Invar® 36 Free-Machined Round Bar – Precision Low-Expansion Steel for High-Performance Applications
Invar® is a low expansion alloy consisting of 36% nickel, balance iron.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.05 g/cm³ |
Dimension
| Property | Value | Comment | |
|---|---|---|---|
Diameter | 4.8 - 152.4 mm | ||
Length | 3050 - 3660 mm | Mill random length | |
Dimensions | Available diameters: 4.8mm, 6.4mm, 7.9mm, 9.5mm, 12.7mm, 15.9mm, 19.1mm, 25.4mm, 31.8mm, 34.9mm, 38.1mm, 41.3mm, 44.5mm, 50.8mm, 57.2mm, 60.3mm, 63.5mm, 69.9mm, 76.2mm, 88.9mm, 101.6mm, 127.0mm, 152.4mm | ||
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 141 GPa | |
Elongation | 23.0 °C | 34 % | in 2 in. |
Hardness, Rockwell B | 23.0 °C | 80 [-] | |
Poisson's ratio | 23.0 °C | 0.29 [-] | |
Tensile strength | 23.0 °C | 518 MPa | |
Yield strength | 23.0 °C | 276 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.9E-6 1/K | from 20°C to the mentioned temperature |
150.0 °C | 2.4E-6 1/K | from 20°C to the mentioned temperature | |
200.0 °C | 3E-6 1/K | from 20°C to the mentioned temperature | |
250.0 °C | 4.4E-6 1/K | from 20°C to the mentioned temperature | |
300.0 °C | 6.1E-6 1/K | from 20°C to the mentioned temperature | |
350.0 °C | 7.5E-6 1/K | from 20°C to the mentioned temperature | |
400.0 °C | 8.7E-6 1/K | from 20°C to the mentioned temperature | |
450.0 °C | 8.9E-6 1/K | from 20°C to the mentioned temperature | |
500.0 °C | 1.05E-5 1/K | from 20°C to the mentioned temperature | |
600.0 °C | 1.18E-5 1/K | from 20°C to the mentioned temperature | |
Melting point | 1427 °C | ||
Specific heat capacity | 23.0 °C | 502 J/(kg·K) | |
Thermal conductivity | 23.0 °C | 10 W/(m·K) | |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 23.0 °C | 8.23E-7 Ω·m |
Magnetic
| Property | Value |
|---|---|
Curie temperature | 279 °C |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.05 % |
Chromium | 0.25 % |
Cobalt | 0.5 % |
Iron | Balance |
Nickel | 36 % |
Silicon | 0.4 % |
Sulfur | 0.015 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Positioning devices • Bimetal thermostats • Advanced composite molds for aerospace industry • Dimensionally stable instruments and optical devices • Containers for LNG tankers • Transfer lines for LNG • Echo boxes and filters for mobile telephones • Magnetic shielding • Small electrical transformers • Metrology devices • Scientific instruments • Electrical circuit breakers • Temperature regulators • Clock balance wheels • Pendulum clocks • Precision condenser blades • Radar and microwave cavity resonators • Special electronic housings • Seals, spacers, and specialized frames • High voltage transmission lines • CRT applications: shadow masks, deflection clips, and electron gun components. | |
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