Product Description

P675R Bimetallic Strip (0.16mm Thickness × 27mm Width)

Product Overview

Standard Designations & Core Composition

• Product Grade: P675R
• Dimensional Specification: 0.16mm thickness (tolerance: ±0.005mm) × 27mm width (tolerance: ±0.1mm)
• Composite Structure: Typically features a “high-expansion layer”and a “low-expansion layer”, with interfacial shear strength ≥160 MPa
• Compliant Standards: Adheres to GB/T 14985-2017 (Chinese standard for bimetallic strips) and IEC 60694 for thermal control components
• Manufacturer: Tankii Alloy Material, certified to ISO 9001 and ISO 14001, with in-house thin-gauge composite rolling and precision slitting capabilities

Key Advantages (vs. Generic Thin-Gauge Bimetallic Strips)

1. Ultra-Thin Stability: Maintains uniform thickness (0.16mm) and no interfacial delamination—even after 5000 thermal cycles (-40℃ to 180℃)—solving the common issue of thin-gauge bimetallic strips (≤0.2mm) being prone to warping or layer separation.
2. Precise Thermal Actuation: Controlled 温曲率 (temperature-induced curvature) of 9-11 m⁻¹ (at 100℃ vs. 25℃), with actuation temperature deviation ≤±1.5℃—critical for compact devices (e.g., micro-battery overheat protectors) where temperature thresholds are narrow.
3. Fixed Width for Automated Production: 27mm standard width matches common micro-stamping die sizes, eliminating the need for secondary slitting and reducing material waste by ≥15% compared to custom-width strips.
4. Good Machinability: Thin 0.16mm gauge enables easy bending (minimum bending radius ≥2× thickness) and laser cutting into micro-shapes (e.g., tiny thermostat contacts) without cracking—compatible with high-speed automated assembly lines.
5. Corrosion Resistance: Optional surface passivation treatment provides 72-hour salt spray resistance (ASTM B117) with no red rust, suitable for humid environments (e.g., wearable device temperature sensors).

Technical Specifications

Product Specifications

Typical Applications

• Compact Temperature Controls: Micro-thermostats for wearable devices (e.g., smart watches), small household appliances (e.g., mini rice cookers), and medical devices (e.g., insulin coolers).
• Overheat Protection: Miniature circuit breakers for lithium-ion batteries (e.g., power banks, wireless earbud batteries) and micro-motors (e.g., drone motors).
• Precision Compensation: Temperature-compensating shims for MEMS sensors (e.g., pressure sensors in smartphones) to offset thermal expansion-induced measurement errors.
• Consumer Electronics: Thermal actuators for laptop keyboard backlight controls and printer fuser temperature regulators.
• Industrial Micro-Devices: Tiny thermal switches for IoT sensors (e.g., smart home temperature/humidity sensors) and automotive micro-components (e.g., fuel system temperature monitors).