The 3J01 Invar Kovar Precision Alloy Bar  is a premium material designed to meet the demanding needs of high-tech industries. This nickel-iron alloy, renowned for its low coefficient of thermal expansion (CTE), offers exceptional dimensional stability across a wide temperature range. Its unique combination of strength, toughness, and resistance to mechanical stress makes it a versatile material for precision applications in electronics, aerospace, and optical industries.

Ideal for components requiring stable thermal and magnetic properties, the 3J01 alloy is often used in glass-to-metal seals, vacuum tubes, sensors, and optical system components where maintaining element alignment under varying temperatures is critical. Its outstanding qualities make it a preferred choice for high-precision applications.

Key Features of 3J01 Invar Kovar Precision Alloy Bar

• Low Coefficient of Thermal Expansion: Ensures exceptional dimensional stability, maintaining accurate measurements even under temperature fluctuations.

• High Strength and Toughness: Offers good mechanical properties, capable of withstanding mechanical stresses in various high-performance environments.

• Magnetic Properties: Ideal for applications requiring magnetic stability and low coercivity, such as in aerospace and electronics.

• Versatility: Suited for a range of industries, including electronics, aerospace, optics, and more.

• Customizable Sizes: Available in various bar and rod shapes, sizes, and lengths to meet your specific needs.

Applications of 3J01 Invar Kovar Precision Alloy Bar

The 3J01 Invar Kovar Precision Alloy Bar is widely used in industries that require high precision and stable thermal and magnetic properties. Some key applications include:

• Electronics Industry: Used for glass-to-metal seals in vacuum tubes, sensors, and other electronic devices where thermal expansion must be tightly controlled.

• Aerospace Industry: Essential in precision instruments and components that require stable alignment and consistent properties across temperature variations.

• Optical Industry: Utilized in optical systems where maintaining alignment of elements under different temperature conditions is critical.

• Medical and Industrial Equipment: Applied in equipment where dimensional stability and thermal resistance are necessary for reliable performance.

Comparison Parameters Table

Parameter

3J01 Precipitation-Hardened Strip

Standard Spring Steel

Stainless Steel (e.g., SUS301)

Yield Strength (MPa)

Up to 2,900

1,500–2,000

1,000–1,800

Elastic Modulus (GPa)

~190

~200

~193

Corrosion Resistance

Good, resists harsh environments

Moderate, needs coatings

Excellent, chromium-based

Temperature Range (°C)

-40 to +80

-20 to +150

-50 to +300

Fatigue Resistance

Outstanding, millions of cycles

Good, but lower than 3J01

Good, varies by alloy

Hysteresis

Very low, minimal energy loss

Moderate

Moderate to high

Applications

Springs, actuators, elastic components

General springs

Springs, electronics

Cost-Effectiveness

High, due to durability

Moderate, lower initial cost

Higher, material-driven

Packaging & Shipping

Packaging: Each 3J01 Invar Kovar Precision Alloy Bar is carefully packaged to prevent damage during transport. We offer secure and sturdy packaging options, including custom solutions for bulk orders.

Shipping: We collaborate with reputable shipping companies to deliver your order safely and promptly. Shipping costs will be calculated based on your order's weight and destination. once your order is shipped, we will provide a tracking number for real-time updates.

 

• about US
• about DLX ALLOY

• CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, Precision Alloy , FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

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• about Our factory

• Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.

• For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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• Client Visits

• Building Stronger Partnerships

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• We support all kinds of testing:

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FAQ

Q: What is your working time and contact information?
A: Our working hours are Monday to Saturday from 7:30 AM to 5:00 PM (Beijing Time, GMT+08:00). We observe public holidays in China from May 1-3, Oct 1-7, and Chinese New Year. For inquiries during holidays, please email us.

Q: Do you provide free samples?
A: Yes, we can provide free samples for testing purposes. However, the buyer is responsible for the shipping costs.

Q: What is your payment terms?
A: We accept T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal as payment methods.

Q: What is the lead time?
A: Sample orders usually ship within 7 days after payment /confirm/iation. For larger orders, the lead time will depend on the quantity and specifications.