4J36 Rod Invar Alloy Bar Fe Ni Alloy Controlled Expansion Material

Product Description

4J36 alloy rod, also known as Invar 36, is a low expansion Fe-Ni alloy containing about 36% nickel. It is widely recognized for its extremely low coefficient of thermal expansion (CTE) around room temperature.

This property makes 4J36 ideal for applications requiring dimensional stability under temperature fluctuations, such as precision instruments, measuring devices, aerospace, and cryogenic engineering.

Key Features

• Fe-Ni controlled expansion alloy (Ni ~36%)

• Very low thermal expansion coefficient

• Excellent dimensional stability

• Good machinability and weldability

• Available in rods, wires, sheets, and custom forms

Typical Applications

• Precision measuring instruments

• Optical and laser system components

• Aerospace and satellite structures

• Electronic packaging requiring dimensional stability

• Cryogenic engineering devices

• Standards of length, balance springs, precision pendulums

Chemical Composition (%)

Physical and Performance Properties

Available Specifications

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.