Thermostatic Bimetallic Strip – MNNI16CU10 (0.22×5mm)

Product Overview

Equivalent International Grades

• China: MNNI16CU10 / 5J20110 (5J11) (GB/T 4461)
• USA: ASTM B388 TM2, Truflex P675R, FPA 7500
• Germany: TB20110
• Russia: ТБ200/113 (ТБ2013)
• UK/France: Telcon 200, Imphy 108SP

Core Specifications

• Alloy Grade: MNNI16CU10 (5J20110 / ASTM TM2)
• Dimensions: 0.22mm (T) × 5mm (W)
  
  
  Thickness tolerance: ±0.005mm
  
  
  Width tolerance: ±0.10mm
• Form: Coil (standard 200m/roll); custom cut lengths available
• Layer Structure: Active layer Mn75Ni15Cu10 + Passive layer Ni36 (no intermediate layer)
• Linear Temperature Range: -20°C ~ +150°C
• Ultimate Service Temperature: -70°C ~ +200°C
• Specific Bending (20~100°C): ≥290×10⁻⁶/°C
• Resistivity (20°C): 1.13±5% μΩ·m
• Density: 7.7 g/cm³
• Tensile Strength: ≥480MPa (soft state)
• Elongation: ≥20%
• Surface Finish: Bright, pickled (standard); polished optional
• Compliance: GB/T 4461, ASTM B388, RoHS, REACH

Key Features

1. High Thermal Sensitivity

   
   

   Delivers large and stable bending displacement under small temperature changes, enabling compact and highly responsive thermal components.
   
   
2. High Electrical Resistivity

   
   

   Suitable for integrated heating elements and self-heating thermal switches, reducing the need for separate resistive parts.
   
   
3. Excellent Structural Stability

   
   

   Vacuum-bonded layers maintain strong adhesion under repeated thermal cycling, resisting delamination and fatigue.
   
   
4. Good Formability & Processability

   
   

   Easily stamped, bent, punched, and welded into miniature and complex shapes for relays, thermostats, and protectors.
   
   
5. Wide Environmental Compatibility

   
   

   Reliable performance in ambient and mildly corrosive conditions; widely used in home appliances, industrial controls, and automotive systems.
   
   

Typical Applications

• Household Appliances: Thermostats for water heaters, refrigerators, air conditioners, electric kettles.
• Industrial Electrical: Overload protectors for small motors, transformers, and power supplies.
• Automotive Electronics: Battery management systems (BMS), thermal switches for HVAC and engine cooling.
• Precision Instruments: Temperature compensation elements for meters, gauges, and sensors.
• Thermal Safety Components: Thermal fuses, cutouts, and current-limiting devices.