Inconel® alloy 600

UNS N06600
W.Nr 2.4816


Springs, seals, and lockwire.


Inconel® 600 is a Nickel-Chromium-Iron alloy with good corrosion resistance, oxidation resistance, and high strength at high temperatures. Inconel® 600 is highly resistant to chloride-ion stress-corrosion cracking due to the high nickel content. Age-hardening treatments are not required, as Inconel® 600 is hardened and strengthened through cold work only. Inconel® 600 can operate from cryogenic temperatures to 700°F (370°C).

Industries Supplied

Chemical Processing, Thermal Processing, Nuclear, and Aerospace.

Nominal Composition

Cr: 14.0 - 17.0
Fe: 6.0 - 10.0
Mn: 1.0 max
Ni: 72 min
Cu: 0.5 max
Si: 0.5 max
C: 0.15 max
S: 0.015 max

Physical Properties

Density: 0.306 lb/in3, (8.47 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 31.1 x 103 ksi (214 GPa)

Modulus of Rigidity (G): 
At 70°F (20°C): 11.7 x 103 ksi (81.0 GPa)

Coefficient of Expansion:
7.9 µin/in.-°F (70°F to 600°F)
14.2 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 40.6 µΩ.in, (130 µΩ.cm)

Thermal Conductivity: 103 Btu-in/ft2hr-°F, (14.9 W/m-K)

Applicable Specifications

Wire & Bar: AMS 5665, AMS 5687, ASTM B166.

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 1925°F (1050°C)
    • Tensile Strength: 80 - 110 ksi; (552-758 MPa)
    • Suggested Operating Conditions: -300°F to 700°F (-184°C to 370°C)

  • Spring Temper
    • Tensile Strength: 160 – 200 ksi; (1103 – 1379 MPa)
    • Suggested Operating Conditions: -300°F to 700°F (-184°C to 370°C​)

INCONEL® is a registered trademark of the Special Metals Corporation group of companies.

For further information Contact:

Phone: 1 847 695 1900 
Elgiloy Specialty Metals - Wire Products
356 N.Cross Street
Sycamore, IL 60178 USA 

Inconel® 600 Wire Alloy

The Inconel® 600 wire alloy is a Nickel-Chromium-Iron alloy that features outstanding resistance to deterioration, oxidation, and excellent performance at extreme temperatures. The nickel content contained within the wire itself allows it to be almost entirely immune to chloride-ion stress-corrosion fracturing. Furthermore, because it is both hardened and strengthened through cold work processes, Inconel® 600 does not need age-hardening treatments. The cords within the wire can be made in square, flat, or shaped form, allowing for flexibility, and for use over a wide variety of platforms.

Because of its heat tolerance, being able to withstand temperatures up to 700 degrees, Inconel® 600 wire is mostly used in places where temperature might become an issue. This includes the engine of a high- performance automobile, including race cars, chemical, nuclear, and food processing locations, and also as gas turbine components. You will certainly find 600 in heat treatment fixtures, baskets, and trays. Engineers love the reliability that 600 wire can provide, and make it the go-to wire for all processes where increasing temperatures are present.

When it comes to the nuclear, chemical processing, and aerospace industries, they need to be able to rely on the machines that they are using, and the individual parts that operate that machinery. There is too much at stake if the machinery fails. That is why they use Inconel® 600 wire alloys in the construction of their machinery. If you look at the science behind it, it is easy to understand why.

Inconel® 600 wire alloys are also well-suited in areas that contain high pressure and kinetic energy due to its resistance to oxidation and corrosion. This is due to a thick and stable oxide layer that is formed when Inconel® wire is heated, preventing any further damage on the wire itself. This allows it to retain its strength in high temperatures, unlike aluminum and steel which suffer from thermally induced crystal vacancies. The strength at high temperatures comes from either solid solution strengthening or precipitation strengthening depending on which alloy you are using. In either method, the nickel in the wire is combined with small amounts of niobium. This creates a compound called gamma prime which inhibits the wire from slipping or creeping at high temperatures. This increases over time, even after 72 hours of exposure to extreme conditions.

Elgiloy is committed to only using quality products such as Inconel® 600 wire alloy because we believe that any job doing is worth doing right. Scientifically, it is easy to understand why you would want to use Inconel® wire when you are operating under extreme temperatures, but you can also see the difference practically as well. Other alloys tend to slip and creep when put under these extreme conditions. Inconel® 600 alloy does not have that problem and is designed to work how you need it to work. There is a reason why it is the trusted alloy from professionals who require perfection. Professionals who bet their lives on the machines that they are operating as in the aerospace or racing industries. This is why Elgiloy puts each and every alloy through stringent testing, and why this alloy wiring passes with flying colors.