Precision Alloy Invar36/4j36 Nickel Alloy Invar Alloy Steel Strip/Coil/Foil Supplier

• Customization: Available
• Type: Coil
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: invar36/4j36
• Composition: Precision Alloy
• Technique: Cold Rolled
• Shape: Coil
• Surface Treatment: Polished
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Aerospace, Chemical Industry,
• MOQ: 50kg
• Trade Terms: EXW, Fob, CIF, CFR
• Stock: Stock Available
• Delivery Time: 10-20day
• Transport Package: Marine Packaging of Metal
• Specification: Ultra-thin 0.005~0.3mm range
• Trademark: Titanium-nickel alloy
• Origin: Shandong Province, China
• HS Code: 7226920000
• Production Capacity: 20000ton/Month

Product Description

 

Product Description

 

Property	Details
Alloy Name	Invar 36 (4J36)
Chemical Composition	~36% Nickel, ~64% Iron
Density	8.1 g/cm³
Coefficient of Thermal Expansion (CTE)	~1.2 × 10 /°C (20-100°C)
Melting Point	~1430°C
Magnetic Properties	Ferromagnetic
Corrosion Resistance	Moderate
Applications	Precision instruments, clocks, aerospace components, optical devices
Features	Excellent dimensional stability across temperature ranges

 

Detailed Photos

 

 

Company Profile

 Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry.

 

 

Factory workshop

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FAQ

 

1. What is Invar 36 (4J36)?

Invar 36, also known as 4J36, is a nickel-iron alloy containing approximately 36% nickel. It is renowned for its extremely low coefficient of thermal expansion, making it highly stable across temperature variations.

 

2. What are the key properties of Invar 36?

• Low Thermal Expansion: Minimal dimensional changes with temperature.
• High Strength: Retains strength even at cryogenic temperatures.
• Corrosion Resistance: Moderate resistance to corrosion.
• Magnetic Properties: Ferromagnetic below its Curie point (~230°C).

 

3. What are the typical applications of Invar 36?

• Precision Instruments: Clocks, seismic measurement devices, and optical instruments.
• Aerospace: Components requiring dimensional stability under temperature variations.
• Cryogenics: Applications operating at extremely low temperatures.
• Electronics: Shadow masks in cathode ray tubes and other precise components.

 

4. Why is Invar 36 called "Invar"?

The name "Invar" comes from "invariable," referencing its negligible thermal expansion and stable dimensions across temperature changes.

 

5. How does Invar 36 perform under extreme temperatures?

• At Low Temperatures: Maintains excellent dimensional stability and high strength, making it ideal for cryogenic applications.
• At High Temperatures: Loses its unique properties as it approaches its Curie point (~230°C), beyond which it behaves like ordinary metals.

 

6. What are the mechanical properties of Invar 36?

• Density: ~8.1 g/cm³
• Tensile Strength: 490 MPa (typical)
• Hardness: ~160 HB
• Elastic Modulus: ~140 GPa

 

7. Is Invar 36 corrosion-resistant?

Invar 36 has moderate corrosion resistance. For better corrosion protection, it may require surface treatments or coatings, especially in humid or aggressive environments.

 

8. What are the challenges in working with Invar 36?

• Machinability: Can be difficult to machine due to its toughness.
• Welding: Requires specialized techniques to maintain its unique properties.
• Cost: Higher cost compared to standard steel due to its nickel content.

 

9. Can Invar 36 be heat-treated?

Yes, heat treatments can be used to relieve stress and optimize mechanical properties. However, excessive heat may affect its low thermal expansion characteristics.

 

10. How does Invar 36 compare to similar alloys?

Invar 36 is unmatched in terms of its low thermal expansion. Alloys like Super Invar (with cobalt) or Kovar are alternatives for specific applications but have different expansion rates and temperature ranges.