Type K Chrome Rod /Bar, Kp /Kn Rod for Cooling-Freezers

• Product Type: Rod
• Material: Type K;Type N
• Carbon Content: -
• PCD: -
• ET: -
• Hole: -
• Transport Package: Type K Rod
• Specification: Dia: 6-12mm; Length: 500-1000mm
• Trademark: OHMALLOY
• Origin: China(Shanghai)
• HS Code: 7202999000
• Production Capacity: 50 Tons Per Month

Product Description

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.It has high EMF against Platinum 67,excellent temperature accuracy,senstivity and stability,with a low cost.

 

Chemical Content(%)

Item No	Ni	Cr	Al	Mn	Si
Chromel	90	10	-	-	-
Alumel	95	-	2	2	1

 

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

 

Style of supply

Item No	Size
Chromel Rod	Diameter 6-12mm; Length 500-1000mm
Alumel Rod	Diameter 6-12mm; Length 500-1000mm

 

 

OHMALLOY have 20 years in producing the thermocouple alloy strip. The thickness can be from 0.1mm to 2mm while the width can be from 5mm to 210mm.

Usually, we make the normal size such as 1mmX50mm, 0.75mmX50mm, 0.75mmX100mm, they are mainly used for all kinds of thermocouple plug pin. And we also can make special size based on client's unique requirement.

For the type KN, We have two types. One is china standard NiSi3 ( Ni 97%, Si 3%), the other one is NiAl ( IEC standard).

 

The available thermocouple type and alloy material:

Name and code of alloy wires
Positive		Negative
Name	Code	Name	Code
NiCr10 (Chromel)	KP	NiSi3 /(Alumel) (China standard)	KN
		NiAl/(Alumel) (IEC standard)	KN
NiCr14.2Si	NP	NiSi4	NN
NiCr10 (Chromel)	EP	CuNi45 (Constantan)	EN
Fe	JP	CuNi45 (Constantan)	JN
Cu	TP	CuNi45 (Constantan)	TN

 

Thermocouple wire electromotive force (EMF) Tolerance:

Thermocouple Type	Grade	Temperature range ºC	Electromotive force(EMF) Tolerance
			IEC (EN)60584	ASTM E230
Type K & Type N	1	-40~1100	±1.5ºC or ±0.4%t	±1.1ºC or ±0.4%
	2	-40~1300	±2.5ºC or ±0.75%t	±2.2ºC or ±0.75%
Type E	1	-40~1100	±1.5ºC or ±0.4%t	±1.0ºC or ±0.4%
	2	-40~1300	±2.5ºC or ±0.75%t	±1.7ºC or ±0.5%
Type J	1	-40~750	±1.5ºC or ±0.4%t	±1.1ºC or ±0.4%
	2	-40~750	±2.5ºC or ±0.75%t	±2.2ºC or ±0.75%
Type T	1	-40~350	±0.5ºC or ±0.4%t	±0.5ºC or ±0.4%
	2	-40~350	±1.0ºC or ±0.75%t	±1.0ºC or ±0.75%