Nickel Based Alloy Invar 36 Strip 1420°C Melting Point With Higher Strength And Ductility

Nickel Based Alloy Invar 36 Strip 1420°C Melting Point With Higher Strength And Ductility

Product Introduction

Invar 36 strip is an iron-nickel alloy strip with an ultra-low expansion coefficient. Its main components include about 36% nickel and the balance iron, as well as small amounts of chromium, manganese, silicon and other elements. This alloy has an extremely low thermal expansion coefficient of about 1.2×10^-6/℃ in the temperature range of -250℃ to +200℃, which makes it almost unchanged in size when the temperature changes. Invar 36 strip has good plasticity and toughness, as well as high strength and ductility. The thermal expansion coefficient can be further reduced by cold deformation and stabilized by heat treatment within a specific temperature range. Its density is 8.1 g/cm³, the melting temperature range is 1430℃, and the Curie temperature is 230℃. Invar 36 strip is widely used in fields requiring high dimensional stability, such as precision instruments, aerospace, electronics and communication equipment. Typical applications include the production, storage and transportation of liquefied gas, measuring and control instruments with working temperatures below +200°C, spiral connector bushings between metals and other materials, bimetallic and temperature-controlled bimetallic, membrane frames, shadow masks, tempering molds for CRP parts in the aviation industry, and satellite and missile electronic control unit frames below -200°C.

Parameter

Specific Applications

1. Precision instruments and equipment:It is widely used in the manufacture of precision instruments and equipment, such as optical instruments, astronomical telescopes, measuring instruments, precision balances, etc. Its low expansion performance can ensure that these devices maintain high precision under temperature changes.
2. Aerospace industry:It is used to manufacture high-precision measuring instruments and temperature control devices, especially inside spacecraft and satellites, to ensure the dimensional stability of internal components, thereby ensuring the accuracy and reliability of the equipment.
3. Electronics and communications industry:It is used to manufacture components that require minimal expansion when the temperature changes, such as wires and cables in semiconductor manufacturing and communication equipment, to ensure the stability of the circuit and the reliability of signal transmission.
4. Medical devices:It is used in medical devices that require high precision and stability, such as precision instruments and sensors.
5. Optical and laser systems:It is used to manufacture optical lens brackets, sensor frames, etc., to ensure that the structure of the instrument will not deform at different temperatures, thereby ensuring the accuracy of the measurement and the long-term stability of the equipment.

Advantages and Characteristics

• Excellent mechanical properties:It has high strength and good ductility, and can work in various environments and stresses. Its single-phase austenite structure enables it to maintain high strength while also having excellent toughness.
• Good processing performance:It can be formed by a variety of methods, such as cold working, hot working and welding, and its processing performance is similar to that of austenitic stainless steel. This makes Invar 36 easy to achieve complex design requirements.
• Good corrosion resistance:It is corrosion-resistant in dry room temperature environments. In humid environments, the surface of the material will rust, but its oxidation resistance and acid and alkali corrosion resistance are particularly outstanding.

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Q&A

What are the main application areas of Invar 36?

Invar 36 is widely used in precision instruments, aerospace, medical devices, chemical industry, and other fields, such as the production, storage, and transportation of liquefied gas, temperature control devices, spiral connector bushings between metals and other materials, bimetallic and temperature-controlled bimetallic materials, diaphragm frames, shadow masks, tempering molds for CRP components in the aerospace industry, and frames for electronic control units in satellites and missiles.

What is the corrosion resistance of Invar 36?

Invar 36 has good corrosion resistance in dry room temperature environments, but it may rust in humid environments.

What are the surface treatment methods for Invar 36?

Surface treatment methods for Invar 36 include mechanical polishing, electrochemical polishing, electroless nickel plating, vacuum coating, heat treatment, and oxidation treatment.

What is the fatigue performance of Invar 36?

Under a stress of 300 MPa, the fatigue life of Invar 36 can reach approximately 10^6 cycles. At high temperatures (above 400°C), the fatigue life decreases by about 20%-30%. Surface treatment techniques such as coating can significantly enhance its fatigue resistance.

What are the supply forms of Invar 36?

Invar 36 is typically supplied in forms such as sheets, plates, wires, bars, and tubes to meet the needs of different application scenarios.