C102 Copper: Oxygen-Free Stock Selection

C10200 is the UNS designation for oxygen-free copper. Confirm that this is what a supplier means by C102. Material reference.

Oxygen-Free Stock Selection

For a conductive component, compare the required oxygen control and conductivity with C10100 rather than treating every oxygen-free product as identical. The actual joining or vacuum requirement should determine the extra controls, not a general purity claim.

Manufacturing and acceptance checks

Put the complete UNS and product specification on the enquiry. State temper, dimensions, required conductivity and the final joining process. Request traceability and define cleaning and burr control for contact features; do not transfer values from an annealed sample to unspecified hard-drawn stock.

Compare related options

• C101 Copper
• C110 Copper

Reference and scope

Copper Development Association: UNS copper identities provides material or specification background. The checks above are purchasing guidance; final acceptance values must come from the agreed grade, product specification and condition.

Send a drawing and material requirements for review. Include quantity, critical dimensions and the inspection evidence required with delivery.