Corrosion Resistant NiCr Alloy Cr20Ni80 Heat Wire For Long Term And Stable Heating Performance

Cr20Ni80 alloy wire is a nickel-chromium alloy wire, which is composed of 20% chromium and 80% nickel. This alloy wire has excellent oxidation resistance and corrosion resistance, and is suitable for electric furnace heating, heating wire, resistance welding and other applications in high temperature environments.

Corrosion resistance:

Cr20Ni80 alloy wire has good corrosion resistance under normal circumstances and can resist corrosion by various acids and alkali. However, in some special corrosive media, Cr20Ni80 alloy wire may need to be used with caution. The following are some special corrosive media that may require attention:

Oxidizing acids: Strong oxidizing acids such as concentrated nitric acid, concentrated sulfuric acid and concentrated hydrofluoric acid are highly corrosive to Cr20Ni80 alloy wire. These acidic media can cause passive film damage on the alloy surface, thereby accelerating the corrosion process.

Hydrochloric acid: At high concentration and high temperature, hydrochloric acid can corrode Cr20Ni80 alloy wire. Particularly in the presence of chloride ions, corrosion rates may increase.

Ammonia: Ammonia solution with higher concentration can corrode Cr20Ni80 alloy wire. Ammonia gas in ammonia water can form ammonia alloy compounds, leading to corrosion of the alloy surface.

Fluoride: Solutions containing fluoride may corrode Cr20Ni80 alloy wire under certain conditions. In particular, strong fluorides such as hydrogen fluoride and ammonium fluoride are highly corrosive to alloys.

 

Technical Parameters:

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Performance material		Cr10Ni90	Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
Composición	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
Temperatura máxima℃		1300	1200	1250	1150	1100	1100
Punto de fusion ℃		1400	1400	1380	1390	1390	1390
Densidad g/cm3		8.7	8.4	8.1	8.2	7.9	7.9
Resistividad μΩ·m,20℃		0.76±0.05	1.09±0.05	1.18±0.05	1.12±0.05	1.00±0.05	1.04±0.05
Alargamiento a la ruptura		≥20	≥20	≥20	≥20	≥20	≥20
Calor especifico J/g.℃		－	0.44	0.461	0.494	0.5	0.5
Conductividad térmica KJ/m.h℃		－	60.3	45.2	45.2	43.8	43.8
Coeficiente de expansión de líneas a×10-6/(20～1000℃)		－	18	17	17	19	19
Estructura micrográfica		－	Austenite	Austenite	Austenite	Austenite	Austenite
Propiedades magnéticas		－	Nonmagnetic	Nonmagnetic	Nonmagnetic	Weak magnetic	Weak magnetic

 

Form	Specification
Wire	Diameter=0.025mm~8mm
Flat wire	Width=0.40~6.0mm	Thick=0.03~0.50mm
Strip	width=8~250mm	Thick=0.05~3.0mm
Bar	Diameter=8~100mm	Long=50~1000

 

Service:

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We provide comprehensive nickel-chromium alloy technical support and services to ensure the normal operation of our customers' products. Our experienced technical team will provide customers with various services such as installation, maintenance, troubleshooting, and answer any questions they may have about the product. We also provide customized solutions, designing and manufacturing nickel-chromium alloy products according to customer needs.

 

 

contact us

email:victory@dlx-alloy.com

Oem service:
Welcome customized size
We are experience factory for OEM&ODM service

Size dimension range:

Wire: 0.01-10mm

Ribbons: 0.05*0.2-2.0*6.0mm

Strip: 0.05*5.0-5.0*250mm

NiCr series: Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30

Shipping:

The shipping method for NiCr Alloy depends on the customer's requirements.

Two options are mentioned: airmail and sea freight.

Airmail is a faster but relatively more expensive shipping option, suitable for customers who require quick delivery.