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NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

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Brand Name :	Senphus
Model Number :	Cr20Ni30
Certification :	ISO9001
Price :
Payment Terms :	T/T, D/P
Supply Ability :	30 Tons per day
Delivery Time :	3 days

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NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

Cr20Ni30 is a high-temperature resistant alloy, known for its excellent mechanical properties and resistance to oxidation and corrosion. Composed of approximately 20% chromium and 30% nickel, this alloy offers a balance of strength, ductility, and thermal stability. It is widely used in applications that demand high-temperature endurance and resistance to corrosive environments, such as in the chemical, aerospace, and power generation industries. The alloy's high chromium content provides excellent oxidation resistance, while the nickel content ensures good ductility and strength at elevated temperatures. Cr20Ni30 is also valued for its ability to maintain structural integrity under thermal cycling, making it suitable for components in heat exchangers, furnace parts, and other equipment subjected to frequent temperature changes. Its combination of properties positions Cr20Ni30 as a versatile material for high-performance applications where both temperature resistance and corrosion resistance are critical.

Chemical Composition Wt.%

Cr20Ni30

Min

Max

Bal.

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.

Mechanical properties	Condition	Tensile Strength (UTS)(Rm)	Elongation(A5)
	D>3, T>0.2	≥600 MPa	≥25%
	0.1<D<0.3, T>0.2	≥600 MPa	≥20%

Some key features of Cr20Ni30 include:

1. High-Temperature Resistance:

Cr20Ni30 excels in high-temperature environments, offering strong resistance to oxidation and thermal scaling, making it suitable for use in furnaces, gas turbines, and heat exchangers.

2. Corrosion Resistance:

The alloy provides excellent resistance to corrosion in both acidic and alkaline environments, making it ideal for chemical reactors, marine applications, and industrial incinerators.

3. Austenitic Structure:

Cr20Ni30 has an austenitic (face-centered cubic) microstructure, which ensures excellent mechanical properties like toughness, strength, and good formability. It is also non-magnetic.

4. Weldability:

The alloy offers good weldability, allowing it to be easily fabricated into complex components for various industrial applications.

5. Stress Corrosion Cracking Resistance:

Cr20Ni30 has strong resistance to stress corrosion cracking, especially in chloride and other corrosive environments.

6. Thermal Cycling Resistance:

The alloy performs well under thermal cycling, maintaining its mechanical properties during temperature fluctuations.

Applications:

1. Heat Exchangers

Used in both industrial and power plant heat exchangers due to its ability to resist oxidation and corrosion at high temperatures.

2. Gas Turbines

Ideal for turbine components exposed to high heat, such as blades, nozzles, and combustion chambers, where high strength and resistance to thermal cycling are required.

3. Furnace Parts

Cr20Ni30 is commonly used in furnace components, such as burners and structural parts, due to its resistance to oxidation and its ability to withstand high temperatures.

4. Chemical Reactors

Used in the construction of reactors in chemical processing industries where resistance to both high temperatures and corrosive substances is critical.

5. Boiler Components

In power plants, Cr20Ni30 is used in boiler components that require resistance to high temperatures and mechanical stresses.

6. Marine Applications

Due to its excellent resistance to corrosion, particularly in chloride environments, Cr20Ni30 is used in marine applications such as ship components, offshore oil rigs, and underwater pipelines.

7. Industrial Incinerators

Suitable for use in waste incinerators and other high-temperature industrial processes that involve corrosive gases or residues.

8. Aerospace Components

Cr20Ni30 is used in aerospace applications such as engine parts, exhaust systems, and other high-performance components exposed to extreme heat and mechanical stresses.

9. Heat Resistant Coatings

Cr20Ni30 is sometimes used in coatings for high-temperature applications to provide resistance to oxidation and wear.

10. Piping Systems

Used for high-temperature and high-pressure piping in industries like petrochemical, where both corrosion resistance and mechanical strength are required.

In summary, Cr20Ni30 is utilized in industries like aerospace, power generation, chemical processing, marine, and waste management, where its high-temperature stability, corrosion resistance, and mechanical properties ensure long-term reliability in demanding conditions.

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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NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications

1. High-Temperature Resistance:

2. Corrosion Resistance:

3. Austenitic Structure:

4. Weldability:

5. Stress Corrosion Cracking Resistance:

6. Thermal Cycling Resistance:

1. Heat Exchangers

2. Gas Turbines

3. Furnace Parts

4. Chemical Reactors

5. Boiler Components

6. Marine Applications

7. Industrial Incinerators

8. Aerospace Components

9. Heat Resistant Coatings

10. Piping Systems

Cr20Ni30 NiCr Alloy

High Performance Electrical Applications NiCr Alloy

NiCr Alloy Cr20Ni30 Nickel-Chromium-Iron Alloys for High-Performance Electrical Applications