H68 Brass: Drawn Components and Stock Control

H68 is a designation in the Chinese brass grading system. Material reference.

Drawn Components and Stock Control

For a drawn shell or formed cover, identify the drawing stages and acceptable wall thinning before comparing H68 with H65 or H70. A nominal composition label cannot predict the result of a specific die and starting temper.

Manufacturing and acceptance checks

State the applicable standard, sheet thickness, temper and surface requirement. Agree a forming trial and identify where wall thickness and dimensions will be measured. Request material traceability to the coil or sheet and document any intermediate annealing included in the accepted production route.

Compare related options

• H65 Brass
• H70 Brass

Reference and scope

SAMR: GB/T 5231 wrought copper and alloy designations 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.