H14 vs H32 aluminum compares temper designations, not complete material identities. Keep the alloy number beside the temper when ordering. Two quotations labeled only “H14 sheet” and “H32 sheet” leave the buyer without the full material definition.
Read the code first, then review the actual alloy, product form, dimensions and applicable specification. Use the four checks below to preserve those fields through the quotation, purchase order and preparation handoff.
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Read H14 vs H32 aluminum temper codes
The Metals Service Center Institute’s temper lesson distinguishes the processing condition from the degree of hardening. In this system, H1 identifies work hardening only, while H3 identifies work hardening followed by low-temperature stabilization.
The same lesson identifies a final 2 as quarter-hard and a final 4 as half-hard. Read the two positions together; neither position replaces the complete alloy-and-temper description.
| Temper | Meaning in the designation |
|---|---|
| H14 | Strain hardened only; half-hard degree. |
| H32 | Strain hardened and stabilized; quarter-hard degree. |
Do not read “half-hard” as twice the strength of every “quarter-hard” product. Compare the applicable property requirements for the identified material, rather than treating the words as a cross-alloy calculation.
A temper code is not a part approval
The code helps identify the supplied material condition. The project’s released material and component requirements still govern the purchase decision. Have the responsible reviewer assess the supplier’s actual offer against those requirements.
This guide explains labels for purchasing. It does not give a heat-treatment procedure or prescribe a replacement material for a specific structure, service condition or forming operation.
1. Keep the alloy number and temper together
Retain the complete identity from the released drawing or material specification. Include the product form and the applicable requirement on the RFQ. Avoid letting a familiar temper label become the only material description on a quotation line.
When a supplier proposes an alternative, ask for the full replacement identity. Record both the required material and the offered material so the difference is visible to the reviewer.
Check the description across the documents
- Drawing: current material note and revision.
- RFQ: complete identity and documentation scope.
- Quotation: offered identity and stated exceptions.
- Purchase order: approved requirement.
- Receipt: supplied identity and connection to the order.
If two documents disagree, clarify the intended requirement before releasing the affected material. Update the approved documents together rather than leaving the receiving team to choose which description is correct.
The material certificate guide can help organize that connection. Keep the evidence linked to the material it actually identifies.
Separate H tempers from other code families
Do not copy the meaning of an H temper into a T-temper requirement. For the other purchasing discussion, the T5 and T6 guide explains why the complete condition label needs to remain visible.
2. Compare the actual product and specification
Ask for the product form, dimensions, thickness range, material reference and applicable specification covered by the offer. Keep the supplier’s stated limitations beside the information being reviewed.
Atlas Steels’ aluminum plate information identifies H32 as strain hardened by rolling and stabilized to a quarter-hard condition. It also cautions that its displayed stock information does not represent every available combination.
That is a useful reminder to confirm the actual alloy, temper and size combination rather than selecting separate entries from a broad stock list and assuming the combination is available.
Compare like-for-like evidence
If a quote includes property information, retain the property name, unit, product scope and applicable basis. Ask whether the information is typical catalog data, a required limit or an actual result for an identified sample.
Do not let a favorable number approve a different alloy or product form without review. The tensile and yield strength guide helps distinguish two commonly confused report fields, while the actual requirements remain those set by the project.
Preserve the offer’s exclusions
A supplier may quote a different material, finish or documentation scope. List those differences beside the original requirement. Assign each open point to the reviewer who can resolve it before ordering.
A lower price should be compared with its included scope. Do not silently remove inspection, finish or material documentation requirements to make two offers appear identical.
3. Review the next operation before a substitution
Identify the operations planned after stock receipt: cutting, machining, forming, joining or finishing. Provide the released drawing and the relevant requirements to each responsible supplier.
Ask the material and manufacturing teams to review any proposed change in alloy or condition against those operations. A shared visible size does not settle the preparation requirements for a different material identity.
State what the blank must become
Keep the blank dimensions separate from the final component dimensions where the drawing distinguishes them. Identify the required end condition, orientation and delivery stage in the preparation documents.
If forming is involved, retain the drawing’s feature requirements and approved process scope. Request review of a material alternative before the production documents are released. Do not invent a bend radius from a temper label alone.
The bending handoff guide helps organize the geometry and material information needed for that discussion. It does not supply a universal forming limit for every H14 or H32 item.
Keep finishing requirements with the material review
Include the specified finish and appearance requirements when the teams evaluate an alternative. If a reference sample is used, identify what it represents and which approval fields it addresses.
A visually similar piece can be useful for discussion while leaving material identity and other required evidence open. Preserve those separate fields in the review record.
4. Match records to the delivered stock and parts
At receipt, compare the supplied material identity with the approved order. Retain the accompanying records and the agreed lot or item identification. Keep similar-looking stock lines separate when their requirements differ.
A four-field receipt record
- Order line: the approved item and document revision.
- Material identity: supplied alloy, temper and product reference.
- Evidence: the required documentation linked to that item.
- Decision: release, hold or the next clarification required.
If the receipt record shows a mismatch, preserve the supplier’s original documents and request clarification. Avoid relabeling the material as the required condition without the necessary review.
Keep the approved identification scheme through cutting and the next operation. The batch traceability guide addresses how to retain that connection in the preparation records.
RFQ wording to adapt
“Please quote [alloy and complete temper], supplied as [product form and dimensions], to [applicable specification]. Include [required documentation]. Identify alternatives separately for approval before cutting or further processing.”
Replace the bracketed fields with the released project requirements. Add the drawing revision, quantities and delivery-stage inspection scope needed for the actual order.
Buyer questions
Does H14 identify an alloy?
No. It identifies a temper condition. Keep the alloy number and applicable product requirement beside it.
Does half-hard mean twice the strength of quarter-hard?
Do not use that interpretation to compare products. Review the actual property requirements for each identified material.
Can I approve the temper from a photograph?
Use the agreed identity and supporting records. Surface appearance and visible shape do not establish the supplied condition.
Can a supplier substitute H32 for H14?
Have the responsible team review the complete replacement offer against the released requirements. Do not approve it from the temper labels alone.
Discuss the aluminum preparation stage
Contact JiurunCut with the identified stock, drawing, cut lengths, quantities and required end condition. Include the documentation and next-operation scope required for your project.