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NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

China NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

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NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

MOQ： 5kg
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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	Cr20Ni35
Type	Ni-Cr-Fe alloys
Application	Heating element and resistor
Color	Shiny silver or dark gray
Density	7.90
Resistivity at 20 ℃	1.04±0.05
Melting point（℃）	1390
Thermal conductivity	43.8(KJ/m h ℃ )
Elongation at rupture（% )	>20
Brand Name	Senphus
Model Number	Cr20Ni35
Certification	ISO9001
Place of Origin	China

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Product Details
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Product Specification


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	Cr20Ni35
Type	Ni-Cr-Fe alloys	Application	Heating element and resistor
Color	Shiny silver or dark gray	Density	7.90
Resistivity at 20 ℃	1.04±0.05	Melting point（℃）	1390
Thermal conductivity	43.8(KJ/m h ℃ )	Elongation at rupture（% )	>20
Brand Name	Senphus	Model Number	Cr20Ni35
Certification	ISO9001	Place of Origin	China
High Light	Industrial Furnaces NiCr Alloy Wire ，Stable Electrical Resistivity NiCr Alloy Wire ，Cr20Ni35 NiCr Alloy Wire

NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

NiCr Alloy Wire Cr20Ni35 is a nickel-chromium-based alloy with 30% chromium and 35% nickel, designed primarily for high-temperature resistance, oxidation resistance, and resistive applications. This composition offers an ideal balance of thermal stability, mechanical properties, and electrical resistivity, making it well-suited for a variety of industrial applications where these properties are critical. NiCr Alloy Wire Cr20Ni35 is an excellent choice for high-temperature and electrical resistive applications. Its oxidation resistance, thermal stability, and electrical resistivity make it suitable for demanding environments like heating elements, resistors, and industrial furnaces. While more costly than standard materials, its performance in high-temperature and corrosive conditions justifies its use in critical applications requiring durability and reliability over time. Its versatility in fabrication and welding further enhances its appeal in a wide range of industries.

Chemical Composition Wt.%

Cr20Ni35

Min

Max

Rest

0.08

0.02

0.015

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.

Key Features of NiCr Alloy Wire Cr30Ni35:

Composition:

Nickel (Ni): 35% (provides excellent high-temperature stability, corrosion resistance, and electrical resistivity).

Chromium (Cr): 20% (improves oxidation resistance and strength at elevated temperatures).

Iron (Fe): Small amounts (balance), contributing to structural integrity.

Other Elements: Small quantities of manganese, silicon, and carbon for improving fabrication, strength, and weldability.

High-Temperature Resistance:

Oxidation Resistance: Performs well at temperatures up to 1000°C (1832°F), with chromium forming a protective oxide layer to resist oxidation and prevent further degradation.

Thermal Fatigue Resistance: Can endure repeated heating and cooling cycles without significant loss of strength, making it ideal for industrial heating applications.

Electrical Resistivity:

Moderate Electrical Resistivity: Offers stable electrical resistance over a wide temperature range, making it suitable for resistors, heating elements, and other electrical components where controlled heating or consistent electrical properties are necessary.

Ideal for use in applications such as furnaces or electrical resistive heating elements, where precise and stable electrical characteristics are crucial.

Corrosion and Scaling Resistance:

Good Resistance to Corrosion: Particularly effective in oxidizing environments, and performs well in applications where the material is exposed to high temperatures and corrosive gases or vapors.

Sulfidation and Scaling Resistance: Resists scaling and corrosion in environments with high sulfur content or other aggressive atmospheres.

Mechanical Properties:

Tensile Strength and Ductility: Provides good tensile strength and can withstand mechanical stresses at high temperatures while maintaining adequate ductility for fabrication.

Work Hardening: The alloy may harden when cold-worked, but it remains sufficiently ductile for most forming applications, such as drawing into wire or other shapes.

Weldability and Fabrication:

Weldability: Can be welded using standard methods, including GTAW (TIG) and GMAW (MIG), with appropriate precautions to avoid cracking and ensure a strong bond.

Formability: Easily drawn into wires, strips, or other shapes, making it versatile for manufacturing heating elements and other specialized components.

Applications:

Heating Elements: Commonly used in industrial heating elements, resistors, and furnaces, where high temperatures and stable electrical properties are essential.
Electrical Components: Suitable for resistors and thermocouples that require reliable performance in high-heat applications.
High-Temperature Furnaces: Often used in high-temperature industrial applications like furnaces, ovens, and dryers that require resistance to oxidation and thermal cycling.

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.

Advantages of NiCr Alloy Wire Cr20Ni35:

High-Temperature Stability: Ideal for high-temperature applications like heating elements and industrial furnaces, with stable mechanical properties even in extreme heat.
Excellent Oxidation Resistance: Provides strong protection against oxidation and scaling, ensuring a long service life in demanding environments.
Reliable Electrical Properties: Maintains consistent electrical resistance, making it perfect for use in resistors, heating coils, and temperature sensors.
Weldability and Formability: Can be processed and fabricated into various shapes, such as wire or strip, for a wide range of applications.
Durable in Harsh Environments: Suitable for environments where corrosive gases, scaling, or sulfur exposure could degrade other materials.

Limitations of NiCr Alloy Wire Cr30Ni35:

Cost: Higher cost compared to standard alloys due to the nickel and chromium content.
Limited Resistance to Highly Acidic Environments: While resistant to oxidation and scaling, it may not perform well in highly acidic or chloride-rich environments compared to more specialized alloys.
Work Hardening: As with other high-strength alloys, it can work-harden during cold working, which may require more care during processing.

Company Details

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Total Annual:

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Employee Number:

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Company Overview: Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and pre... Company Overview: Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and pre...

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Jiangyin Chengxin Alloy Material Co., Ltd ，
Building 3, No. 29, Beitanghe East Road, Qinglong Street, Tianning District, Changzhou City, Jiangsu Province
https://www.heatingalloywire.com/

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