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6J8/6J8P/6J8X Precision Resistance Wire Accurate And Performance In Scientific Industrial And High-Tech Fields

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6J8X Precision Resistance Wire Accurate And Performance In Scientific Industrial And High-Tech Fields

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Brand Name :	Senphus
Model Number :	6J8/6J8P/6J8X
Certification :	ISO9001
Payment Terms :	T/T, D/P
Supply Ability :	30 Tons per day
Delivery Time :	3 days

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6J8/6J8P/6J8X Precision Resistance Wire Accurate And Performance In Scientific Industrial And High-Tech Fields

6J8/6J8P/6J8X Precision Resistance Wire Accurate and Performance in Scientific Industrial and High-Tech Fields

The 6J8 alloy is generally a manganin-type alloy, primarily made of Copper (Cu), Nickel (Ni), and Manganese (Mn). This composition gives the wire a very low temperature coefficient of resistance (TCR), meaning its resistance remains stable across a wide temperature range.

6J8/6J8P/6J8X Precision Resistance Wire is a high-performance material, especially designed for applications where stability, accuracy, and reliability are paramount. With its low temperature coefficient, high durability, and excellent resistance to oxidation, this wire is widely used in precision resistors, current sensing devices, temperature-compensated circuits, and other high-precision electronic applications. Its variants (P and X) offer further enhancements to suit specific industrial or scientific requirements.

6J8: This is the base alloy, offering stable electrical properties suitable for most precision applications.

6J8P: The "P" variant may denote a specific processing or treatment to enhance the wire’s properties, such as improved surface finish or resistance to oxidation.

6J8X: The "X" may indicate further refinement or a special feature, such as enhanced thermal stability or extra flexibility for specific applications.

Chemical Composition Wt.%

6J8 F1 Manganin

Min

Max

Rest

Chemical composition

Name	Type	Main chemical composition %
Name	Type	Cu	Mn	Ni	Si
Manganin	6J12	Rest	11~13	2~3	/
F1 Manganin	6J8	Rest	8~10	/	1~2
F2 Manganin	6J13	Rest	11~13	2~5	/

Volume resistivity for wires, sheet and ribbons

Name	Type	Volume resistivity (μΩ·m)
Manganin	6J12	0.47±0.03
F1 Manganin	6J8	0.35±0.05
F2 Manganin	6J13	0.44±0.04

Average resistance-temperature coefficient of Constantan

Name		Application temperature	Test temperature	Resistance-temperature coefficient		Average resistance-temperature coefficient
				α×10^-6 ℃^-1	β×10^-6 ℃^-1	α×10-6 ℃-1
Manganin wire, sheet	Level 1	5~45	10, 20, 40	-3~+5	-0.7~0	/
	Level 2			-5~+10
	Level 3			-10~+5
F1 Manganin wire, sheet		10~80	10, 20, 40	-5~+10	-0.25~0	/
F2 Manganin wire, sheet		10~80		0~+40	-0.7~1	/

Elongation rate

Dia.(mm)	Elongation rate (Lo=200mm), %
0.05	6
＞0.05~0.10	8
＞0.10~0.50	12
＞0.50	15

Thermal EMF rate for copper

Name	Type	Temperature	Average thermal EMF rate for copper
Manganin	6J12	0~100	1
F1 Manganin	6J8	0~100	2
F2 Manganin	6J13	0~100	3
Note: Thermal EMF rate for copper is absolute value

The net weight per spool

Dia(mm)	Net weight (g)	Dia(mm)	Net weight (g)
0.02~0.025	5	>0.28~0.45	300
>0.025~0.03	10	>0.45~0.63	400
>0.03~0.04	15	>0.63~0.75	700
>0.04~0.06	30	>0.75~1.18	1200
>0.06~0.08	60	>1.18~2.50	2000
>0.08~0.15	80	>2.50~3.00	3000
>0.15~0.28	150

Manganin(6J12) 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)
0.020	0.000314	0.00265	1346-1646	0.224	0.03941	0.3326	11.2-12.6
0.022	0.000318	0.00321	1113-1360	0.250	0.04909	0.414	9.00-10.15
0.025	0.000491	0.00414	862-1053	0.280	0.06158	0.5197	7.17-8.09
0.028	0.000616	0.0052	687-840	0.315	0.07793	0.6577	5.73-6.33
0.032	0.000804	0.00679	583-631	0.355	0.9898	0.8354	4.51-4.99
0.036	0.001018	0.00859	452-499	0.400	0.1257	1.061	3.55-3.93
0.040	0.001257	0.01061	344-404	0.450	0.159	1.342	2.81-3.10
0.045	0.001509	0.01342	272-319	0.500	0.1963	1.657	2.27-2.51
0.050	0.001963	0.01657	220-259	0.560	0.2463	2.08	1.83-1.98
0.056	0.002463	0.02079	176-206	0.630	0.3117	2.63	1.45-1.57
0.063	0.003117	0.02631	139-163	0.710	0.3959	3.34	1.14-1.23
0.071	0.003959	0.03341	109-128	0.750	0.4418	3.73	1.02-1.11
0.080	0.005027	0.04243	86.0-101.0	0.800	0.5027	4.24	0.898-0.972
0.090	0.006362	0.0537	68.0-79.80	0.850	0.5674	4.79	0.795-0.861
0.100	0.007854	0.0663	55.1-64.6	0.900	0.6362	5.37	0.709-0.768
0.112	0.009852	0.08315	44.4-51.0	0.950	0.7088	5.98	0.637-0.690
0.125	0.01227	0.1036	35.6-41.0	1.000	0.7854	6.63	0.574-0.622
0.140	0.01539	0.1299	28.4-32.7	1.060	0.8825	7.45	0.511-0.554
0.150	0.01767	0.1491	24.7-28.5	1.120	0.9852	8.32	0.458-0.496
0.160	0.02011	0.1697	21.7-25.0	1.180	1.094	9.23	0.413-0.447
0.170	0.02270	0.1916	19.3-22.2	1.250	1.227	10.36	0.368-0.398
0.180	0.02545	0.2148	17.2-19.8	1.320	1.368	11.55	0.330-0.357
0.190	0.02835	0.239	15.4-17.7	1.400	1.539	12.99	0.293-0.318
0.200	0.03142	0.2652	14.1-15.9	1.500	1.767	14.91	0.255-0.277
0.212	0.03530	0.2979	12.5-14.1	1.600	2.011	16.97	0.224-0.243

Constantan&Manganin wire data table

Dia.(mm)		Sectional area nominal value(mm²)	Resistance per meter (Ω/m)
Dia.(mm)			6J12X		6J8X		6J13X		6J40X
Nominal value (mm)	Tolerance		Nominal value (Ω/m)	Tolerance	Nominal value (Ω/m)	Tolerance	Nominal value (Ω/m)	Tolerance	Nominal value (Ω/m)	Tolerance
0.020	±0.002	0.000314	1496	±10%					1528	±10%
0.022		0.000380	1236						1263
0.025		0.000491	957						978
0.028		0.000616	763						780
0.032	±0.003	0.000804	584	±8%		±8%		±8%	597	±8%
0.036		0.001018	462						472
0.040		0.001257	374						382
0.045		0.001590	296						302
0.050		0.001963	239						244
0.056		0.002463	191						195
0.063		0.003117	151						154
0.071		0.003959	119						121
0.080		0.005027	93.5		69.6		87.5		95.5
0.090		0.006362	73.9		55.0		69.2		75.5
0.100		0.007854	59.8		44.6		56.0		61.1
0.112	±0.005	0.009852	47.7	±7%	35.5	±7%	44.7	±7%	48.7	±7%
0.125		0.01227	38.3		28.5		35.9		39.1
0.140		0.01539	30.5		22.7		28.6		31.2
0.160		0.02011	23.4		17.4		21.9		23.9
0.180		0.02545	18.5		13.8		17.3		18.9
0.200	±0.005	0.03142	15.0	±6%	11.1	±6%	14.0	±6%	15.3	±6%
0.224		0.03941	11.9		8.88		11.2		12.2
0.250		0.04909	9.57		7.13		8.96		9.78
0.280		0.06158	7.63		5.68		7.15		7.80
0.315	±0.010	0.007793	6.03	±5%	4.49	±5%	5.65	±5%	6.16	±5%
0.355		0.09898	4.75		3.54		4.45		4.85
0.400		0.1257	3.74		2.79		3.50		3.82
0.450		0.1590	2.96		2.20		2.77		3.02
0.500	±0.015	0.1963	2.39	±4%	1.78	±4%	2.24	±4%	2.44	±4%
0.560		0.2463	1.91		1.42		1.79		1.95
0.630		0.3117	1.51		1.12		1.41		1.51
0.710		0.3959	1.19		0.884		1.11		1.21
0.750		0.4418	1.06		0.792		1.00		1.09
0.800		0.5027	0.935		0.696		0.875		0.955
0.850		0.5674	0.828		0.617		0.775		0.846
0.900		0.6362	0.739		0.550		0.692		0.755
0.950		0.7088	0.663		0.494		0.621		0.677
1.000		0.7854	0.598		0.446		0.560		0.611
1.060	±0.020	0.8852	0.533	±4%	0.397	±4%	0.499	±4%	0.544	±4%
1.120		0.9852	0.477		0.355		0.447		0.487
1.180		1.094	0.430		0.320		0.402		0.439
1.250		1.227	0.383		0.285		0.359		0.391
1.320		1.368	0.343		0.256		0.322		0.351
1.400		1.539	0.305		0.227		0.286		0.312
1.500		1.767	0.266		0.198		0.249		0.272
1.600		2.011	0.234		0.174		0.219		0.239
1.700	±0.025	2.270	0.207	±4%	0.154	±4%	0.194	±4%	0.211	±4%
1.800		2.545	0.185		0.138		0.173		0.189
1.900		2.835	0.166		0.123		0.155		0.169
2.000		3.142	0.15		0.111		0.140		0.153
2.120		3.530	0.133		0.0992		0.125		0.136
2.240	±0.030	3.941	0.119	±4%	0.0888	±4%	0.112	±4%	0.122	±4%
2.360		4.374	0.107		0.0800		0.101		0.110
2.500		4.909	0.0957		0.0713		0.0896		0.0978
2.650		5.515	0.0852		0.0635		0.0798		0.0870
2.800		6.158	0.0763		0.0568		0.0715		0.0780
3.000		7.069	0.0665		0.0495		0.0622		0.0679
3.150	±0.035	7.793	0.0603	±4%	0.0449	±4%	0.0565	±4%	0.0616	±4%
3.350		8.814	0.0533		0.0397		0.0499		0.0545
3.550		9.898	0.0475		0.0354		0.0445		0.0485
3.750		11.04	0.0426		0.0317		0.0398		0.0435
4.000		12.57	0.0374		0.0279		0.0350		0.0382
4.250		14.19	0.0331		0.0247		0.0310		0.0338
4.500		15.90	0.0296		0.0220		0.0277		0.0302
4.750	±0.040	17.72	0.0265	±4%	0.0198	±4%	0.0248	±4%	0.0271	±4%
5.000	±0.040	19.63	0.0239	±4%	0.0178	±4%	0.0224	±4%	0.0244	±4%
5.300	±0.050	22.06	0.0213	±4%	0.0159	±4%	0.0199	±4%	0.0218	±4%
5.600	±0.050	24.63	0.0191	±4%	0.0142	±4%	0.0179	±4%	0.0195	±4%
6.000	±0.060	28.27	0.0166	±4%	0.0124	±4%	0.0156	±4%	0.017	±4%
6.300	±0.060	31.17	0.0151	±4%	0.0112	±4%	0.0141	±4%	0.0154	±4%

Sheet size

Thickness(mm)	Tolerance	Width(mm)	Tolerance
0.1	±0.010	50 75 100	Width＜100mm, ±1 Width≥100mm, ±1.5
0.112
0.125
0.140
0.160
0.180	±0.0100-0.020
0.200
0.224
0.250
0.280
0.315
0.355
0.400	±0.020	50 75 100 125 150 175
0.450
0.500
0.560	±0.020-0.030
0.630
0.710
0.800	±0.030
0.900	±0.030
1.000	±0.040
1.120
1.250
1.400	±0.050
1.600	±0.050
1.800	±0.060
2.000	±0.060

Manganin strip table, Cross-sectional area(mm2)

Width(mm) Thickness(mm)		6.3	8.0	10.0	12.5	16.0	20.0	25.0	31.5	40.0
Width(mm) Thickness(mm)		±0.3	±0.3	±0.3	±0.4	±0.4	±0.5	±0.5	±0.6	±0.7
0.180	±0.010	1.066
0.200		1.184
0.224		1.327	1.684
0.250	+0.01 -0.02	1.481	1.880	2.450
0.280		1.658	2.106	2.744
0.315		1.865	2.369	3.087	3.859
0.355		2.102	2.670	3.479	4.349
0.400	±0.020	2.369	3.008	3.920	4.900	6.272
0.450		2.665	3.384	4.410	5.513	7.056	8.820	11.03
0.500		2.961	3.760	4.900	6.125	7.840	9.800	12.25
0.560	+0.020 -0.030	3.316	4.211	5.488	6.860	8.781	10.98	13.72
0.630		3.731	4.738	6.174	7.718	9.878	12.35	15.44
0.710		4.205	5.339	6.958	8.698	11.13	13.92	17.40
0.800	±0.030	4.738	6.016	7.840	9.800	12.54	15.68	19.60	24.70	31.36
0.900	±0.030	5.33	6.768	8.820	11.03	14.11	17.64	22.05	27.78	35.28
1.000	±0.040	5.922	7.520	9.800	12.25	15.68	19.60	24.50	30.87	39.20
1.120		6.633	8.422	10.98	13.72	17.56	21.95	27.44	34.57	43.90
1.250		7.403	9.400	12.25	15.31	19.60	24.50	30.63	38.59	49.00
1.400	±0.050	8.291	10.53	13.72	17.15	21.95	27.44	34.30	43.22	54.88
1.600	±0.050	9.475	12.03	15.68	19.60	25.09	31.36	39.20	49.39	62.72
1.800	±0.060	10.66	13.54	17.64	22.05	28.22	35.28	44.10	55.57	70.56
2.000	±0.060	11.84	15.04	19.60	24.50	31.36	39.20	49.00	61.74	78.40
Note : The effective cross-sectional area of strip is the product of its width and thickness multiplies the following coefficient: Width<10mm, multiplied by 0.98; Width≥10mm, multiplied by 0.94.

Some key features of 6J8 include:

Stable Resistance:

6J8 Precision Resistance Wire is known for its stable electrical resistance, even under varying environmental conditions. This makes it suitable for highly accurate measuring instruments and calibration resistors.

Low Temperature Coefficient of Resistance (TCR):

The alloy has a low TCR, meaning its resistance changes very little with temperature fluctuations, which is critical for precision applications in fields like metrology and electrical testing.

Thermal Stability:

It can operate effectively over a wide range of temperatures, making it ideal for high-precision applications in temperature-compensated circuits or high-temperature environments.

Corrosion Resistance:

6J8 wire is resistant to oxidation and corrosion, allowing it to maintain its performance over time, even in challenging environments like industrial or outdoor settings.

Mechanical Strength:

The wire is strong and durable, with good tensile strength, making it suitable for applications where the wire might be subjected to mechanical stress or need to be drawn into thin, flexible forms.

Application:

Precision Resistors:

Used in the construction of high-accuracy resistors for industrial, laboratory, and commercial use, particularly in calibration standards and measurement instruments.

Current Sensing and Shunt Resistors:

Employed in current sensing applications, where precise measurements of current are required without significantly affecting the circuit's operation. Shunt resistors made from 6J8 wire are widely used in ammeters and power supplies.

Temperature Compensation:

The low TCR makes it ideal for use in temperature-compensated circuits, where resistance stability is essential for accuracy under varying temperatures.

High-Precision Electrical Components:

Used in the manufacturing of thermistors, thermistor probes, and other temperature-sensitive components in which the resistance must remain stable regardless of ambient temperature changes.

Aerospace and Military:

Given its resistance to corrosion and high mechanical stability, 6J8/6J8P/6J8X wire is sometimes found in aerospace or military applications where high reliability in harsh environments is essential.

Advantages:

Long-Term Stability: The alloy maintains consistent electrical performance over extended periods, even under varying temperature and environmental conditions.
High Precision: Offers extremely low resistance variation, essential for precision instrumentation.
Corrosion and Oxidation Resistance: Suitable for use in harsh environments, providing long service life.
Mechanical Durability: Can be fabricated into fine wires or coiled shapes without compromising on strength.

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6J8/6J8P/6J8X Precision Resistance Wire Accurate And Performance In Scientific Industrial And High-Tech Fields