
Our Type B MI Thermocouple Cable is engineered for the hottest furnace applications out there. Made with Platinum-30% Rhodium (Pt-30%Rh) and Platinum-6% Rhodium (Pt-6%Rh) conductors, it’s packed with high-purity magnesium oxide (MgO) insulation and encased in a stainless steel or Inconel sheath. This setup delivers spot-on temperature readings from 0°C to 1700°C, perfect for extreme environments like steel furnaces and glass production. Type B is a premium choice for its unmatched stability and accuracy at ultra-high temperatures.
Why Choose Our Type B MI Thermocouple Cable?
We’ve built our Type B MI cable to thrive in the most intense furnace conditions. The MgO insulation provides top-notch thermal stability and dielectric strength, while the sheath stands up to extreme heat and corrosion. Whether you’re running a steel smelting furnace or a ceramic kiln, our cables deliver reliable, precise results. We offer full customization—pick your cable length, diameter, or sheath material to match your setup. Compliant with IEC 60584 Class 1 and ASTM E230 standards, our cables ensure the precision and durability you need.
Electrical Performance
| Parameter | Low-Voltage Cable (0.6/1kV) | Medium-Voltage Cable (6~35kV) | High-Voltage Cable (110kV Min) |
| Rated Voltage (U₀/U) | 0.6/1 kV | 6/10-26/35 kV | ≥110 kV |
| Insulation Resistance (MΩ·km) | ≥100 | ≥200 | ≥500 |
| AC Voltage Withstand (kV) | 3.5 | 21~52 | ≥160 |
| DC Resistance of Conductor (Ω/km) | Compliance to IEC standards | Compliance to IEC standards | Compliance to IEC standards |
Mechanical Performance
| Performance Indicator | Steel Tape Armored | Steel Wire Armored | Aluminum Tape/Stainless Steel Armored |
| Tensile Strength (N/mm²) | 300-500 | 400-600 | 150-250 |
| Compression Performance (N) | ≥3000 | ≥1500 | ≥1000 |
| Minimum Bend Radius | 6×Cable Outer Diameter | 10×Cable Outer Diameter | 8×Cable Outer Diameter |
Thermal Performance
| Working Temperature Range (°C) | -40 to +90(Standard Insulation) |
| Short-Circuit Temperature (5s) (°C) | 160~250(depending on material) |
| Flame Retardant Performance | Compliace to IEC 60332 Standard |
The thermocouple market is on fire, valued at $1.3 billion in 2023 and expected to hit $2.3 billion by 2032, with a CAGR of 6.4%. What’s fueling this? Metallurgy, glass, and ceramics industries are pushing for higher efficiency and precision in extreme high-temperature processes. Automation and Industry 4.0 are driving demand for robust, high-accuracy sensors that can handle the heat. Our Type B MI cables are designed to meet these challenges, offering superior performance for furnace applications where temperatures push the limits.
Applications
Our Type B MI thermocouple cables are built for extreme high-temperature environments. In metallurgy, they monitor steel smelting and refining processes to ensure top-quality output. Glass manufacturing depends on them for precise temperature control in melting furnaces. Ceramic kilns use them to maintain consistent firing conditions, while aerospace relies on them for high-temperature material testing. Their ability to handle temperatures up to 1700°C in oxidizing and inert atmospheres makes them a go-to solution for these demanding industries.
Comparison with Competitors
Our Type B MI thermocouple cables lead the way in quality and performance. While others may offer standard noble metal cables, we provide fully customizable solutions with sheath options optimized for extreme furnace conditions. Every cable undergoes rigorous testing—calibration, insulation resistance, and thermal cycling—to ensure unbeatable reliability. With over 500,000 meters of cable in stock, we deliver fast without cutting corners on quality. Our user-friendly online portal and multilingual support team make ordering and technical assistance a breeze, keeping your operations running smoothly.
Comparison Table: Type B vs. Other Thermocouple Types
Parameter | Type B (Pt-30%Rh/Pt-6%Rh) | Type S (Pt-10%Rh/Pt) | Type R (Pt-13%Rh/Pt) | Type K (NiCr-NiAl) |
|---|---|---|---|---|
Temperature Range | 0°C to 1700°C | 0°C to 1600°C | 0°C to 1600°C | -270°C to 1260°C |
Accuracy (Class 1) | ±0.5% (above 600°C) | ±0.5% (above 600°C) | ±0.5% (above 600°C) | ±1.1°C or 0.4% |
Oxidation Resistance | Excellent | Excellent | Excellent | Good |
Stability (High Temp) | Superior | High | High | Moderate |
Sulfur Resistance | Moderate | Moderate | Moderate | Moderate |
Common Applications | Furnaces, metallurgy | Aerospace, kilns | Kilns, aerospace | General industrial |
Sheath Materials | SS, Inconel | SS, Inconel | SS, Inconel | Inconel, SS |
Cost | High | High | High | Moderate |
Our Type B MI thermocouple cables are built to conquer the toughest furnace applications. With superior stability, customizable designs, and durable sheaths, they’re perfect for industries like metallurgy, glass, and ceramics. Backed by decades of expertise and a commitment to quality, our cables deliver the precision you need for extreme high-temperature processes. Contact us today to customize a solution that fits your furnace needs perfectly.




About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:
What is a Type B MI thermocouple cable?
A Type B MI thermocouple cable is a mineral-insulated cable with Platinum-30% Rhodium (Pt-30%Rh) and Platinum-6% Rhodium (Pt-6%Rh) conductors, designed for accurate temperature measurements from 0°C to 1700°C in extreme furnace environments.What materials are used in Type B MI thermocouple cables?
It uses Platinum-Rhodium conductors, magnesium oxide (MgO) insulation, and a stainless steel or Inconel sheath for superior heat and corrosion resistance.What are the main applications for Type B MI thermocouple cables?
They’re used in high-temperature furnaces, steel smelting, glass production, and ceramic kilns for precise temperature monitoring.How does Type B compare to Type R thermocouples?
Type B handles higher temperatures (up to 1700°C) and offers better stability at extreme temperatures compared to Type R, which is limited to 1600°C.Which industries rely on Type B MI thermocouple cables?
Metallurgy, glass manufacturing, ceramics, and aerospace industries use them for reliable temperature control in extreme high-temperature furnaces.Why is mineral insulation critical for Type B cables?
MgO insulation ensures exceptional thermal stability and dielectric strength, maintaining accuracy in ultra-high-temperature furnace applications.What are the industry trends for Type B MI cables?
Increasing demand for precision in metallurgy and advanced manufacturing drives market growth, with a projected CAGR of 6.4% through 2032.Can Type B MI thermocouple cables be customized?
Yes, we offer custom lengths, diameters, sheath materials, and calibration to meet specific furnace application needs.