Beryllium Copper Strip 0.2mm
Grade Equivalents: UNS C17200 / CuBe2 / Alloy 25 / RWMA Class 4 / EN CW103C
Application Focus: Battery Contact Spring Plates, Electronic Connectors, Micro-Switches, & EMI Shielding Gaskets
Executive Standards: ASTM B194, ASTM B248, SAE J463, ISO 5182
Size Range: Precision Thickness 0.2mm (Tolerance ±0.008mm), Width up to 300mm, Precision Slit Coils
Temper Condition: Annealed (TB00), Cold-Rolled Tempers (H02/H04), or Precipitation Heat-Treated (TF00)
Core Purpose: Balanced Formability and High-Load Spring Deflection at 0.2mm Thickness
Quality Assurance: ISO9001:2015, RoHS Compliant, MTC 3.1 Certified
Description
Beryllium Copper Strip 0.2mm — C17200 Precision Spring Alloy for Electronic Contact Applications
Dongguan Jiaye Dingsheng Precision Casting & Forging Co., Ltd. was established in 1997 and provides Beryllium Copper Strip 0.2mm composed of the standard precipitation hardening alloy C17200 (Alloy 25). After aging, the 0.2 mm thick strip with a tolerance of ±0.008 mm reaches a hardness of 36–42 HRC and a tensile strength of 1130–1320 MPa. It achieves a balance between consistent electrical conductivity and mechanical resilience. It is manufactured using ISO 9001:2015 methods and delivered with EN 10204 3.1 test certificates for worldwide electronics, automotive, and aerospace clients.
What Is Beryllium Copper Strip 0.2mm?
Beryllium Copper Strip 0.2mm is a commonly used thin-gauge material for miniature electronic components. It supports stamping, bending and deep drawing for complex part structures, with stable load capacity beyond brass and phosphor bronze.
Marked as UNS C17200 / CuBe2 / EN CW103C, the alloy contains 1.80–2.00% beryllium and minimum 0.20% Co+Ni. It delivers stable spring retention and fatigue resistance after aging treatment. We provide TB00 annealed, H02/H04 cold-rolled and TF00 heat-treated tempers to match different processing flows.
Technical Specifications
| Parameter | Value |
|---|---|
| Grade / Designation | C17200 / CuBe2 / Alloy 25 / EN CW103C |
| Executive Standard | ASTM B194, ASTM B248, SAE J463, ISO 5182 |
| Beryllium Content | 1.80 – 2.00% |
| Co + Ni (min) | 0.20% |
| Thickness | 0.2mm (Tolerance ±0.008mm) |
| Width | Up to 300mm (Precision Slit Coils available) |
| Thickness Tolerance (Stamping) | ±0.010mm |
| Temper Options | TB00 (Annealed), H02/H04 (Cold-Rolled), TF00 (Aged) |
| Tensile Strength (Aged) | 1130 – 1320 MPa |
| Yield Strength | 950 – 1150 MPa |
| Hardness (Aged) | 36 – 42 HRC / 350 – 420 HV |
| Electrical Conductivity | 22 – 28% IACS |
| Thermal Conductivity | 105 W/m·K |
| Modulus of Elasticity | 128 – 131 GPa |
| Grain Size | 0.015 – 0.030mm (uniform fine grain) |
| Magnetic Permeability | < 1.001 (non-magnetic) |
| Certification | ISO 9001:2015, RoHS, REACH, MTC 3.1 |
Key Product Advantages
Tight Dimensional Tolerance: For high-speed stamping production, laser micrometer inspection ensures uniform thickness over the whole coil width, reducing dimensional rejection rates.
Stable Spring Performance: During repeated deflection, a yield strength of 950–1150 MPa prevents permanent deformation. It adjusts to long-cycle electronic component usage by maintaining more than 90% contact force at 150°C.
Flexible Processing Performance: A variety of bending and forming procedures are supported by annealed and cold-rolled tempers. To satisfy structural usage requirements, post-stamping aging treatment can increase component hardness.
Stable Electrical and Thermal Output: Compact battery contacts and high-frequency connections can benefit from fixed conductivity values, which guaranty low-resistance signal transmission and efficient heat dissipation.
Non-Magnetic & Safe: Spark-resistant qualities suit delicate electronic work situations, and low magnetic permeability prevents signal interference.
Situations for Applications
Tens of millions of cycles in humid circumstances are supported by precision electronics. used for relay parts, micro switches, and battery spring plates.
Automotive Electronics: Despite vibration and temperature changes, ECU terminal connections maintain constant contact pressure over the duration of the vehicle's service life.
Aerospace and Telecommunications: Used to balance structural stiffness and flexibility in coaxial connectors and EMI/RFI shielding gaskets to avoid signal leakage.
Procedure for Quality Control
Each material passes a thorough pre-shipment inspection that includes surface flaw screening, mechanical performance detection, laser dimensional testing, grain size analysis, and OES composition verification. Comprehensive EN 10204 3.1 test reports and batch stability compliance certificates are included with every batch.
Surface Compatibility and Plating
The strip can be coated with gold, silver, nickel, or tin once it has been deoxidized. Its uniform fine grain structure enhances plating adhesion and reduces the possibility of delamination during repeated bending.
Ordering and Customization
We supply standard 0.2mm precision slit coils with multiple tempers. Custom width and property adjustment are available. Stock goods ship in 3–5 days, with 24-hour quotation service and complete customs documents for global delivery.
FAQ
Q1: How does it differ from phosphor bronze?
A1: Higher fatigue strength and tensile strength, performing stably in long-cycle and high-temperature electronic contact scenarios.
Q2: What is the recommended post-processing heat treatment?
A2: Aging at 315–325°C for 2–3 hours achieves peak hardness. Pre-aged TF00 material is available for simplified production.
Q3: Is plating available after stamping?
A3: Yes. It matches common electronic plating materials; surface deoxidation is required before processing.
Q4: How is its high-temperature stability?
A4: It retains over 90% initial contact force at 150°C, more stable than ordinary brass and bronze materials.
Q5: Is solid beryllium copper strip safe to handle?
A5: Solid parts are safe for daily processing. Only dust from grinding and welding needs ventilation protection.
Contact Us
Send your detailed specifications and procurement demands to js01@jstongcai.com.cn. Our team will provide professional technical evaluation and formal quotes within 24 hours, supplying qualified Beryllium Copper Strip 0.2mm for your electronic manufacturing projects.
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