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Jiangyin Chengxin Alloy Material Co., Ltd ，

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City:changzhou

Province/State:jiangsu

Country/Region:china

Contact Person:MrChangfeng Ye

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China Cr20Ni80/80Ni20Cr/NiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation wholesale

NiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation

Name: Cr20Ni8080Ni20CrNiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation
Brand: Senphus
Price: 1 USD

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Brand Name :Senphus

Certification :ISO9001

Place of Origin :China

MOQ :5kg

Payment Terms :T/T, D/P

Supply Ability :30 Tons per day

Delivery Time :3 days

Packaging Details :Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.

Model Number :Cr20Ni80/80Ni20Cr/NiCr8020

Place of Orig :China

Type :Ni-Cr-Fe alloys

Application :Heating element and resistor

Color :Shiny silver or dark gray

Density :8.40

Resistivity at 20 ℃ :1.09±0.05

Melting point（℃） :1400

Thermal conductivity KJ/mh ℃ :60.3

Elongation at rupture（% ) :>20

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Cr20Ni80/80Ni20Cr/NiCr8020 Nickel Chromium Wire Alloy Heating Element Anti Oxidation

Cr20Ni80 (also known as 80Ni20Cr or NiCr8020) is a nickel-chromium alloy consisting of approximately 20% chromium and 80% nickel. It is highly valued for its excellent resistance to oxidation and corrosion, especially at high temperatures. The high nickel content enhances its resistance to acidic and alkaline environments, while chromium provides a protective oxide layer that improves its durability and oxidation resistance.

This alloy is known for maintaining its strength and stability in extreme temperatures, typically up to 1,100°C (2,012°F), making it ideal for high-heat applications. It also offers good mechanical properties, such as strength, ductility, and resistance to wear and fatigue.

Cr20Ni80 is commonly used in applications such as heating elements, electric furnace components, resistors, and industrial equipment that require resistance to thermal stress, oxidation, and corrosion. It is a reliable material for use in industries like electric heating, chemical processing, and high-temperature applications.

Chemical Composition Wt.% Cr20Ni80	%	Ni	Fe	C	Si	Mn	P	S	Cr	Al
	Min				0.75				20
	Max	Rest	1	0.08	1.6	0.6	0.02	0.015	23	0.5

Trade Code

GB	JIS	ASTM	DIN EN/DIN	GOST
Cr20Ni80	NCHW-1 NCHR-1	80Ni20Cr	NiCr8020	Х20Н80-Н

Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys

Type Performance		Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni80	Cr20Ni30	Cr25Ni20
Main Chemical composition	Ni	Rest	55.0-61.0	34.0-37.0	Rest	30.0-34.0	19.0-22.0
	Cr	28.0-31.0	15.0-18.0	18.0-21.0	20.0-23.0	18.0-21.0	24.0-26.0
	Fe	≤ 1.0	Rest	Rest	≤ 1.0	Rest	Rest
Max. continuous service temp. of element (℃)		1250	1150	1100	1200	1100	1050
Resistivity at 20 ℃(μΩm)		1.18±0.05	1.12±0.05	1.04±0.05	1.09±0.05	1.06±0.05	0.95±0.05
Density(g/cm3)		8.10	8.20	7.90	8.40	7.90	7.15
Thermal condyctivity (KJ/m·h·℃)		45.2	45.2	43.8	60.3	43.8	43.8
Coefficient of lines expansion (α×10-6/℃)		17.0	17.0	19.0	18.0	19.0	19.0
Melting point (approx.)(℃)		1380	1390	1390	1400	1390	1400
Elonation at rupture(%)		＞20	＞20	＞20	＞20	＞20	＞20
Micrographic structure		Austenite	Austenite	Austenite	Austenite	Austenite	Austenite
Magnetic properties		Non-magnetic	Low-magnetic	Low-magnetic	Non-magnetic	Low-magnetic	Non-magnetic
Note:The various grades of electric resistance alloy material are blended with the amountof rare earth, titanium and other trace elements, to improve the processing performance andextend the period of the uselife.

Some key features of Cr20Ni80 include:

High Electrical Resistivity:

Cr20Ni80 has a high electrical resistivity of approximately 1.09 μΩ·m at 20°C, which is beneficial for applications requiring high resistance values in a small volume.

Temperature Coefficient of Resistance (TCR):

The alloy exhibits a low TCR of less than 200 ppm/°C over the range of 20°C to 1000°C, indicating minimal resistance change with temperature variations.

Corrosion and Oxidation Resistance:

Cr20Ni80 demonstrates excellent resistance to corrosion and oxidation, especially in oxidizing environments, with a formation of a protective chromium oxide layer at high temperatures.

Mechanical Strength:

The alloy possesses good mechanical strength with a tensile strength of at least 650 MPa and an elongation rate of 20% at room temperature.

Thermal Properties:

Cr20Ni80 has a thermal conductivity of 15 W/(m·K) at 20°C and a coefficient of thermal expansion of 18 x 10⁻⁶/°C, contributing to its stability and performance in high-temperature applications.

High-Temperature Performance:

It can be used continuously up to 1200°C in air, making it suitable for high-temperature heating elements and other components that require long-term stability at elevated temperatures.

Processing and Formability:

Cr20Ni80 can be processed through various methods including cold rolling, hot rolling, and drawing, offering flexibility in manufacturing heating elements and other components.

These characteristics make Cr20Ni80 an ideal material for high-temperature electrical heating applications where resistance stability, corrosion resistance, and mechanical strength are critical.

Applications:

Heating Elements: Cr20Ni80 is extensively used in heating elements for both domestic and industrial appliances due to its high resistance to oxidation and corrosion, especially under conditions of frequent switching or wide temperature fluctuations.
Industrial Furnaces: The alloy is utilized in industrial electric furnaces, enameling furnaces, and other high-temperature applications where its ability to withstand temperatures up to 1200°C (2190°F) is crucial.
Electrical Resistance Elements: Known for its high electrical resistance and low temperature coefficient of resistance, Cr20Ni80 is ideal for resistors in high-temperature environments.
Metal Sheathed Tubular Elements: Cr20Ni80 is used in the production of metal sheathed tubular heating elements, which are essential for various industrial heating processes.
Cartridge Elements: The alloy is also used in cartridge elements, providing reliable performance in high-temperature heating applications.
High-Quality Heat-Resistant Steel Structures: Components such as high-temperature mesh belts and burning frames benefit from the alloy's strength and resistance to high temperatures.
Heating Wires: Cr20Ni80 is used in the manufacturing of heating wires for electric heating pipes and high-grade household electric heaters.

These applications leverage the superior properties of Cr20Ni80, including high electrical resistivity, excellent high-temperature strength, and good corrosion resistance, making it suitable for high-temperature and demanding environments.

Technical data of wires

Dia. (mm)	Cross-sectional area (mm²)	Weight/Meter (g/m)	Resistance/Meter at 20 ℃ (Ω/m)	Dia. (mm)	Cross-sectional area (mm²)	Weight/Meter (g/m)	Resistance/Meter at 20 ℃ (Ω/m)
0.018	0.000255	0.002117	3410-4610	0.25	0.04909	0.4074	20.88-23.54
0.020	0.000314	0.002606	2940-3740	0.28	0.06158	0.5111	16.64-18.76
0.022	0.000380	0.003154	2440-3100	0.30	0.07069	0.5867	14.49-16.35
0.025	0.000491	0.004075	1880-2400	0.32	0.07548	0.6265	12.74-14.36
0.028	0.000616	0.005113	1530-1870	0.33	0.08553	0.7099	12.20-13.40
0.030	0.000707	0.005868	1338-1696	0.38	0.1134	0.9412	9.13-10.09
0.032	0.000804	0.006673	1180-1440	0.40	0.1257	1.0433	8.24-9.108
0.035	0.000962	0.007985	981-1200	0.41	0.132	1.0956	7.68-8.89
0.040	0.001257	0.01043	780.7-954.1	0.45	0.159	1.3197	6.51-7.196
0.045	0.00159	0.0132	594-726	0.50	0.1963	1.6293	5.273-5.829
0.050	0.001963	0.01629	499.6-610.6	0.55	0.2376	1.9721	4.518-4.994
0.055	0.00238	0.01975	407-477	0.60	0.2827	2.3464	3.797-4.197
0.063	0.00312	0.02590	321.41-377.31	0.65	0.3318	2.7539	3.235-3.575
0.070	0.00385	0.03196	260.5-305.9	0.70	0.3848	3.1938	2.789-3.083
0.080	0.005027	0.04172	199.5-234.1	0.75	0.4418	3.6669	2.43-2.686
0.090	0.006362	0.0528	157.6-185.0	0.80	0.5027	4.1724	2.136-2.36
0.100	0.007854	0.0652	127.7-149.9	0.85	0.5674	4.7094	1.891-2.091
0.110	0.009852	0.08177	105.5-123.9	0.90	0.6362	5.2805	1.687-1.865
0.120	0.01227	0.1018	88.67-104.1	0.95	0.7088	5.883	1.46-1.62
0.140	0.01539	0.1277	65.85-75.77	1.00	0.7854	6.5188	1.367-1.511
0.150	0.01767	0.1467	56.75-66.63	1.10	0.9503	7.8875	1.13-1.26
0.160	0.02011	0.01669	50.42-58.00	1.12	0.9852	8.1772	1.05-1.17
0.170	0.022700	0.1884	44.18-51.86	1.18	1.0936	9.0769	0.95-1.05
0.180	0.02545	0.2112	40.26-45.40	1.20	1.313	10.8979	0.79-0.87
0.190	0.02835	0.2353	35.37-41.53	1.30	1.327	11.0141	0.78-0.86
0.200	0.03142	0.2608	32.62-36.78	1.40	1.539	12.7737	0.70-0.77
0.212	0.035300	0.2930	28.41-33.35	1.50	1.767	14.6661	0.60-0.67
0.220	0.03801	0.3155	26.65-30.39	1.60	2.011	16.8924	0.52-0.58

The tolerance or wires diameter

Wires	Dia.(mm)	Tolerance
	0.018-0.025	±0.001
	0.028-0.035	±0.0015
	0.040-0.055	±0.002
	0.070	±0.0025
	0.08-0.10	±0.003
	0.11-0.14	±0.004
	0.16-0.20	±0.005
	0.22-0.25	±0.006
	0.28-0.30	±0.007
	0.32-0.40	±0.01
	0.41-0.50	±0.015
	0.55-0.80	+0.02/-0.03
	0.85-1.00	+0.02/-0.03
	1.10-1.50	±0.03
Note:special specification can be produced as per client's request.

Technical data of ribbon

Thickness × Width(mm)	Resistance/meter(20 ℃) (Ω/m)	Surface area/ohm (20℃) (cm²/Ω)	Weight/meter (g/m)	Surface area/meter (cm²/m)
0.09x2.5	5.27	9.84	1.72	51.8
0.08x0.2	74	0.0756	0.122	5.6
0.08x0.3	49.4	0.154	0.183	7.6
0.08x0.4	37	0.259	0.244	9.6
0.08x0.5	29.6	0.392	0.305	11.6
0.08x0.6	24.7	0.551	0.367	13.6
0.08x0.7	21.2	0.737	0.428	15.6
0.08x0.8	18.5	0.951	0.489	17.6
0.08x0.9	16.5	1.19	0.55	19.6
0.08x1.0	14.8	1.46	0.611	21.6
0.08x1.2	12.3	2.07	0.733	25.6
0.08x1.5	9.87	3.2	0.916	31.6
0.08x1.8	8.23	4.57	1.1	37.6
0.08x2.0	7.4	5.62	1.22	41.6
0.07x0.2	84.6	0.0638	0.107	5.4
0.07x0.3	56.4	0.131	0.16	7.4
0.07x0.4	42.3	0.222	0.214	9.4
0.07x0.5	33.9	0.337	0.267	11.4
0.07x0.6	28.2	0.475	0.321	13.4
0.07x0.7	24.2	0.637	0.374	15.4
0.07x0.8	21.2	0.822	0.428	17.4
0.07x0.9	18.8	1.03	0.481	19.4
0.07x1.0	16.9	1.26	0.535	21.4
0.07x1.2	14.1	1.8	0.641	25.4
0.07x1.5	11.3	2.78	0.802	31.4
0.06x0.2	98.7	0.0527	0.0916	5.2
0.06x0.3	65.8	0.109	0.137	7.2
0.06x0.4	49.4	0.186	0.183	9.2
0.06x0.5	39.5	0.284	0.229	11.2
0.06x0.6	32.9	0.401	0.275	13.2
0.06x0.7	28.2	0.539	0.321	15.2
0.06x0.8	24.7	0.697	0.367	17.5
0.06x0.9	21.9	0.875	0.412	19.2
0.06x1.0	19.7	1.07	0.458	21.2
0.06x1.2	16.5	1.53	0.55	25.2
0.05x0.2	118	0.0422	0.0764	5.00
0.05x0.3	79	0.0886	0.115	7.00
0.05x0.4	59.2	0.152	0.153	9.00
0.05x0.5	47.4	0.232	0.191	11.00
0.05x0.6	39.5	0.329	0.229	13.00
0.05x0.7	33.9	0.443	0.267	15.0
0.05x0.8	29.6	0.574	0.305	17.0
0.05x0.9	16.3	0.722	0.344	19.0
0.05x1.0	23.7	0.886	0.382	21.0
Ribbon is rolled by the wire, the actual cross-sectional area of the ribbon is smaller 8％ than calculated by the rectangular.

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