Electric Resistance Wire Nickel Coated Copper Wire Pure Nickel Wire 0.025mm Cr20ni30 Cr20ni80 Nickel-Wire-0.025-mm

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Model NO.: Cr20Ni30 Wire
• Alloy: Alloy
• Type: Nickel Wire
• Powder: Not Powder
• Product Name: Cr20ni30 Wire
• Size: 0.025mm-7.5mm
• Certificate: RoHS, ISO 9001
• Usage: Heating Resistance
• Transport Package: Standard Cartoon Box
• Specification: customized
• Trademark: Victory
• Origin: China
• HS Code: 7505220000
• Production Capacity: 50000 Kilograms/Year

Product Description

 

 Nickel chromium alloy wire

NiCr (Nickel-Chromium) alloys are a class of alloys primarily composed of nickel, chromium, and often other elements like iron. These alloys are renowned for their excellent resistance to corrosion, high-temperature strength, and oxidation resistance. They find extensive applications in various industries, including electrical heating elements, resistance wires, thermocouples, and in some cases, even in gas turbine engines.

Nichrome wire, short for Nickel-Chromium wire, is a type of resistance wire composed primarily of nickel and chromium. It's widely used in various applications where electrical resistance heating is required. Here's a detailed descriptio.

1. Composition:

   • Nichrome wire typically consists of approximately 80% nickel and 20% chromium. However, there are variations with slightly different compositions to suit specific requirements.
   • Other elements may also be present in smaller quantities to enhance certain properties, such as iron, silicon, manganese, and sometimes traces of other metals.
   •  

Model Number	Cr20Ni30
Type	Bare
Surface	Bright
Condition	Soft Annealed
Size	0.05-7.5mm
Melting point	1390ºC
Certificate	ISO ,ROHS
Application	Industrial Heating Equipments

Nichrome wire

 

Alloy Nomenclature Performance		Ni80Cr20	Ni70Cr30	Ni60Cr15	Ni35Cr20	Ni30Cr20
Main Chemical composition	Ni	Rest	Rest	55.0-61.0	34.0-37.0	30.0-34.0
	Cr	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
Max. continuous service temp. of element(ºC)		1200	1250	1150	1100	1100
Resistivity at 20ºC (μΩ·m)		1.09	1.18	1.12	1.0	1.04
Density(g/cm3)		8.40	8.10	8.20	7.90	7.90
Thermal conductivity (KJ/m·h·ºC)		60.3	45.2	45.2	43.8	43.8
Coefficient of lines expansion(α×10-6/ºC)		18.0	17.0	17.0	19.0	19.0
Melting point approx.( ºC)		1400	1380	1390	1390	1390
Elongation at rupture(%)		>20	>20	>20	>20	>20
Micrographic structure		austenite	austenite	austenite	austenite	austenite
Magnetic properties		nonmagnetic	nonmagnetic	Weak magnetic	Weak magnetic	Weak magnet

 

Nichrome alloy includes pure nickel, NiCr alloy, Fe-Cr-Al alloy and copper nickel alloy.
Nickel chrome alloys: Ni80Cr20, Ni70Cr30, Ni60Cr15, Ni35Cr20, Ni90Cr10,Ni30Cr20, pure nickel Ni200 and Ni201
FeCrAl alloy: 0Cr25Al5, 0Cr23Al5, 0Cr21Al4, 0Cr27Al7Mo2, 0Cr21Al6Nb, 0Cr21Al6.
Copper nickel alloy: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi23, CuNi30, CuNi44, Constantan,CuMn12Ni
Our Nichrome alloy are in the form of wire, coil, ribbon, strip, foil
Nichrome wire sizes are:
Wire: 0.018mm-10mm
Ribbon: 0.05*0.2mm-2.0*6.0mm
Strip: 0.5*5.0mm-5.0*250mm
Bar: 10-100mm
Nichrome 80 20
Nichrome Grade: Ni70Cr30,Ni80Cr20, Ni60Cr15, Ni35Cr20, Ni30Cr20
NiCr 80/20 also called Chromel A, Cr20Ni80, N8, Nichrome V, HAI - NiCr 80, Tophet A, Resistohm 80, Cronix 80, Protoloy, Alloy A,
MWS-650, Stablohm 650, NCHW1
 

 

The application areas of nickel-chromium alloy wires include: Petrochemical industry: used to manufacture pipes, valves, pumps and other components in petrochemical equipment, as well as catalyst carriers for petrochemicals. 

Aerospace industry: used to manufacture high-temperature components such as engines, turbine blades, and combustion chambers. 

Chemical industry: used to manufacture reaction kettles, heat exchangers and other components in chemical equipment. 

Devices: used to manufacture devices such as artificial joints and dental implants. Other fields: such as nuclear industry, electronics industry, etc.
 

Heating Elements: Nichrome wire is commonly used in electric heating elements for applications such as industrial furnaces, household appliances (e.g., toasters, hair dryers), and heating coils.
 

Resistance Wire: It's used as resistance wire in electrical circuits, including resistors and rheostats.
 

Thermocouples: Nichrome alloys are sometimes used in the construction of thermocouples, which are temperature sensors widely used in industrial and scientific applications.
 

Cutting Wire: In some applications, nichrome wire is used as a cutting wire, especially in applications where precision cutting at high temperatures is required, such as in foam cutting machines and thermal wire strippers.

 

 

Raw material preparation: Prepare high-purity nickel and chromium metals as the main raw materials for the alloy. These raw materials are typically available in bulk, powder or wire form and must meet strict chemical composition and purity requirements.

Alloy ingredients: Nickel and chromium are mixed together according to the formula in predetermined proportions. Ensuring a homogeneous mix is key to ensuring consistent performance of the final alloy.

Smelting: Put the mixed raw materials into a high-temperature smelting furnace, usually using methods such as arc melting, induction melting or gas protection melting. During the smelting process, the raw materials are melted by heating and maintained at the required component ratios and temperatures for the alloy to ensure uniform mixing.

Casting or forging: The smelted alloy can be formed into a blank or preliminary shape by casting or forging. Casting is the pouring of molten alloy into a mold to form the desired shape. Forging, on the other hand, changes the shape of the alloy by heating it to the appropriate temperature and then applying pressure or impact.

Heat treatment: After the alloy is initially formed, heat treatment is usually required to adjust its grain structure and mechanical properties. This may include steps such as solution treatment and aging treatments to improve the stability and strength of the alloy.

Wire Drawing: Heat-treated alloy blanks may be drawn into wire. Wire drawing is the process of stretching an alloy blank through a die to the required diameter and length to make resistance wire.

Final processing and testing: The drawn alloy wire may need to undergo further processing and testing, including surface treatment, fine processing, dimensional measurement and performance testing to ensure compliance with customer requirements and relevant standards.

The entire production process requires strict control of process parameters and quality standards to ensure the final production of Cr20Ni80 alloy products with stable performance and reliable quality.

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.