Grade selection
303, 304, and 316 serve different machining and corrosion requirements. The drawing or specification should identify the approved grade.
Feature risks
Deep holes, thin walls, small threads, sharp internal corners, and broad cosmetic faces deserve early review.
Finish and inspection
Passivation, polishing, brushing, machined finish, critical dimensions, and visual acceptance should be defined in the RFQ.
RFQ Review Checklist
| Part definition | 3D model, controlled 2D drawing, revision, material grade, surface finish, and quantity. |
|---|---|
| Critical requirements | Datums, tolerances, threads, mating faces, cosmetic surfaces, and inspection expectations. |
| Commercial context | Prototype or batch stage, delivery destination, packaging, assembly use, and preferred contact method. |
Buyer Questions
Is 304 interchangeable with 316?
Not automatically. Corrosion environment, strength, availability, and customer specifications should determine the grade.
What reduces quotation uncertainty?
Provide grade, finish, quantity, tolerances, critical interfaces, and any certificate or inspection requirement.