Aluminum
6061-T6 and 7075-T6 are examples of specific designations to include when required by a drawing. State the governing specification, documents and substitution policy. A material family name alone does not establish an equivalent substitute.
| Example designation | RFQ information |
|---|---|
| 6061-T6 | Required condition, source standard and documentation |
| 7075-T6 | Required condition, finish, critical features and acceptance criteria |
Stainless steel
When the design specifies SUS304 or SUS316L, retain the exact designation and identify the governing specification. Ask for sourcing to be confirmed; do not assume that a similarly named grade meets the same purchasing requirements.
| Example designation | RFQ information |
|---|---|
| SUS304 | Material designation, condition and permitted substitution policy |
| SUS316L | Material designation, condition, finish and required documentation |
Titanium and engineering materials
For TC4, POM, PEEK, FR-4 or another specified material, provide the full designation and application requirements that need review. The examples do not establish inventory, material properties for your application or acceptance of every geometry.
Finishes and affected surfaces
| Requested treatment example | Information to include |
|---|---|
| Bead blasting | Affected surfaces and appearance requirements |
| Anodizing | Required standard, color, thickness and masking when specified |
| Electroless nickel | Required standard, thickness and treated surfaces |
| Passivation | Material and applicable requirement |
| Powder coating | Color, surface preparation, coating and masking requirements |
| Marking | Content, location and method requiring review |
Confirm that the proposed treatment suits the material and part. State whether dimensional requirements apply before or after treatment. Include inspection and documentation in the same quote scope.
Quote alternatives separately
If an alternative material or finish is acceptable, ask for it to be identified and priced separately. Record the differences in material, finish and acceptance requirements so the base quote remains comparable with your request.
Use the material and finish guide