Jiangyin Chengxin Alloy Material Co., Ltd ，

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NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And

China NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And

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NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And

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	Cr30Ni70/NiCr7030/ХН70Ю
Type	Ni-Cr-Fe alloys
Application	Heating element and resistor
Color	Shiny silver or dark gray
Density	8.10
Resistivity at 20 ℃	1.18±0.05
Melting point（℃）	1380
Thermal conductivity(KJ/mh ℃ )	45.2
Elongation at rupture（% )	>20
Brand Name	Senphus
Model Number	Cr30Ni70/NiCr7030/ХН70Ю
Certification	ISO9001
Place of Origin	China

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Product Details
Company Details

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	Cr30Ni70/NiCr7030/ХН70Ю
Type	Ni-Cr-Fe alloys	Application	Heating element and resistor
Color	Shiny silver or dark gray	Density	8.10
Resistivity at 20 ℃	1.18±0.05	Melting point（℃）	1380
Thermal conductivity(KJ/mh ℃ )	45.2	Elongation at rupture（% )	>20
Brand Name	Senphus	Model Number	Cr30Ni70/NiCr7030/ХН70Ю
Certification	ISO9001	Place of Origin	China
High Light	High Temperature NiCr Alloy ，Resistance Applications NiCr Alloy ，Industrial Heating Elements NiCr Alloy

NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю for Industrial Heating Elements and Resistance Applications in High-Temperature Environments

NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю) is a high-performance nickel-chromium alloy primarily composed of 30% chromium and 70% nickel. This alloy offers excellent high-temperature strength, corrosion resistance, and thermal stability, making it widely used in industrial heating elements, electrical resistance applications, and high-temperature environments. NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю) is a high-performance nickel-chromium alloy that offers exceptional oxidation and corrosion resistance, high-temperature stability, and mechanical strength. It is commonly used in heating elements, electrical resistors, thermocouples, and other high-temperature applications across industries such as aerospace, chemical processing, and power generation. Its ability to maintain performance in extreme conditions, combined with its excellent formability and weldability, makes it an ideal material for critical industrial applications.

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.

Chemical Composition Wt.% Cr30Ni60	%	Ni	Fe	C	Si	Mn	P	S	Cr	Al
	Min				0.75				28
	Max	Rest	0.08	0.08	1.6	0.6	0.02	0.015	31	0.5

Key Features of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

Composition:

Nickle (Ni): Approximately 70% — provides excellent resistance to corrosion, oxidation, and high-temperature stability.

Chromium (Cr): Approximately 30% — enhances oxidation resistance and contributes to the alloy's high-temperature strength.

Other Elements: May contain trace amounts of manganese, iron, and silicon to improve mechanical properties and processability.

Corrosion and Oxidation Resistance:

Oxidation Resistance: The high chromium content enables the alloy to form a protective oxide layer, providing exceptional resistance to oxidation, even at temperatures up to 1200°C (2192°F).

Corrosion Resistance: Resistant to acids, alkalis, and saltwater, making it suitable for use in chemically aggressive environments.

Resistant to Scaling: Can withstand high-temperature exposure to air, reducing the risk of scaling or material degradation.

High-Temperature Performance:

Temperature Stability: Retains mechanical strength and integrity even at high temperatures, up to 1100-1200°C (2012-2192°F).

Thermal Expansion: Exhibits a low coefficient of thermal expansion, which makes it stable under temperature variations.

Mechanical Properties:

High Tensile Strength: Provides excellent mechanical strength at elevated temperatures.

Ductility: Exhibits good ductility and formability, making it suitable for bending, twisting, or other fabrication techniques.

Fatigue Resistance: Withstands thermal cycling and mechanical stress without compromising integrity.

Weldability and Fabrication:

Ease of Fabrication: Easily fabricated into wires, strips, or other forms for industrial applications.

Weldable: Can be welded using standard techniques like GTAW and GMAW.

Formability: Can be drawn into fine wires for use in heating elements or resistance applications.

Applications:

Heating Elements: Commonly used in electric resistance heating elements, such as those found in ovens, furnaces, and industrial heaters.
Electrical Resistors: Suitable for the manufacture of high-temperature resistors, such as in industrial furnaces, kiln components, and in electrical appliances.
Thermocouples: Employed as a thermocouple wire for temperature sensing in extreme environments.
Aerospace and Power Generation: Used in turbine components, heat exchangers, and other high-temperature systems.
Chemical Industry: Ideal for applications where high resistance to corrosive environments and high temperatures is required.

Advantages of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

High Temperature Resistance: Retains strength and stability even at extreme temperatures, making it ideal for heating elements and high-heat industrial applications.
Corrosion and Oxidation Resistance: Performs well in corrosive environments, offering long service life in chemical processing industries.
Excellent Mechanical Properties: Offers high tensile strength, ductility, and fatigue resistance.
Weldable and Formable: Easy to work with and fabricate into various forms for different industrial uses.
Versatile Application Range: Suitable for use in a wide range of high-temperature and corrosive applications, including heating systems, resistive elements, and electrical components.

Limitations of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

Cost: The high nickel content increases the cost of the alloy compared to other metals and alloys with lower nickel content.
Work Hardening: The alloy may work harden during cold forming processes, requiring specialized techniques for fabrication.
Mechanical Stress: While it has good strength at high temperatures, it may not be suitable for applications that involve extreme mechanical stress or heavy loads.

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.

Company Details

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Year Established:

2003 
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Total Annual:

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Employee Number:

1400~1500 
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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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