
Our Type B MI Thermocouple cable is built to handle the extreme heat of metallurgy applications. 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 wrapped in a stainless steel or Inconel sheath. This setup delivers precise temperature readings from 0°C to 1700°C, perfect for intense environments like steel smelting and glass manufacturing. Type B shines for its stability and accuracy at ultra-high temperatures, making it a top choice for demanding metallurgy processes.
Why Choose Our Type B MI Thermocouple Cable?
We’ve designed our Type B MI cable to perform flawlessly in the harshest high-temperature conditions. The MgO insulation ensures exceptional thermal stability and dielectric strength, while the sheath protects against corrosion and extreme heat. Whether you’re monitoring a blast furnace or a ceramic kiln, our cables deliver reliable, accurate results. We offer full customization—choose your cable length, diameter, or sheath material to fit your setup. Compliant with IEC 60584 Class 1 and ASTM E230 standards, our cables guarantee precision and durability for metallurgy applications.
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 heating up, valued at $1.3 billion in 2023 and projected to reach $2.2 billion by 2032, with a CAGR of 6.3%. What’s driving this growth? The metallurgy, glass, and ceramics industries are pushing for greater efficiency and precision in high-temperature processes. Automation and Industry 4.0 are increasing demand for robust, high-accuracy sensors capable of withstanding extreme conditions. Our Type B MI cables are tailored to meet these needs, offering unmatched performance for ultra-high-temperature applications in metallurgy and beyond.
Applications
Our Type B MI thermocouple cables are engineered for the toughest metallurgy environments. In steel production, they monitor smelting and refining processes to ensure consistent quality. Glass manufacturing relies on them for precise temperature control in melting furnaces. Ceramic kilns use them to maintain optimal firing conditions, while aerospace applications depend on them for high-temperature material testing. Their ability to perform reliably up to 1700°C in oxidizing and inert atmospheres makes them a trusted choice across these industries.
Comparison with Competitors
Our Type B MI thermocouple cables stand out for their quality and precision in high-temperature metallurgy. While others may offer standard noble metal cables, we provide fully customizable solutions with sheath options optimized for extreme heat and corrosion resistance. Every cable undergoes rigorous testing—calibration, insulation resistance, and thermal cycling—to ensure top performance. With over 500,000 meters of cable in stock, we deliver fast without compromising quality. Our user-friendly online portal and multilingual support team make ordering and technical assistance seamless, keeping your operations efficient.
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 | Metallurgy, glass | Furnaces, aerospace | 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 tackle the extreme demands of metallurgy applications. With superior stability, customizable designs, and durable sheaths, they’re perfect for industries like steel, glass, and ceramics. Backed by decades of expertise and a commitment to quality, our cables deliver the precision you need for high-temperature processes. Contact us today to customize a solution that fits your metallurgy 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 metallurgy applications.What materials are used in Type B MI thermocouple cables?
It features Platinum-Rhodium conductors, magnesium oxide (MgO) insulation, and a stainless steel or Inconel sheath for extreme heat and corrosion resistance.What are the main applications for Type B MI thermocouple cables?
They’re used in high-temperature metallurgy processes like steel smelting, glass manufacturing, and ceramic kilns for precise temperature monitoring.How does Type B compare to Type S thermocouples?
Type B offers higher temperature capability (up to 1700°C) and better stability at extreme temperatures compared to Type S, which is limited to 1600°C.Which industries rely on Type B MI thermocouple cables?
Metallurgy, glass production, ceramics, and aerospace industries use them for reliable temperature control in high-heat environments.Why is mineral insulation critical for Type B cables?
MgO insulation provides superior thermal stability and dielectric strength, ensuring accuracy in extreme high-temperature metallurgy processes.What are the industry trends for Type B MI cables?
Growing demand for high-precision sensors in metallurgy and advanced manufacturing drives market growth, with a projected CAGR of 6.3% through 2032.Can Type B MI thermocouple cables be customized?
Yes, we offer custom lengths, diameters, sheath materials, and calibration to meet specific high-temperature metallurgy needs.