modulus of Elasticity
8.47 g/cm³	1413 °C	13.3 μm/m °C (20 – 100 °C)	75.6 kN/mm²	206 kN/mm²
0.306 lb/in³	2575 °F	7.4 x 10-6 in/in °F (70 – 212 °F)	10965 ksi	29878 ksi

Heat treatment of finished parts

The typical heat treatment of Inconel^® 600:

Condition as supplied by AWI	Type	Temperature	Time	Cooling
Annealed or Spring Temper	Stress Relieve	460 °C (860 °F)	1hr	Air

Properties

The typical mechanical properties of Inconel^® 600:

Annealed
Approx. tensile strength	<900 N/mm²	<131 ksi
Approx. operating temperature depending on load** and environment	-200 to +1000 °C	-330 to +1830 °F

Spring Temper
Approx. tensile strength	900 – 1450 N/mm²	131 – 210 ksi
Approx. operating temperature depending on load** and environment	-200 to +1000 °C	-330 to +1830 °F

Slight magnetism may occur below 120 °C (184 °F)

A brief history of Alloy 600

Originally developed in the mid-20th century, Alloy 600 was designed as a nickel-chromium-iron alloy to provide superior corrosion resistance and high-temperature performance. This solid solution strengthened alloy became widely recognized for its ability to withstand extreme environments, including oxidizing and reducing conditions, across a broad temperature range. Its combination of workability, weldability, and high strength solidified its role in multiple industries, including chemical processing, aerospace, and nuclear energy.

Common applications

Alloy 600 is widely utilized across various industries. In the chemical process industry, it is used in heaters, condensers, and distillation trays due to its ability to resist corrosion in harsh chemical environments. The heat-treating industry employs Alloy 600 in components like furnace muffles, retorts, and baskets for its durability at elevated temperatures. In the aerospace sector, it is used for turbine seals, exhaust liners, and structural airframe components. Additionally, its exceptional corrosion resistance in high-purity water has made it a standard material for nuclear reactor components.

Resistance to corrosion and heat

Alloy 600’s high nickel content (minimum 72%) provides excellent resistance to many organic and inorganic compounds, as well as reducing environments. This alloy is highly resistant to stress corrosion cracking in chloride environments and demonstrates superior resistance to carburizing and nitriding atmospheres. Increased chromium content offers protection against sulfur compounds and oxidizing agents, even at elevated temperatures. The alloy also performs exceptionally well in alkaline environments and is one of the few materials suitable for use in magnesium chloride solutions at elevated temperatures, with a typical corrosion rate of approximately 1 mpy.

Modern Innovations

Advancements in fabrication techniques have enabled Alloy 600 to maintain its relevance in modern engineering applications. Its adaptability to both traditional and additive manufacturing processes allows for the production of complex components with improved precision. Additionally, the alloy continues to be utilized in demanding environments, such as nuclear power plants and chemical refineries, where its corrosion resistance and mechanical stability under high temperatures make it a reliable choice.