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1.2mm or 3.2mm or 4.0mm J type Thermocouple Bare Wire for Mineral Insulated Cable
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 |
4. Application:
Heating - Gas burners for ovens
Cooling - Freezers
Engine protection - Temperatures and surface temperatures
High temperature control - Iron casting
5. Packing & Delivery
Packaging Details: 500m/1000m per roll with plastic film wrapped
and carton package. As the order quantity and customer requirement.
Delivery Detail: By sea / air. About 7 days, as the order quantity.
6.About us
Shanghai Tankii Alloy Material Co., Ltd. specialized in production
of thermocouple wire, thermocouple cable, thermocouple connector
and other thermocouple products.
Based on the principle of "first quality, sincere service", our
managing ideology is pursuing technology innovation and creating
the top brand in the alloy field. We persist in Quality - the
foundation of the survival. It is our forever ideology to serve you
with full heart and soul. We committed to provide customers all
over the world with high-quality, competitive products and perfect
service.
Our products, such us nichrome wire, nichrome strip, fecral wire,
fecral strip, thermocouple wire, nickel wire, nickel strip have
been exported to Europe, USA, India, Southest Asia, South
America,etc.
We are willing to establish strong and long-time partnership with
our customers
Your inquiry is a gift for us, your reply is a trust to us, your
trust will bring us to provide you the best services in the
business.
Welcome to call me or email to me for more info on thermocouple
wire & cable.