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Material Name

Invar

Material Type

Metal

Process Compatibility

CNC machining

Property Value
Mechanical Properties
Ultimate tensile strength 450 – 480 MPa
Yield strength 260 – 280 MPa
Young’s modulus (modulus of elasticity) 137 – 148 GPa
Elongation at break 30 – 35 %
Hardness 90 – 98 HRC
Physical Properties
Corrosion resistance Poor to Medium
Magnetism Magnetic
Weldability Moderate to Good
Thermal Properties
Maximum service temperature 320 – 430 °C
Thermal expansion coefficient 0.5 – 2 × 10-6/ºC
Thermal conductivity 10 – 15 W/(m⋅°C)
Electrical Properties
Electrical resistivity 75 – 85 μΩ*cm
Post Treatments
Post-Processing Cold working, annealing and quenching
Anodizing compatibility Not suitable
Common Applications
Aircraft control Optical & laser systems
Electronic devices
Rapid Prototyping

Our Invar service capabilities

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