Ohmalloy Material Co.,Ltd
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0.5mm*2 Type J Thermocouple compensation wire with FEP insulation
TYPE J (Iron vs Constantan) is used in vacuum, oxidizing, inert or reducing atmospheres. Iron element oxidizes rapidly at temperatures exceeding 538'C, and therefore heavier gauge wire is recommended for longer life at these temperatures.
1. Chemical Composition
| Material | Chemical composition (%) | ||||
| Ni | Cu | Si | Iron | Al | |
| JP(Iron) | 100 | ||||
| JN(Constantan) | 45 | 55 | |||
2. Physical properties and Mechnical properties
|
Material |
Density(g/cm3) |
Melting point(℃) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
| JP(Iron) | 7.8 | 1402 | >240 | 12.0(20℃) | >20 |
| JN(Constantan) | 8.8 | 1220 | >390 | 49.0(20℃) | >25 |
3. EMF Value range at different temperature
| Material | EMF value (μV) | |||||||||||
| 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | |||||||
| JP-JN | 5187~5351 | 10696~10862 | 16244~16410 | 21760~21936 | 27281~27505 | 32962~33242 | ||||||
| EMF value Vs Pt(μV) | ||||||||||||
| 700℃ | 750℃ | 760℃ | 800℃ | 900℃ | 1000℃ | |||||||
| 38958~39306 | 42089~42473 | 42725~43113 | ||||||||||
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.