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The P675R bimetallic strip (0.16mm×27mm), a precision-engineered functional material from Huona New Material, is a specialized composite strip composed of two dissimilar alloys with distinct thermal expansion coefficients—firmly bonded via our proprietary hot-rolling and diffusion bonding technology. With a fixed thin gauge of 0.16mm and standard width of 27mm, this strip is optimized for miniaturized temperature-sensitive applications, where precise thermal actuation, stable dimensionality, and space-saving design are critical. Leveraging Huona’s expertise in bimetallic composite processing, the P675R grade delivers consistent temperature-driven deformation performance, outperforming generic bimetallic strips in micro-device compatibility and long-term fatigue resistance—making it ideal for compact thermostats, overheat protectors, and precision temperature compensation components.
The P675R strip (0.16mm×27mm) stands out for its thin-gauge-specific performance and fixed-width convenience:
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.
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.
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.
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.
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
Attribute
Value (Typical)
Thickness
0.16mm (tolerance: ±0.005mm)
Width
27mm (tolerance: ±0.1mm)
Length per Roll
100m - 300m (cut-to-length available: ≥50mm)
Thermal Expansion Coefficient Ratio (High/Low Layer)
~13.6:1
Operating Temperature Range
-70℃ to 350℃
Rated Actuation Temperature Range
60℃ - 150℃ (customizable via alloy ratio adjustment)
Mill finish (oxide-free) or passivated finish (for corrosion resistance)
Flatness
≤0.08mm/m (critical for micro-stamping accuracy)
Bonding Quality
100% interfacial bonding (no voids >0.05mm², verified via X-ray inspection)
Solderability
Optional tin-plating (thickness: 3-5μm) for enhanced solderability with Sn-Pb/lead-free solders
Packaging
Vacuum-sealed in anti-oxidation aluminum foil bags with desiccants; plastic spools (150mm diameter) to prevent strip deformation
Customization
Adjustment of actuation temperature (30℃ - 200℃), surface coating (e.g., nickel-plating), or pre-stamped shapes (per customer CAD files)
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).
Huona New Material subjects every batch of P675R bimetallic strips (0.16mm×27mm) to rigorous quality testing: interfacial bonding shear tests, 1000-cycle thermal stability tests, dimensional inspection via laser micrometry, and actuation temperature calibration. Free samples (50mm×27mm) and detailed performance reports (including 温曲率 vs. temperature curves) are available upon request. Our technical team provides tailored support—such as alloy layer optimization for specific actuation temperatures and micro-stamping process guidelines—to ensure the strip meets the exact needs of compact, precision-driven applications.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2008
Total Annual:
8000000-100000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig... Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig...
