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Thermostatic Bimetallic Strip – Grade 5J1580 (0.25mm × 15mm Multi-Coil Pack)

China Thermostatic Bimetallic Strip – Grade 5J1580 (0.25mm × 15mm Multi-Coil Pack)

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Thermostatic Bimetallic Strip – Grade 5J1580 (0.25mm × 15mm Multi-Coil Pack)

MOQ： 10KG
Price： Negotiable
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Payment Terms	L/C,T/T,Western Union
Supply Ability	500 tons per month
Delivery Time	5-21 days
Packaging Details	Carton/Wooden case
Alloy Grade	5J1580
Density	8.05 g/cm³
Elongation	≥17%
Tensile Strength	≥530MPa
Electrical Resistivity (20℃)	0.82 μΩ·m
Ultimate Service Temperature	-70℃ ~ +220℃
Operating Temperature Range	30℃ ~ +180℃ (continuous)
Specific Bending (20–100℃)	220×10⁻⁶/℃
Brand Name	Huona
Model Number	5J1580
Certification	ISO9001
Place of Origin	Shanghai

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Product Details
Company Details

Product Specification


Payment Terms	L/C,T/T,Western Union	Supply Ability	500 tons per month
Delivery Time	5-21 days	Packaging Details	Carton/Wooden case
Alloy Grade	5J1580	Density	8.05 g/cm³
Elongation	≥17%	Tensile Strength	≥530MPa
Electrical Resistivity (20℃)	0.82 μΩ·m	Ultimate Service Temperature	-70℃ ~ +220℃
Operating Temperature Range	30℃ ~ +180℃ (continuous)	Specific Bending (20–100℃)	220×10⁻⁶/℃
Brand Name	Huona	Model Number	5J1580
Certification	ISO9001	Place of Origin	Shanghai
High Light	thermostatic bimetallic strip 0.25mm ，grade 5J1580 multi-coil pack ，bimetallic strip thermostat 15mm

Thermostatic Bimetallic Strip – Grade 5J1580 (0.25mm × 15mm Multi-Coil Pack)

Product Overview

This multi-coil pack of 5J1580 thermostatic bimetallic strip (0.25mm thickness × 15mm width) is a high-performance, mid-sensitivity thermal composite material designed for medium-load industrial and consumer temperature control applications. It is manufactured by vacuum metallurgical bonding of a manganese-nickel-chromium high-expansion layer and a controlled low-expansion nickel-iron alloy, followed by precision rolling and multi-stage stress-relief annealing. The material delivers balanced thermal response, excellent mechanical strength, and stable fatigue resistance, making it ideal for high-cycle thermal switches, safety cutouts, and precision compensation elements.

Core Specifications & Designations

Alloy Grade: 5J1580 (mid-sensitivity, balanced-resistance thermostatic bimetal)
Equivalent International Grades:
- USA: ASTM TM-5 / FPA 1580
- Germany: TB1580
- Japan: TMB-5
- Russia: ТБ1580
Dimensions:
- Thickness: 0.25mm (tolerance ±0.006mm)
- Width: 15mm (tolerance ±0.10mm)
- Form: Multi-coil pack (standard 6 coils, 100m/coil; custom coil counts/lengths available)
Key Thermal & Electrical Properties:
- Specific Bending (20–100℃): ~220×10⁻⁶/℃
- Linear Temperature Range: -30℃ ~ +180℃
- Ultimate Service Temperature: -70℃ ~ +220℃
- Electrical Resistivity (20℃): 0.82 μΩ·m
Compliant Standards: GB/T 4461-2016, ASTM B388, RoHS 2.0, REACH
Manufacturer: Huona (Shanghai) New Material Co., Ltd., ISO 9001 & IATF 16949 certified

Key Differentiating Advantages

1. Balanced Thermal Sensitivity for High-Cycle Use

With a specific bending coefficient of ~220×10⁻⁶/℃, this grade strikes an optimal balance between thermal response and mechanical robustness. It provides reliable, repeatable bending displacement even after tens of thousands of thermal cycles, making it ideal for continuous-duty thermal switches and motor protectors.

2. Enhanced Mechanical Strength & Formability

The material exhibits a tensile strength ≥530MPa and elongation ≥17%, enabling complex stamping, deep bending, and precision punching into multi-functional thermal elements. Its uniform grain structure minimizes cracking during forming, supporting high-volume production of intricate components.

3. Optimized Electrical Resistivity for Hybrid Applications

With a resistivity of 0.82 μΩ·m, 5J1580 is engineered for use in both temperature-sensing and self-heating thermal control devices. It supports moderate self-heating currents without excessive voltage drop, simplifying the design of integrated thermal safety components.

4. Multi-Coil Pack for Industrial Scale Production

This multi-coil configuration (6 coils per pack) is tailored for large-scale manufacturing operations, ensuring consistent material properties across production runs. Each coil is individually marked and packaged to prevent cross-contamination, streamlining inventory management and traceability.

5. Superior Thermal Fatigue & Environmental Stability

The material maintains stable performance across its full temperature range, with no permanent deformation or delamination after repeated thermal cycling. It also offers good resistance to atmospheric corrosion and mild industrial chemicals, making it suitable for use in HVAC systems, automotive electronics, and general industrial environments.

Technical Specifications Table

Attribute	Value (Typical)
Alloy Grade	5J1580 (ASTM TM-5 / TB1580)
Thickness	0.25mm (±0.006mm)
Width	15mm (±0.10mm)
Form	Multi-coil pack (6 × 100m coils)
Specific Bending (20–100℃)	~220×10⁻⁶/℃
Operating Temperature Range	-30℃ ~ +180℃ (continuous)
Ultimate Service Temperature	-70℃ ~ +220℃
Electrical Resistivity (20℃)	0.82 μΩ·m
Tensile Strength	≥530MPa
Elongation	≥17%
Density	~8.05 g/cm³
Surface Finish	Bright pickled (standard)

Supply & Packaging Specifications

Item	Specification
Supply Form	Multi-coil pack (6 × 100m coils); custom coil counts available
Standard Dimensions	0.25mm (T) × 15mm (W)
Surface Treatment	Bright pickled; electro-polished (optional)
Packaging	Anti-oxidation paper + plastic film + wooden pallet (individual coil marking included)
MOQ	1 pack (6 coils); small batches available for R&D
Customization	Thickness (0.1–2.0mm), width (5–30mm), coil length, surface finish
Processability	Stamping, bending, punching, resistance welding, laser cutting

Typical Application Scenarios

HVAC & Appliance Controls: Thermostats for air conditioners, water heaters, and refrigeration systems.
Motor & Power Protection: Overload protectors for small motors, transformers, and power adapters.
Automotive Electronics: Thermal switches for battery management systems (BMS) and engine cooling systems.
Precision Instrumentation: Temperature compensation elements for meters, gauges, and sensor modules.
Industrial Safety Components: Thermal cutouts and regulators for process equipment and power distribution systems.

Company Details

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Business Type:

Manufacturer,Exporter 
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Year Established:

2008 
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Total Annual:

8000000-100000000
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Employee Number:

100~120 
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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...

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