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Thermocouple Type K Alumel / Chromel Rod / Stick / Bar 6mm 8mm 9mm 10mm 12mm
TYPE K (CHROMEL vs ALUMEL ) is used in oxidizing, inert or dry reducing atmospheres. It must be protected from sulfurous and marginally oxidizing atmospheres. It is reliable and has high 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 point℃)
Tensile Strength(Mpa)
Volume resistivity(μΩ.cm)
Elongation rate (%)
KP(Chromel)
8.5
1427
>490
70.6(20℃)
>10
KN(Alumel)
8.6
1399
>390
29.4(20℃)
>15
3. EMF Value Range at Different Temperature
Material
EMF value Vs Pt(μV)
100℃
200℃
300℃
400℃
500℃
600℃
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)
700℃
800℃
900℃
1000℃
1100℃
22845~22999
26064~26246
29223~29411
32313~32525
35336~35548
6167~6247
7080~7160
7959~8059
8807~8907
9617~9737
Thermocouple Variety and Index
Variety
Type
Measurement Range(°C)
NiCr-NiSi
K
–200–1300
NiCr-CuNi
E
–200–900
Fe-CuNi
J
–40–750
Cu-CuNi
T
–200–350
NiCrSi-NiSi
N
–200–1300
NiCr-AuFe0.07
NiCr-AuFe0.07
–270–0
0.5″ 12.7mm KP Chromel KN Alumel Thermocouple Type K Rod Application
The characteristic of Type K is that it has strong anti-oxidation performance, and should be used continuously in an oxidizing and inert atmosphere. The long-term use temperature is 1000℃ and the short-term 1200 ℃. It is the most widely used among all thermocouples; (it cannot be used reducing gas atmosphere).
Thermocouple Working and Measuring Temperature Range:
Thermocouple Material
Working temperature Range and Tolerence
Class I
Class II
Index
Anode
Cathode
Measuring termperature
Tolerence
Measuring termperature
Tolerence
K
NiCr10
NiAl2
-40℃-1000℃
±1.5℃ or ±0.4%*T
40℃-1200℃
±2.5℃ or 0.75%*T
T
Cu
CuNi40
-40℃-350℃
40℃-350℃
±1℃ or 0.75%*T
J
Fe
CuNi40
-40℃-750℃
40℃-750℃
±2.5℃ or 0.75%*T
E
NiCr10
CuNi45
-40℃-800℃
40℃-900℃
N
NiCr14Si
NiSi4Mg
-40℃-1000℃
40℃-1200℃
±2.5℃ or 0.75%*T
R
Pt-13%Rh
Pt
0℃-1000℃
0℃-600℃
±1.5℃
S
Pt-10%Rh
1000℃-1600℃
±(1+0.003)
600℃-1600℃
0.25%*T
B
Pt-30%Rh
Pt-6%Rh
-
-
600℃-1700℃
±1.5℃ or 0.25%*T
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2008
Total Annual:
8000000-100000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig... Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig...
