Super Invar® 32‑5: Ultra‑Low Thermal Expansion Alloy for Precision Engineering
Super Invar 32-5 is a low expansion alloy consisting of 32% nickel, 5% cobalt, and balance iron. Super Invar Alloy exhibits minimum thermal expansion at room temperatures (one half of Invar Alloy), as well as thermal expansion properties less than that of Invar Alloy in the 67/203°F (-55/95°C) temperature range.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.15 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 145 GPa | |
Elongation | 23.0 °C | 40 % | in 2 in. |
Hardness, Rockwell B | 23.0 °C | 75 [-] | |
Tensile strength | 23.0 °C | 483 MPa | |
Yield strength | 23.0 °C | 276 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 8.4E-7 1/K | from 20°C to the mentioned temperature |
150.0 °C | 1.17E-6 1/K | from 20°C to the mentioned temperature | |
200.0 °C | 1.72E-6 1/K | from 20°C to the mentioned temperature | |
250.0 °C | 2.53E-6 1/K | from 20°C to the mentioned temperature | |
300.0 °C | 4.16E-6 1/K | from 20°C to the mentioned temperature | |
350.0 °C | 5.74E-6 1/K | from 20°C to the mentioned temperature | |
400.0 °C | 7.03E-6 1/K | from 20°C to the mentioned temperature | |
500.0 °C | 8.99E-6 1/K | from 20°C to the mentioned temperature | |
550.0 °C | 1.06E-5 1/K | from 20°C to the mentioned temperature | |
700.0 °C | 1.16E-5 1/K | from 20°C to the mentioned temperature | |
800.0 °C | 1.22E-5 1/K | from 20°C to the mentioned temperature | |
900.0 °C | 1.3E-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 | 8.2E-7 Ω·m |
Magnetic
| Property | Value |
|---|---|
Curie temperature | 245 °C |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.05 % |
Chromium | 0.25 % |
Cobalt | 5 % |
Iron | Balance |
Nickel | 32 % |
Silicon | 0.25 % |
Sulfur | 0.015 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Common applications of Super Invar 32-5 are: Optical instruments . Telescopes . Laser instruments and equipment . Ring laser gyroscopes . Laser benches . Positioning devices . Metrology devices . Structural components . Substrates in instrument systems requiring precision measurements | |
Metal
- High‑Performance Tungsten Alloys: Applications and Benefits
- Diamond's Exceptional Role in Modern Medicine: From Surgical Instruments to Nanomedicine
- Super Glue: Chemistry, Manufacturing, and Quality Control
- Mastering Java's super Keyword: Advanced Usage & Practical Examples
- Jokari Super 4 Plus Automatic Wire Stripper 20050 – Precision, Durability, and User‑Approved Performance
- Master 3D Printing Ironing: Achieve Ultra‑Smooth Top Surfaces Every Time
- Alloy 36 (Invar®): Precision Low‑Expansion Nickel‑Iron Alloy
- UNS S32760 (Super Duplex 1.4501) – Premium Corrosion‑Resistant Alloy for Sour Service
- Invar® 36 Free-Machined Round Bar – Precision Low-Expansion Steel for High-Performance Applications
- Elevate Your Game: 3D-Printed Shoes for the Super Bowl