Nickel Strip Heating Resistance Alloy Strip Cr20ni80 Cr10ni90 Nichrome Foil Sheet

• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Purity: 78%
• Alloy: Alloy
• Type: Nickel Bar
• Powder: Not Powder
• Model NO.: Cr20Ni80 strip
• Product Name: Cr20ni80 Strip
• Size: 8.0mm-500mm
• Certificate: ISO 9001
• Density: 8.4 g/cm3
• Melting: 1400
• Maximum Temperature: 1200
• Elongation at Repture: 20
• Transport Package: Carton or Wooden Box
• Specification: customized
• Trademark: Victory
• Origin: China
• HS Code: 7506200000
• Production Capacity: 50000 Kilograms/Year

Product Description

Product Description

Cr20Ni80 Strip
 

• The Cr20Ni80 strip, also known as Nichrome 80/20 strip, is a versatile product commonly used in various heating applications due to its excellent electrical resistivity, high-temperature stability, and corrosion resistance. Here's a detailed product description:

  Composition:

• Nickel (Ni): Approximately 80%
• Chromium (Cr): Approximately 20%

Key Features:

1. High Electrical Resistivity: The Cr20Ni80 strip exhibits high electrical resistivity, making it suitable for generating heat efficiently when subjected to an electric current.
2. High Temperature Stability: It maintains its mechanical properties and performance even at elevated temperatures, making it ideal for use in applications requiring sustained heat generation.
3. Corrosion Resistance: The chromium content imparts excellent corrosion resistance, ensuring long-term reliability and durability in harsh environments.
4. Uniform Heating: The strip's consistent composition and uniform structure ensure uniform heating across its surface, essential for achieving precise temperature control in heating applications.
5. Versatile Application: It finds application in various industries and products, including heating elements for industrial furnaces, household appliances, automotive systems, and laboratory equipment.
6.  

7. Product Specifications:

8. Thickness: Typically ranges from fractions of a millimeter to a few millimeters, depending on the application requirements.
9. Width: Available in various widths to suit different manufacturing processes and heating element designs.
10. Surface Finish: Can be supplied with a variety of surface finishes, including bright annealed, matte, or polished, depending on the application's aesthetic and functional requirements.
11. Coil or Sheet Form: Offered in coils or sheets for easy handling and processing in manufacturing operations.

12. Production Process:

13. The production process for Cr20Ni80 strip involves melting and mixing the raw materials (nickel and chromium), casting the alloy into ingots, hot rolling or cold rolling the ingots into the desired thickness, annealing to relieve internal stresses and improve ductility, and final surface treatment and quality control checks.

 

 

 
 

Product Parameters

Performance\ material		Cr10Ni90	Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
Composition	Ni	90	Rest	Rest	55.0-61.0	34.0-37.0	30.0-34.0
	Cr	10	20.0-23.0	28.0-31.0	15.0-18.0	18.0-21.0	18.0-21.0
	Fe		≤1.0	≤1.0	Rest	Rest	Rest
Maximum temperatureºC		1300	1200	1250	1150	1100	1100
Meltiing point ºC		1400	1400	1380	1390	1390	1390
Density g/cm3		8.7	8.4	8.1	8.2	7.9	7.9
Resistivity(μΩ·m,20ºC)			1.09±0.05	1.18±0.05	1.12±0.05	1.00±0.05	1.04±0.05
Elongation at rupture		≥20	≥20	≥20	≥20	≥20	≥20
Specific heat (J/g.ºC)			0.44	0.461	0.494	0.5	0.5
Thermal conductivity(KJ/m.hºC)			60.3	45.2	45.2	43.8	43.8
Coefficient of lines expansion			18	17	17	19	19
a×10-6/ºC (20~1000ºC)
Micrographic structure			Austenite	Austenite	Austenite	Austenite	Austenite
Magnetic properties			Non	Non	Non	Weak	Weak
			magnetic	magnetic	magnetic	magnetic	magnetic

 

 

1.  

2. Applications:

3. Heating Elements: Used in electric heating elements for industrial furnaces, ovens, kilns, heat sealers, and heat-treating equipment.
4. Household Appliances: Employed in heating elements for toasters, hair dryers, electric stoves, and water heaters.
5. Automotive Industry: Utilized in applications such as seat heaters, defrost systems, and engine pre-heaters.
6. Laboratory Equipment: Found in laboratory ovens, incubators, and analytical instruments requiring controlled heating.

7. Quality Assurance:

8. The Cr20Ni80 strip undergoes rigorous quality control measures throughout the manufacturing process to ensure adherence to specifications for composition, dimensions, surface finish, and mechanical properties.

9. Overall, the Cr20Ni80 strip offers excellent performance, reliability, and versatility in heating applications, making it a preferred choice for manufacturers across various industries.
    

Detailed Photos

 

1. 

2. Raw Material Selection: The primary raw materials for Cr20Ni80 nickel strip production are nickel and chromium. These materials must meet specific purity and quality standards to ensure the final product's desired properties.
    

3. Melting and Alloying: The nickel and chromium are melted together in precise proportions in an electric arc furnace or vacuum induction furnace. The melting process is carefully controlled to achieve a homogeneous alloy with the desired composition (80% nickel and 20% chromium for Cr20Ni80).
    

4. Casting: Once the alloy is molten and properly mixed, it is cast into ingots or slabs. This initial casting helps to solidify the alloy and prepare it for further processing.
    

5. Hot Rolling: The cast ingots are heated to high temperatures and passed through a series of rolling mills to reduce their thickness to the required dimensions. Hot rolling helps to refine the grain structure of the alloy and improve its mechanical properties.
    

6. Cold Rolling: After hot rolling, the strip undergoes cold rolling to further reduce its thickness to the desired final dimensions. Cold rolling also imparts additional strength and hardness to the strip.
    

7. Annealing: Cold-rolled nickel strip is often annealed in a controlled atmosphere furnace to relieve internal stresses and restore ductility. Annealing also helps to refine the microstructure of the alloy, improving its electrical and mechanical properties.
    

8. Surface Treatment: The annealed strip may undergo surface treatments such as pickling, passivation, or electroplating to remove any surface contaminants and improve corrosion resistance or surface finish, depending on the intended application.
    

9. Cutting and Slitting: The strip is then cut to the desired length and width using shearing or laser cutting methods. It may also be slit into narrower strips if required by the customer's specifications.
    

10. Quality Control: Throughout the production process, rigorous quality control measures are implemented to ensure that the Cr20Ni80 nickel strip meets the required specifications for composition, dimensions, surface finish, and mechanical properties. This includes regular testing of samples from the production batch for chemical composition, tensile strength, electrical resistivity, and other relevant properties.
     

11. Packaging and Shipping: Once the strip has passed quality control inspections, it is packaged according to customer requirements and prepared for shipping to end-users or distributors.

Company Profile

 

FAQ

 

 
 
What is your working time?
Monday-Saturday : 7:30AM-17:00PM (Beijing time, GMT+08.00)
We have public holiday during May.1-3, Oct.1-7 and Chinese New Year holiday . For detail,please see our update holiday notice.
During these period, if you have a demand, Please send me an email.

Do you provide free samples?
Yes, we can provide a free sample for testing,buyer should bear all the shipping costs.

What is your payment terms?
T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal

What is the lead time?
Usually sample lead time is 7 days after payment has been confirmed.
Normal order is 10-30days,it depends on customers' quantity.