Product Description

4J36 strip, also known as Invar 36, is a low-expansion iron-nickel alloy composed of approximately 36% nickel and 64% iron. It exhibits an extremely low coefficient of thermal expansion in the temperature range of −60°C to 250°C, making it highly suitable for precision instruments and sealing applications.

This strip alloy conforms to ASTM F1684 and is widely used in manufacturing electronic supports, glass-to-metal seals, thermostat components, aerospace instruments, and precision optical systems. Its dimensional stability and excellent mechanical properties under thermal stress make it a preferred material for applications requiring minimal deformation under temperature changes.

Key Features

• Exceptionally low thermal expansion from cryogenic to ~250°C

• Excellent dimensional stability and formability

• Good machinability and weldability

• High structural integrity in vacuum and sealed environments

• Compatible with glass and ceramic sealing processes

• Available in precision thicknesses with bright surface finish

Typical Applications

• Glass-to-metal sealed enclosures and headers

• Shadow masks and structural parts for CRTs and sensors

• Aerospace and aviation instrumentation

• Bimetal thermostatic components

• Electronic scale frames and supports

• Precision molds and measurement tools

• Laser/optical mounting brackets

Chemical Composition (%)

Mechanical Properties (Annealed Condition)

Available Specifications

Packaging & Shipping:

• Packaging:
  Plastic spools, vacuum bags, anti-rust wrapping, and customized labels upon request

• Shipping Methods:
  Air freight, sea freight, express delivery

• Lead Time:

• 
  7–15 working days based on order quantity

Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.

Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, high-purity magnesium, magnesium plate, magnesium die casting, magnesium extrusion profiles and other metal magnesium and deep processing products.

Thermal spray wire Division offers a wide variety of pure metal and metal alloy wires, including nickel-, iron-, aluminum-, and zinc-based wires for thermal spray projects.

Fuctional Material Division supply electronic packaging COMPONENTS(GTMS, CTMS), soft magnetic alloys and bimetal strip.

Our company is certified by ISO9001 quality system and ISO14001 environmental protection system.

Mission Statement

We try our best to understand and utilize information within the environment. With this competency, we assist customers to create added value and contribute to the development of industry and healthy living.

We strive for "Best, " welcome challenges, and are relentless till we deliver products and solutions.