The Telcon 140/5J1480/TM-1 bimetal strip is a high-precision thermal response material featuring a specialized two-layer composite structure with fixed specifications of 0.20mm (thickness) ×14mm (width). Composed of a high-expansion active layer (Ni22Cr3 alloy) and a low-expansion passive layer (Ni36 invar alloy), it delivers:

• Sensitive temperature-induced bending deformation
• Stable mechanical properties
• Wide temperature adaptation range (-70℃ to 350℃)

With its bright surface finish and excellent dimensional accuracy, this strip is widely used in automatic control devices and instrumentation for temperature control, compensation, and indication functions.

• Product Model: "Telcon 140" (equivalent to Kanthal 135, FPA 223-80); "5J1480" (Chinese standard); "TM-1" (ASTM TM1 compliant)
• Specifications: 0.20mm ×14mm (thickness tolerance ±0.005mm, width tolerance ±0.1mm)
• Equivalent Grades: Kanthal 135, Neomax BL-5, Imphy R80; complies with ASTM TM1 and GB/T 4461-2004
• Manufacturing Process: Vacuum smelting → hot rolling → multi-pass cold rolling → precision annealing → surface polishing

• Bending coefficient K of 14.3×10⁻⁶/℃ (20-135℃) and temperature bending rate F of 26.2%±5%
• 100mm-long strip bends ≥1.4mm when heated from 20℃ to 120℃
• Temperature range: -70℃ to 350℃ with ≤3% bending coefficient decay after 1000 hours at 300℃

• Interfacial shear strength ≥150MPa with no delamination after 500 thermal shock cycles
• Vickers hardness HV 180-220 and elongation ≥8% at 25℃
• Can be bent 180° around 1mm mandrel without cracking

• Thickness tolerance ±0.005mm, width tolerance ±0.1mm, flatness ≤0.1mm/m
• Surface roughness Ra ≤0.2μm for excellent process compatibility
• Electrical resistivity 0.8±5% Ω*mm²/m at 20℃

• Household & Commercial Thermostats: Air conditioners, water heaters, ovens (accuracy ≤±1℃)
• Industrial Protection Devices: Motor over-temperature relays, transformer switches
• Automotive & Aerospace: Exhaust thermometers, cabin temperature indicators
• Precision Instruments: Temperature compensation in meters and gauges

Huona implements a strict three-stage quality control system:

• Raw material inspection (XRF spectral analysis, vacuum degree ≤1×10⁻³Pa)
• Process testing (ultrasonic flaw detection, precision temperature calibration)
• Final inspection (laser thickness gauge, surface roughness testing)

Free samples (1m length) and material test reports available upon request. Custom technical support includes annealing process adjustments and stamping parameter guidance.