Invar 36® Superalloy
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Chemical Analysis |
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C |
.15 max |
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MN |
.60 max |
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P |
.006 max |
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S |
.004 max |
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Si |
.40 max |
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Cr |
.25 max |
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Ni |
36.0 nom |
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Co |
.50 max |
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Fe |
bal |
Common Trade Names: Invar 36®, Nilo 6®, Pernifer 6®
Invar 36® is a nickel-iron alloy that contains 36% nickel and possesses a rate of thermal expansion approximately one-tenth that of carbon steel. Alloy 36 maintains nearly constant dimensions over the range of normal atmospheric temperatures, and has a low coefficient of expansion from cryogenic temperatures to about 500¡ãF. This nickel iron alloy also retains good strength and toughness at cryogenic temperatures.
In addition, Invar 36® can be hot formed, cold formed or machined using processes similar to austenitic stainless steels.
Why Choose Invar 36®?
Invar alloys are widely known and utilized because they exhibit a coefficient of thermal expansion (CTE) that is close to zero. This beneficial quality has made UNS K93600 one of the most effective alloys for the manufacturing of precision instrumentation. Alloy 36 is generally thought of as the metal of choice for any type of low expansion application, because it has a very small CTE.