Lork ASTM B388 Bimetallic Alloy 5j20110 Bimetal Strip for Electric Vacuum Devices 5j20 Precision Alloy Strip

Product Description

Product Description

 

5J20 Bimetallic Alloy Introduction

LORK is a alloy manufacturer with 20 years of manufacturing experience.
 

The 5J20 series of thermobimetallic materials (usually referring to grades like 5J20110) are highly sensitive thermobimetallic materials that belong to the thermobimetallic category (5J) of precision alloys. This type of composite material is made of two or more layers of metals or alloys with different expansion coefficients firmly bonded together. When the temperature changes, due to the different thermal expansion coefficients of the component layers, they will bend or rotate, thereby converting thermal energy into mechanical energy.

5J20 Bimetallic Alloy Application

Due to its high sensitivity, 5J20110 is commonly used in the manufacture of various temperature-sensitive components, with wide applications in:

Electro-vacuum devices: For example, non-magnetic, non-matching ceramic seals in gyroscopes.

Automatic control equipment: Thermal sensors in various temperature measurement, control, and compensation devices.

Electrical protection: Thermal sensors in electrical protection devices such as thermal relays, circuit breakers, and motor overload protectors (especially where high sensitivity or low-current direct heating is required).

5J20 Bimetallic Alloy Composition

High expansion layer:Mn75Ni15Cu10
Low expansion layer:Ni36

5J20 Alloy Typical Physical properties

Density (g/cm3):7.7
Electrical resistivity at 20ºC(mm2/m):1.13+/-5%
Thermal conductivity, λ/ W/(m*ºC):6
Elastic Modulus, E/ Gpa:113-142
Bending K / 10^-6 ºC^-1(20~135ºC):20.8
Temperature bending rate F/(20~130ºC)10^-6ºC:39.0%±5%
Allowable temperature (ºC):-70~ 200
Linear temperature (ºC):-20~ 150

5J20 Bimetallic Alloy Selection and Usage Considerations

Confirm Requirements: Select the most appropriate grade based on the application's operating temperature range, sensitivity requirements (specific bending), resistance requirements, load type (direct or indirect heating), and corrosion resistance requirements.

Pay Attention to Consistency: Batch-to-batch consistency in the properties of thermo-bimetallic materials (such as thermal expansion coefficient and resistivity) is crucial. Select a reliable supplier and review their quality documentation.

Processing and Handling: The material is typically supplied in strip form. During processing, attention must be paid to the bond strength to prevent delamination. Stress-relieving heat treatment (e.g., holding at 260-280°C for 1-2 hours) may sometimes be required.

Substitution and Upgrade: In some applications, you may encounter grades with similar performance but slightly different designations (e.g., 5J20110 may be referred to as 5J11 in some materials), or new material grades may become available. Close communication with Lork Group is recommended.

 

Packaging & Shipping

Company Profile

FAQ

Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .

Q2: Can I have free sample before making orders?

A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.

Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .

Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .

Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .