Name the material precisely
Brass, carbon steel, stainless steel and aluminum are useful material families, but a family name does not define a grade. Supply the required specification or ask for a project-specific material discussion.
Describe the environment
Include temperature, moisture, chemicals and contact with other metals. Explain whether cosmetic appearance, corrosion behavior, weight or electrical properties matter.
Coordinate finish with dimensions
A finish can affect dimensions, thread fit and the installation interface. Put the finish requirement and any post-finish inspection expectations on the drawing.
State restricted-substance requirements
When lead content, RoHS, REACH or another material requirement matters, identify the applicable specification and documentation needed. Compliance is established for the supplied material and finish, rather than inferred from color or a generic material label.
Ask for the evidence you need
Discuss material certification, coating verification or other required documents during RFQ review. Define the traceability and inspection scope before production.