Nickel alloy with a very low coefficient of thermal expansion.
Invar is a nickel-iron alloy known for its exceptionally low coefficient of thermal expansion. Its ability to maintain dimensional stability across temperature changes makes it particularly valuable for precision components where even small dimensional changes can affect performance.
Invar is commonly CNC machined for aerospace, optics, electronics, metrology, tooling, and precision engineering applications. It can maintain tight dimensional requirements in environments where temperature fluctuations would cause conventional metals to expand or contract significantly.
Although Invar offers excellent dimensional stability, its relatively low thermal conductivity and work-hardening characteristics require appropriate machining techniques. Proper tooling, cutting parameters, workholding, and cooling can help achieve accurate and consistent results.
Available Invar at Elite Mold Tech:
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Property Value Mechanical Properties Ultimate tensile strength 450 – 480 MPa Yield
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