3.7*1500mm Straight and Bright Thermocouple Alloy Rod

• Product Type: Strip
• Material: Nicr
• Carbon Content: Low Carbon
• Product Name: Chromel/Alumel Rod
• Condition: Bright,Soft
• Application: for Temperature Measurement
• Model NO.: K
• Size: 0.025mm-12mm Diameter
• Transport Package: Wooden Case, Plywood Pallet
• Specification: GB/T 1234-2012
• Trademark: Ualloy
• Origin: China
• HS Code: 75062000
• Production Capacity: 500tons/Year

Product Description

3.7*1500mm straight and bright thermocouple alloy rod

TYPE K (CHROMEL vs ALUMEL ) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.
 
1. Chemical Composition
 

Material	Chemical composition (%)
	Ni	Cr	Si	Mn	Al
KP(Chromel)	90	10
KN(Alumel)	95		1-2	0.5-1.5	1-1.5

 
 
2. Physical properties and Mechnical properties
 

Material	Density(g/cm3)	Melting pointºC)	Tensile Strength(Mpa)	Volume resistivity(μΩ.cm)	Elongation rate (%)
KP(Chromel)	8.5	1427	>490	70.6(20ºC)	>10
KN(Alumel)	8.6	1399	>390	29.4(20ºC)	>15

 
3. EMF Value range at different temperature
 

Material	EMF value Vs Pt(μV)
	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
KP(Chromel)	2816~2896	5938~6018	9298~9378	12729~12821	16156~16266	19532~19676
KN(Alumel)	1218~1262	2140~2180	2849~2893	3600~3644	4403~4463	5271~5331

 

EMF value Vs Pt(μV)
700ºC	800ºC	900ºC	1000ºC	1100ºC
22845~22999	26064~26246	29223~29411	32313~32525	35336~35548
6167~6247	7080~7160	7959~8059	8807~8907	9617~9737