Alloy, Temper & Product Standard
Keep material identity, condition and acceptance requirements together when requesting aluminum.
Three different questions
- Alloy designation
- Which material composition designation is required, and under which designation system? A marketing name does not answer this.
- Temper designation
- Which material condition is required? The alloy name alone does not identify it.
- Product specification
- Which document governs this product form, its relevant dimensions, properties and acceptance requirements? Record the standard identifier and edition.
Write the offer boundary clearly
The Aluminum Association identifies ANSI H35.1/H35.1M with alloy and temper designation systems, and H35.2/H35.2M with dimensional tolerances for mill products. These have different jobs; naming a designation reference alone does not complete the finished-product requirement.
- Drawing revision
- State the drawing number, revision, units and critical dimensions.
- Standard edition
- State the selected specification and edition. Obtain the applicable document; this page does not claim to reproduce its requirements.
- Acceptance plan
- Identify required checks, sampling, documents and who accepts the delivered lot.
- Alternatives
- Require the supplier to list departures and proposed substitutions in writing for approval by the design owner.
Example request structure
Use named fields rather than an ambiguous shorthand:
- Material
- Required alloy and designation system: [to be specified by buyer].
- Condition
- Required temper: [to be specified].
- Product
- Form, dimensions, drawing revision and quantity: [to be specified].
- Acceptance
- Product standard and edition, inspection scope and traceable documents: [to be specified].
This is an editable planning structure, not a complete engineering specification.
Source and next step
Source: The Aluminum Association — Standards. Reviewed 2 October 2026. No universal tolerance, cross-system equivalence or material substitution is asserted.