TB 20110 High Sensitivity Thermostatic Bimetal Strip for Thermal Protector Relay 0.10-2.50mm
The TB 20110 thermostatic bimetal strip is a high-sensitivity composite material engineered by Huona for precision temperature sensing and control applications. It consists of a high-expansion manganese-based alloy layer (Mn75Ni15Cu10) metallurgically bonded to a low-expansion Ni36Fe Invar alloy layer. When subjected to temperature changes, the differential thermal expansion between the two layers causes the strip to bend predictably and repeatably, making it an ideal actuating element for thermal protection devices.
- High Sensitivity: Specific thermal deflection of 20.0 × 10⁻⁶/°C ensures rapid and precise response to temperature fluctuations
- Excellent Repeatability: Consistent deflection performance across thousands of thermal cycles with minimal hysteresis
- Wide Working Range: Linear temperature range from -20°C to 200°C, with a maximum operating temperature up to 350°C
- Superior Bond Integrity: Cold-roll bonding technology ensures uniform metallurgical fusion between layers, eliminating delamination risk
- Customizable Dimensions: Available in thicknesses from 0.10 mm to 2.50 mm and widths from 5 mm to 300 mm
- Versatile Form Factors: Supplied as continuous strip, coil, precision-cut sheet, or custom stamped parts per your drawings
- Consistent Electrical Properties: Resistivity of 110 μΩ·cm ± 5% ensures stable electrical performance in resistive heating applications
| Parameter | Value |
|---|---|
| Grade | TB 20110 |
| Specific Thermal Deflection (20-130°C) | 20.0 ± 5% × 10⁻⁶/°C |
| Resistivity (20°C) | 110 ± 5% μΩ·cm |
| Elastic Modulus (E) | ≥ 130 GPa |
| Density | 7.8 g/cm³ |
| Linear Temperature Range | -20°C to 200°C |
| Max Operating Temperature | 350°C |
| Hardness (HV) - High Expansion Side | 280 - 350 |
| Thickness Range | 0.10 mm - 2.50 mm |
| Width Range | 5 mm - 300 mm |
| High Expansion Layer | Mn75Ni15Cu10 (Mn-based Alloy) |
| Low Expansion Layer | Ni36Fe (Invar Alloy) |
| Surface Condition | Bright / Polished / Pickled |
| Form Available | Strip, Coil, Sheet, Disc, Custom Stamped Parts |
- Motor overload protection relays
- Thermal circuit breakers (MCB, MCCB)
- Precision thermostats and temperature controllers
- Automotive engine temperature sensors
- Appliance thermal cut-offs (rice cookers, irons, water heaters)
- Industrial process temperature monitoring
- HVAC temperature regulation components
Huona is an ISO 9001:2015 certified manufacturer specializing in high-performance thermostatic bimetal materials. Our TB 20110 strip is produced under strict quality control with full traceability from raw material to finished product. Each batch is tested for thermal deflection, resistivity, and bond integrity. We offer competitive pricing, flexible MOQ starting from 50 kg, and comprehensive technical support including custom stamping and forming services. Contact us today for free samples and a tailored quotation.
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