Invar 36 / UNS K93600 Low-Expansion Alloy

Invar 36 products for U.S. buyers

Invar 36 is a controlled low-expansion nickel-iron alloy designated UNS K93600 and commonly associated with W.Nr. 1.3912. It is selected for components that must retain dimensional stability as temperature changes. Typical engineering uses include precision tooling, measuring equipment, optical and aerospace structures, molds, fixtures and selected cryogenic assemblies. The purchaser remains responsible for confirming suitability for the actual design temperature and service environment.

Product forms and specifications

Evek LLC reviews requirements for sheet, plate, strip, bar, rod, wire, tube and customer-specified blanks. Because thermal-expansion limits, heat treatment, dimensions and testing can differ by product form, the enquiry should identify the governing ASTM, AMS, customer or drawing specification and its revision. A grade name alone is not sufficient for a controlled-expansion application.

Information required for a quote

Send UNS K93600 or the approved designation, product form, specification, dimensions, condition, quantity, tolerances, surface finish, thermal-expansion or magnetic requirements, test temperature range and material test report requirements. For tube include OD, wall, length, construction and end finish.

Related controlled-expansion products

See Invar 36 sheet and strip, Invar 36 bar and wire and the precision-alloy catalog.

Request a U.S. quote

Evek LLC serves customers throughout the United States. Typical delivery is 2-3 weeks, subject to specification, form, dimensions, quantity and availability.

Contact Evek LLC with the complete requirement and U.S. delivery ZIP code.