Looking for solder training standards, manuals, kits, and more?

Ask Helena & Leo

Copper Elongation and Tensile Strength Requirements

  Question: IPC-TM-650, 2.4.18.1 is the method for testing in-house plating for tensile strength and elongation, but where can I find the IPC requirements for results? For example, military standard MIL-PRF-31032 states copper elongation shall...

 

Question: IPC-TM-650, 2.4.18.1 is the method for testing in-house plating for tensile strength and elongation, but where can I find the IPC requirements for results? For example, military standard MIL-PRF-31032 states copper elongation shall be 12% minimum, and tensile strength shall be 248 MPa minimum. What are the minimums per IPC?

Answer: I cannot find any reference to tensile strength or elongation in the Mil-PRF-31032 B document. The place to find that information in IPC documents is in IPC-4101, Specification for Base Materials and Rigid and Multilayer Printed Boards. You must know the type of laminate you are using and select the appropriate specification sheet number.

Have a question about training or IPC certification?

EPTAC has the knowledge and expertise to help you train your staff, understand your process, and increase production. We are committed to answering your questions promptly, and we look forward to hearing from you.