Diameter 3.0mm type K oxidized chromel and alumel bare wire for
thermocouple
Type K oxidized chromel and alumel bare wire 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.
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 |
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 |
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 |
Package
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
want.
If we do not have, for spool wire, we can produce 1 spool, about
2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the
delivery for sample order?
Just need to provide your address information, we will check the
express cost, you can arrange the express cost together with sample
value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery
and total amount. Let's talk more in details after getting your
detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can
provide, customer need to bear the International express cost.
6. What's our working time?
We will give you reply through email/phone Online contact tool
within 24 hours. No matter working day or holidays.
