20AWG Type K Thermocouple Cable KP KN Thermocouple cable/wire
Alumel(KN)is an alloy consisting of approximately 95% nickel, 2% manganese, 2% aluminium and 1% silicon. This magnetic alloy is used for thermocouples and thermocouple extension wire. In thermocouples, alumel is often used together with chromel to form type K thermocouples
(Common Name: KN, NiAl, NiSi3,Thermothal N)
Normal composition%
| Nickel |
95 |
Manganese |
2 |
| Aluminium |
2 |
Silicon |
1 |
Or
| Nickel |
97 |
Manganese |
0 |
| Chromium |
3 |
Silicon |
0 |
Properties of Alumel:
| CHARACTERISTICS: |
|
| Temperature coefficient |
0.00032 K−1 |
| Electrical resistivity |
0.294 µΩ m |
| Mechanical properties |
|
| Elongation at break |
<44% |
| Thermal conductivity |
30 W/m/K |
| Tensile strength |
620-780 MPa |
Style of supply
| Alloys Name |
Type |
Dimension |
| Chromel-W |
Wire |
D=0.05mm~12mm |
| Chromel-R |
Ribbon |
W=0.5-10m |
T=0.05~1.5mm |
| Chromel-S |
Strip |
W=10~150mm |
T=0.1~3.0 |
| Chromel-B |
Bar |
Dia=5-12mm |
L=50~1500 |
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