Factory Supply Nichrome 80 Cr20ni80 Nichrome Spring Wire Chromel a Spark Resistance Wire for Heating Element

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Model NO.: Cr20Ni80
• Purity: 30%
• Alloy: Alloy
• Powder: Not Powder
• Product Name: Nickel Base Alloy Incoloy Wire
• Sample: Avaliable
• Material: 800 800h 800ht 825 925
• Certificate: ISO
• Delivery Time: 15-20 Days
• Transport Package: Wooden Box
• Specification: customized
• Trademark: victory
• Origin: China

Product Description

Product Description

Nichrome 80/20

Cr20Ni80, also known as Nichrome 80/20 or alloy 2.4869, is a premium nickel-chromium resistance wire consisting of 20-23% chromium with nickel as the balance element and iron content controlled below 1%. It is the most widely adopted heating alloy wire for high-temperature industrial and civilian thermal equipment, manufactured via precise cold drawing and hydrogen annealing to deliver bright, uniform surface and excellent ductility.

This alloy boasts core outstanding physical properties. Its room-temperature resistivity hits 1.09 μΩ·m, generating stable Joule heat efficiently with low power fluctuation. The protective chromium oxide film formed on its surface provides remarkable oxidation resistance, supporting a maximum continuous operating temperature up to 1200°C and a melting point of 1400°C. It features a low temperature coefficient of resistance, stable austenite microstructure during long-term thermal cycles, and superior creep resistance at high heat, avoiding deformation or brittle fracture after thousands of heating cycles. Besides, the wire shows great cold workability and weldability for easy winding and assembly of heating components.

Our factory supplies Cr20Ni80 wire in full diameter range from 0.018 mm to 8 mm on plastic spools or large coils, complying with GB/T 1234, ASTM and ISO standards, with RoHS certification available. It serves diverse industries: industrial electric furnaces, ceramic sintering kilns, laboratory heating plates, household hair dryers and ovens, as well as precision wound resistors. Compared with iron-chromium-aluminum wire, Cr20Ni80 achieves longer service life and consistent heating performance, making it the top pick for high-end heating element manufacturing worldwide.

Product Parameters

Grade		800	800H	800HT	825	925
Chemical Composition (%)	C	≤0.1	0.05-0.1	0.06-0.1	≤0.05	≤0.03
	Mn	≤1.5	≤1.5	≤1.5	≤1	≤1
	Fe	rest	rest	rest	rest	rest
	P	--	--	--	≤0.02	≤0.03
	S	≤0.015	≤0.015	≤0.015	≤0.03	≤0.03
	Si	≤1	≤1	≤1	≤0.5	≤0.5
	Cu	≤0.75	≤0.75	≤0.75	1.5-3	1.5-3
	Ni	30-35	30-35	30-35	38-46	42-46
	Al	0.15-0.6	0.15-0.6	0.15-0.6	0.2-1	0.15-0.5
	Ti	0.15-0.6	0.15-0.6	0.15-0.6	0.6-1.2	1.9-2.4
	Cr	19-23	19-23	19-23	19.5-23.5	19.5-23.5
	Mo	--	--	--	2.5-3.5	2.5-3.5

 

Product Process

1. Raw material preparation: Firstly, the raw materials for Incoloy alloy, including powders or chunks of alloying elements, need to be prepared. These materials usually consist of alloys of metals such as nickel, iron, chromium, etc.
2. Alloy Melting: The pre-weighed raw materials are placed into a furnace for high-temperature melting. Under controlled conditions of alloy composition and melting temperature, the various alloying elements are thoroughly mixed to form a homogeneous melt.
3. Continuous Casting or Forging: The molten Incoloy alloy is poured into continuous casting machines or forging equipment to form billets or long bars, preparing them for subsequent drawing processes.
4. Heat Treatment: The billets or bars of Incoloy alloy are subjected to heat treatment to relieve residual stresses and adjust the microstructure, improving the mechanical properties and corrosion resistance of the wire material.
5. Drawing: The heat-treated Incoloy billets or bars are drawn through a series of drawing machines to gradually reduce their diameter, forming wires of the desired diameter. Control of drawing speed and temperature ensures dimensional accuracy and surface quality of the wire.
6. Surface Treatment: Surface treatment of the drawn Incoloy wires includes processes such as acid pickling, polishing, etc., to improve surface finish and corrosion resistance.
7. Testing and Packaging: The final Incoloy wires undergo quality testing, including chemical composition analysis, dimensional inspection, surface quality checks, etc. They are then packaged for transportation and storage.

Application

1. Chemical Industry: Used in the manufacturing of chemical equipment and vessels such as reactors, heat exchangers, evaporators, etc., to maintain stability in corrosive and high-temperature environments.

2. Aerospace: Widely applied in high-temperature components of aerospace engines, gas turbines, etc., capable of withstanding extreme temperatures and corrosive environments.

3. Energy Sector: Utilized in the manufacturing of components for nuclear power plants, thermal power plants, as well as pipelines and equipment for petroleum and natural gas extraction.

4. Marine Engineering: Employed in the fabrication of equipment for seawater desalination, offshore platform structures, etc., exhibiting excellent performance in seawater corrosion and high-pressure environments.

5. Automotive Manufacturing: Used in high-temperature components of automotive exhaust systems, turbochargers, etc., enhancing durability and reliability.

6. Medical Instruments: Utilized in the manufacturing of high-temperature sterilization equipment, medical instrument components, ensuring stability under stringent sterilization conditions.

7. Electronics Industry: Applied in the manufacturing of electric furnace heating elements, electronic vacuum equipment, etc., providing reliable operation in high-temperature and corrosive atmospheres.

8. Chemical Processing: Used in chemical reactors, distillation columns, etc., offering reliable corrosion resistance.

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