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Tempsens provides precision-made alloys for thermocouples that are engineered to deliver consistent EMF output regardless of the temperature across a wide temperature range. Each conductor is produced through strict adherence to compositional tolerances and provides excellent calibration stability for demanding industrial applications such as heat treatment furnaces, petrochemical reactors, power generation plants, and very low-temperature applications.
Tempsens thermocouple alloys meet IEC 60584 and ASTM E230 specifications for base metal and refractory metal thermocouples. Regardless of whether you require a low-cost general-purpose thermocouple wire, or a high-temperature nickel–molybdenum thermocouple for reducing atmosphere applications, Tempsens has the calibrated alloy pair available in bare wire, spooled, and extension-grade forms to meet your specific process requirements.

About Thermocouple Alloys

Thermocouple Alloy Specifications and Temperature Ratings

Jenis	Konduktor (*) Komposisi Kimia %					Konduktor (-) Komposisi Kimia %			Kisaran suhu	Standar Amerika ASTM E230/ANSI MC95.2			Standar Eropa IEC 584
Jenis	Tidak	Bahasa Inggris: Cr	Fe	Aku	Yang lain	Aku	Tidak	Yang lain	Kisaran suhu	Kisaran T/C	Kelas 1 (0.4%)	Kelas 2 (0.75%)	Kisaran T/C	Kelas 1 (0.4%)	Kelas 2 (0.75%)
Bahasa Inggris: K	90	10	–	–	–	–	94	Mn+Si+ Yang lain	-200°C sampai +1260 derajat celcius	0 sampai 1260 derajat celcius	Suhu ±2,2°C	Suhu ±1,1°C	0°C hingga 1260°C	Suhu ±1,5°C	Suhu ±2,5°C
N	84.4	14.2	–	–	Jika 1.4	–	95.6	Si4.4	-200°C sampai +1260 derajat celcius	0°C sampai 1260 derajat celcius	Suhu ±2,2°C	Suhu ±1,1°C	0°C hingga 1260°C	Suhu ±1,5°C	Suhu ±2,5°C
J	–	–	100	–	–	Bal	44	Mn+	-40°C sampai +760 derajat celcius	0°C sampai 760 derajat celcius	Suhu ±2,2°C	Suhu ±1,1°C	0°C hingga 760°C	Suhu ±1,5°C	Suhu ±2,5°C
T	–	–	–	100	–	Bal	44	Mn+	-200°C sampai +370 derajat celcius	0°C sampai 370 derajat celcius	Suhu ±1°C	±0,5 derajat celcius	0°C hingga 370°C	±0,5 derajat celcius	Suhu ±1°C
Bahasa Inggris	90	10	–	–	–	Bal	44	Mn+	-200°C sampai +870 derajat celcius	0°C sampai 870 derajat celcius	Suhu ±1,7°C	Suhu ±1,1°C	0°C hingga 870°C	Suhu ±1,5°C	Suhu ±2,5°C

Thermocouple Types, Materials and Applications

Jenis Termokopel	Bahan + & –	Kisaran suhu	Aplikasi
Bahasa Inggris	Kromel & Konstantan (Ni-Cr & Cu-Ni)	-200 hingga 900°C	Media inert, Media pengoksidasi
J	Besi & Konstantan (Fe & Cu-Ni)	0 hingga 750°C	Media inert, Media pengoksidasi, Media pereduksi Vakum
Bahasa Inggris: K	Kromel & Alumel (Ni-Cr & Ni-Al)	-200 hingga 1250°C	Media inert, Media pengoksidasi
N	Nikrosil & Nisil (Ni-Cr & Ni-Si)	-270 hingga 1300°C	Media inert, Media pengoksidasi
T	Tembaga & Konstantan (Cu & Cu-Ni)	-200 hingga 350°C	Media inert, Media pengoksidasi, Media pereduksi Vakum

Thermocouple Temperature Limits by Wire Size

Jenis termokopel	Diameter
Jenis termokopel	3,25 mm	1,63 mm	0,81 mm2	0,51 mm2	0,33 mm2	0,25 mm2
Bahasa Inggris: K	1260 derajat celcius	1090 derajat celcius	980 derajat celcius	870 derajat celcius	870 derajat celcius	760 derajat celcius
N	760 derajat celcius	590 derajat celcius	480°C	370 derajat celcius	370 derajat celcius	320 derajat celcius
J	1260 derajat celcius	1090 derajat celcius	980 derajat celcius	870 derajat celcius	870 derajat celcius	760 derajat celcius
T	350°C	350°C	260 derajat celcius	200 derajat celcius	200 derajat celcius	150 derajat celcius
Bahasa Inggris	870 derajat celcius	650 derajat celcius	540 derajat celcius	430 derajat celcius	430 derajat celcius	370 derajat celcius

Thermocouple Properties

EMF output can change as temperature changes; it will be measured with the Seebeck coefficient
Type E thermocouple alloys provide the best (although still confusing) Seebeck coefficients among base metals.
Chromel-Alumel(type K) will give a linear response and will work in various industries.
Type N alloys perform better than Type K (less drift) above 300°C due to the presence of ordered intermetallics.
The resistivity of constantan is very stable, which is one reason for its popularity with several thermocouple types.
Platinum alloys almost never oxidize and exhibit very stable long-term EMF.
Tungsten-rhenium alloys are very brittle yet have no competitors for temperatures above 1800°C.
All thermocouple alloys must be uniform to avoid spurious EMF from appearing along conductor cables.
The initial calibration of thermocouples and the long-term drift characteristics will be influenced by the conditions under which the cold work and annealing process takes.
The precision of alloy composition being controlled to within IEC specifications for output will be done by Tempsens.

Available Forms, Sizes and Quality Assurance

i) Available Forms – Wire, Rod and Bar in oxidized, acid wash and luster surface

ii) Available Diameters

Standard range: 0.20 mm to 3.25 mm
Custom diameters available on request for OEM requirements

iii) Quality Check and AnalysisEach spool and Coils is passed through proper testing and test certificates are provided for the following –

Calibration Test
Proof Stress Test
Torsion Test
Bend Test
Hardness Test
Tensile Strength Test
Pemanjangan
Electrical Resistivity (Loop Resistance)
Positive Material Identification(PMI) Test
Accelerated Life Test

Tanya Jawab Umum

Pertanyaan yang Sering Diajukan

Find answers to frequently asked questions related to Thermocouple Alloys.

A Type C thermocouple has a positive leg made of Tungsten with 5% rhenium and a negative leg made of Tungsten with 26% rhenium. Both legs are suited for use in vacuum or inert atmospheres, and can function at temperatures up to 2315°C.

A Type K thermocouple’s positive leg is composed of Chromel (90% Nickel and 10% Chromium). The negative leg is made of Alumel (approximately 95% Nickel with Aluminium, Manganese and Silicon) and can be utilized between -200°C and +1260°C.