Fe/CuNi Type J Thermocouple Alloy Bare Wire

• Classification: J Type
• Model No.: J
• Range of Application: Heating, Temperature Measurement
• Positive Pole: Pure Iron
• Material Shape: Round Wire
• Certification: ISO9001, RoHS
• Model NO.: Type J Thermocouple Wire
• Diameter: 0.2-3.2mm
• Negative Pole: Copper Nickel
• Transport Package: Plywood Cases
• Specification: 3.2/2.5/2.0/1.29/0.813/0.5/0.3/0.2mm
• Trademark: HUONA
• Origin: Shanghai
• HS Code: 7505220000
• Production Capacity: 3000 Tons/Year

Product Description

 

Fe/CuNi Type J Thermocouple Alloy Bare Wire

 

Product Description

Type J Thermocouple is frequently used for its low cost and high EMF It can be used in oxidizing conditions up to 760°C. For higher temperatures, it is recommended to use large wire diameters.
Type J  thermocouple is  suitable for  oxidizing, reducing inert atmosphere or  vacuum.
 

Product Parameters

1.Chemical composition and mechanical properties
 

Product	Chemical Composition/%				Density (g/cm3)	Melting point (ºC)	Resistivity (μΩ.cm)	Tensile Strength (Mpa)
	Fe	Cu	Ni
JP(+)              Pure Iron	100	-	-		7.8	1402	12	≥240
JN(-) Copper Nickel	-	55	45		8.8	1220	49	≥390

 2.Maximum operating temperatures
 

Alloy wire Dia/mm	The long-term operating temperatures/°C	The short-term operating temperatures/°C
0.3,0.5	300	400
0.8,1.0,1.2	400	500
1.6,2.0	500	600
2.5,3.2	600	750

3.Couple JP/JN EMF reference table (μV)
 

Operating temperatures/°C	Nominal value of thermoelectric EMF	Level I
		Tolerance	Range of EMF
100	5 269	±82	5 187-5 351
200	10 779	±83	10 696-10 862
300	16 327	±83	16 244-16 410
400	21 848	±88	21 760-21 936
500	27 393	±112	27 281-27 505
600	33 102	±140	32 962-33 242
700	39 132	±174	38 958-39 306
750	42 281	±192	42 089-42 437
760	42 919	±194	42 725-43 113