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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 Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020 With High Mechanical Properties For Electric Heating Applications wholesale

NiCr8020 With High Mechanical Properties For Electric Heating Applications

Name: Nichrome Resistance Wire Cr20Ni8080Ni20CrNiCr8020 With High Mechanical Properties For Electric Heating Applications
Brand: Senphus
Price: 1 USD

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Brand Name :Senphus

Model Number :Cr20Ni80/80Ni20Cr/NiCr8020

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.

Place of Orig :China

Name :Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020

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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Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020 with High Mechanical Properties for Electric Heating Applications

Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020 is a nickel-chromium-based alloy that contains 20% chromium and 80% nickel. This high-nickel content makes it highly resistant to oxidation and corrosion at high temperatures, making it an ideal material for resistive heating elements, industrial furnaces, and applications requiring stable electrical resistivity at elevated temperatures. Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020 is a high-performance nickel-chromium alloy designed for high-temperature applications where oxidation resistance, electrical resistivity, and thermal stability are critical. Its primary use is in heating elements, resistors, furnace components, and thermocouples. The alloy’s high nickel content gives it excellent resistance to oxidation and scaling at elevated temperatures, making it a durable choice for harsh industrial environments. Although it is more expensive than lower-nickel alloys, its performance in demanding applications justifies its use in industries that require reliability and durability over time.

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 Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020 include:

Composition:

Nickel (Ni): 80% (provides excellent resistance to oxidation, high-temperature stability, and electrical resistivity).

Chromium (Cr): 20% (enhances oxidation and corrosion resistance, particularly in high-temperature environments).

Iron (Fe): Small amounts (balance), adding to the alloy’s strength and workability.

Other Elements: Trace amounts of silicon, manganese, and carbon for improving fabrication and strength.

High-Temperature Resistance:

Oxidation Resistance: The 20% chromium content helps form a protective oxide layer at elevated temperatures, making the alloy highly resistant to oxidation in high-temperature environments, up to around 1100°C (2012°F).

Thermal Cycling Resistance: With its ability to withstand repeated heating and cooling cycles, it is ideal for use in applications that experience constant thermal fluctuations, such as electric furnaces or heating elements.

Electrical Resistivity:

High Electrical Resistivity: Due to its high nickel content, NiCr8020 offers high electrical resistivity, making it suitable for resistance heating applications where consistent resistance is necessary.

Stable Resistance: The alloy maintains stable electrical resistance even under varying temperature conditions, making it ideal for resistive heating and thermocouple applications.

Corrosion and Scaling Resistance:

Excellent Corrosion Resistance: The chromium content significantly improves the alloy’s ability to resist oxidizing atmospheres, as well as sulfidation and scaling in high-temperature environments.

Scaling Resistance: Forms a protective oxide layer that prevents scaling, which would otherwise reduce the material’s life in high-temperature furnaces or heaters.

Mechanical Properties:

Tensile Strength and Ductility: Offers good tensile strength at elevated temperatures, as well as sufficient ductility to allow for drawing into wire, strips, and coils.

Work Hardening: The material may work-harden during cold working, which is common in high-strength alloys, and may require post-fabrication heat treatment to restore its ductility.

Weldability and Fabrication:

Weldability: Can be welded using standard techniques like TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, though welding should be done carefully to avoid embrittlement or cracking in the heat-affected zone.

Formability: It is easily drawn into wires and coils, making it versatile for use in heating elements, resistors, and furnace components.

Applications:

Heating Elements: Widely used in electric heating elements, furnaces, ovens, and other industrial heating applications, where high temperatures and stable resistance are required.
Resistors: Ideal for manufacturing resistors in industrial heating systems, where high and stable resistance is essential.
Thermocouples: Suitable for temperature sensors and thermocouples that operate at high temperatures, where consistent electrical properties are required for accurate temperature measurement.
Furnace Components: Frequently used in industrial furnaces, kilns, and dryers for applications where high resistance to oxidation and temperature cycling is necessary.

Advantages of Nichrome Resistance Wire Cr20Ni80/80Ni20Cr/NiCr8020:

Excellent Oxidation Resistance: The high nickel content combined with chromium ensures strong resistance to oxidation in high-temperature environments.
High Electrical Resistivity: Offers stable electrical resistance, making it ideal for resistors and heating elements.
Thermal and Mechanical Durability: Can withstand high thermal stresses, making it ideal for thermal cycling applications like furnaces and heating systems.
Corrosion Resistance: Resists oxidation, scaling, and sulfidation in high-temperature environments, extending the alloy's lifespan in harsh conditions.
Versatile Fabrication: Can be drawn into wire, strip, and other forms, and can be welded into components for various applications.

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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