Precision Alloy Invar36 /4j36 Invar Alloy Steel Sheet Wear Resistance

• Customization: Available
• Type: Sheet
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: Invar36 /4j36
• Composition: Precision Alloy
• Technique: Cold Rolled
• Shape: Sheet
• 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 0.5~100mm range
• Trademark: Titanium-nickel alloy
• Origin: Shandong Province, China
• HS Code: 7226920000
• Production Capacity: 20000ton/Month

Product Description

 

Product Description

Here's a basic table with some of the key properties of Invar 36 (4J36):

Property	Value
Composition	36% Nickel, Balance Iron
Density	8.0 g/cm³
Melting Point	1,375°C (2,507°F)
Thermal Expansion Coefficient	1.2 x 10 /°C
Modulus of Elasticity	160 GPa
Tensile Strength	585 MPa
Yield Strength	275 MPa
Poisson's Ratio	0.29
Electrical Resistivity	1.5 µΩ·cm

 

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.

 

 

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FAQ

Invar Alloy FAQ

1. What is Invar alloy?

Invar is a trademarked name for a family of iron-nickel alloys known for their unique property of very low coefficient of thermal expansion. Invar alloys typically contain around 36% nickel, and are often referred to as Invar 36 (4J36) or simply as 36% nickel steel. This makes it ideal for precision instruments where dimensional stability is critical.

2. Why is Invar alloy important?

Invar's primary advantage is its ability to resist dimensional changes under temperature fluctuations. This property is essential in applications such as precision machinery, scientific instruments, clocks, and high-precision aerospace and industrial equipment.

3. What are the key properties of Invar?

• Low Coefficient of Thermal Expansion: Around 1.2 x 10 /°C.
• High Density: 8.0 g/cm³.
• Good Mechanical Strength: Tensile strength of 585 MPa.
• Excellent Dimensional Stability: Maintains shape and size over a wide temperature range.
• Corrosion Resistance: Fairly resistant to corrosion but may require additional treatment in harsh environments.

4. What are typical applications for Invar alloys?

Invar is used in:

• Precision instruments (e.g., thermometers, barometers).
• Clocks and watches (to ensure accurate timekeeping).
• Aerospace components.
• Scientific equipment (e.g., interferometers and laser systems).
• Geophysical measurements.
• Cryogenic applications.

5. What is the thermal expansion coefficient of Invar?

Invar 36 has a very low thermal expansion coefficient of about 1.2 x 10 /°C, which is nearly zero compared to other metals, making it especially suitable for environments with significant temperature changes.

6. How is Invar alloy processed?

Invar can be forged, rolled, and heat-treated. It is commonly welded and machined to precise tolerances. However, due to its high nickel content, special attention needs to be given to its machining and handling to avoid distortion.

7. Is Invar corrosion-resistant?

Invar has moderate corrosion resistance but it is not immune to all forms of corrosion. It performs well in neutral or mild conditions but might require protective coatings or alloys for use in highly corrosive environments, like seawater.

8. What are the challenges of working with Invar?

• Brittleness: Invar can be somewhat brittle, especially when compared to other steel alloys, so it needs to be handled carefully during machining and forming.
• Cost: The high nickel content makes Invar alloys relatively expensive.
• Welding Issues: Special welding techniques and expertise are required, as Invar's thermal expansion properties can cause difficulties during the welding process.

9. Can Invar be used at high temperatures?

While Invar performs well at low to moderate temperatures, its strength and dimensional stability start to degrade at temperatures above 500°C (932°F). It is not suitable for extreme high-temperature environments.

10. Is Invar alloy magnetic?

Yes, Invar has magnetic properties, but they are not as strong as those of pure iron. The alloy is considered ferromagnetic, but its magnetic properties are reduced compared to other ferrous materials.
If you have more specific questions about Invar alloys or need details on other aspects, feel free to ask!