Cuprothal®

Thermocouple strip数据表

数据表已更新 2023-10-18 11:36 （取代之前所有版本）

免责声明：建议仅供参考，针对特定应用场合的材料适用性我们需要了解实际使用条件后才能予以确认。在产品持续研发过程中，我们可能需要更改技术数据，恕不另行通知。该数据表仅适用于以 Kanthal^® 商标推出的材料。

Cuprothal^® is an austenitic copper-nickel alloy (CuNi alloy) with low resistivity. It is used for the negative leg of the following types of thermocouples and compensating cables: E, J, T and KCB (VX). Cuprothal^® can be used at temperatures down to 20 K where its Seebeck coefficient is about 8 μV / K.

Thermocouple type E has the highest emf output of any common thermocouple and is for this reason used in thermal generators (thermopiles).

Cuprothal^® type T is matched with electrolytic copper (ASTM standard B3). Thermocouple type T is both used in laboratory and industrial applications.

Cuprothal^® type KNCB (VNX) is matched with electrolytic copper when used in compensating cables for thermocouples type K.

Chemical composition

	Ni %	Mn %	Fe %	Co %	Cu %
Nominal composition	44.0	0.5	0.5	0.3	Bal.

Mechanical properties

Wire size	Yield strength	Tensile strength	Elongation	Hardness
Ø	R_p0.2	R_m	A
mm	MPa	MPa	%	Hv
1.50	250	480	30	100-130

Physical properties

Density g/cm³	8.9
Electrical resistivity at 20°C Ω mm²/m	0.49

Temperature factor of resistivity
Temperature °C	100	200	300	400	500	600
Ct	1.002	1.002	1.001	1.005	1.017	1.037

Coefficient of thermal expansion
Temperature °C	Thermal Expansion x 10^-6/K
20 - 100	14

Thermal conductivity
Temperature °C	20
W m^-1 K^-1	21

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.410

Melting point °C	1280
Magnetic properties	The material is non-magnetic

Thermoelectric properties

CUPROTHAL™JNX

Nominal emf values vs Iron
Temperature °C	100	200
mV	5.269	10.779

ITS 90 - Reference junction 0°C

CUPROTHAL^®TNX

Nominal emf values vs electrolytic copper (ASTM B3)
Temperature °C	100	200
mV	4.279	9.288

ITS 90 - Reference junction 0°C

CUPROTHAL^®ENX

Nominal emf values vs Thermothal P (KP)
Temperature °C	100	200
mV	6.319	13.421

ITS 90 - Reference junction 0°C

CUPROTHAL^®KNCB (VNX)

Nominal emf values vs electrolytic copper (ASTM B3)
Temperature °C	100
mV	4.096

ITS 90 - Reference junction 0°C

Cuprothal®

Chemical composition

Mechanical properties

Physical properties

Thermoelectric properties

CUPROTHAL™JNX

CUPROTHAL^®TNX

CUPROTHAL^®ENX

CUPROTHAL^®KNCB (VNX)

About Alleima

关于 Kanthal

Cuprothal®

Chemical composition

Mechanical properties

Physical properties

Thermoelectric properties

CUPROTHAL™JNX

CUPROTHAL®TNX

CUPROTHAL®ENX

CUPROTHAL®KNCB (VNX)

CUPROTHAL^®TNX

CUPROTHAL^®ENX

CUPROTHAL^®KNCB (VNX)