Tensile strength and elongation at break test of nickel plated copper foil

In the modern electronics industry,Nickel plated copper foilDue to its excellent conductivity and corrosion resistance, it is widely used in the manufacturing of printed circuit boards (PCBs). Tensile strength and elongation at break are key indicators for measuring the performance of nickel plated copper foil. This article aims to explore the testing methods for tensile strength and elongation at break of nickel plated copper foil to ensure that the material meets industry standards and application requirements.

The importance of nickel plated copper foil

Nickel plated copper foil is an important material for the manufacturing of copper-clad laminates (CCL) and printed circuit boards (PCB). With the rapid development of the electronic information industry, copper foil is known as the "neural network" for electronic product signal and power transmission. Therefore, exploring the testing methods for the physical properties of copper foil is crucial for improving hardware and software design.

Testing standards and methods

The main standards involved in the physical performance testing of nickel plated copper foil include IPC-TM-6502.4.18A, ASTM E345-2016, GB/T5230-1995, GB/T5187-2008, and GB/T228.1. These standards provide the basic framework and methods for testing.

1. Sample preparation

• The sample should be in the form of a strip or a head, with 5 samples in both the horizontal and vertical directions.
• Strip sample size: 13mm × 150mm.
• The size of the leading sample should comply with the ASTM E345A sample specification.

2. Test parameters

• Copper foil thickness range: 0.05mm~0.1mm.
• The gauge length is 50mm.
• Collet movement rate: 0.05mm/mm~0.5mm/mm (strain rate) per minute.

3. Baking treatment

• After cutting, the sample needs to be baked at 125 ± 5 ℃ for 4-6 hours.

4. Failure determination

• The sample has obvious defects leading to fracture.
• The result deviates from the average.

Detailed explanation of the testing process

1. Sample preparation

• Ensuring accurate sample size is crucial for obtaining accurate test results.
• For the leading sample, it should be prepared strictly according to the sample A specification in ASTM E345.

2. Test equipment settings

• Use a universal material testing machine for testing to ensure accurate equipment calibration.
• Set the clamp spacing and movement speed to meet the testing standard requirements.

3. Test execution

• Conduct tensile testing under set conditions and record tensile strength and elongation at break data.
• Observe the behavior of the sample during the stretching process, paying attention to the fracture location and the ductility of the sample.

4. Data analysis

• Perform statistical analysis on the test data, calculate the mean and standard deviation.
• Evaluate whether the performance of nickel plated copper foil meets expectations based on the test results.

Result determination and application

The test results should be compared with industry standards to ensureNickel plated copper foilThe performance meets the application requirements. If the test results deviate from expectations, adjustments need to be made to the production process to improve product quality.

conclusion

The tensile strength and elongation at break tests of nickel plated copper foil are crucial for ensuring the reliability of electronic products. By following strict testing standards and methods, the performance of materials can be ensured to meet design requirements, thereby improving the quality of the final product. With the development of technology and the emergence of new materials, continuous optimization of testing methods and equipment is crucial for maintaining industry competitiveness.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.