MATERIAL COMPARISON
The same alloy number does not erase the temper requirement
H116 and H321 identify different supply tempers of 5083. For procurement, compare the complete product description and acceptance basis. Matching headline strength figures alone do not establish that one temper may replace the other.
Differences to verify
| Criterion | 5083-H116 | 5083-H321 |
|---|---|---|
| Specified alloy and temper | 5083-H116 | 5083-H321 |
| Brochure proof stress, MPa, minimum | ≥215 MPa | ≥215 MPa |
| Brochure tensile strength, MPa, minimum | ≥305 MPa | ≥305 MPa |
These are the brochure’s published minimum figures for its listed marine plate, not typical values, certified batch results or limits for every thickness and supplier. The brochure does not give a complete tensile-test basis here; obtain the applicable product specification and test evidence before engineering use.
Hulamin - Marine 5083 brochure (Undated brochure; PDF page 2; checked 2026-10-13, p. 2, Mechanical properties) | ASTM B209/B209M-21a
What should drive the choice?
Required temper
Retain H116 or H321 exactly as required by the drawing or purchase specification. If an alternative is offered, list the deviation explicitly for technical review.
Thickness and evidence
Check the offered thickness and the scope of the supporting evidence together. Do not apply this brochure example to a different product range or treat it as an inspection certificate.
Marine acceptance
ASTM B209/B209M-21a, public scope Note 3, directs the relevant high-magnesium H116/H321 marine products to B928/B928M and its additional corrosion requirements. Agree the applicable standard edition and acceptance basis for the project.
Limits of substitution
Neither a shared alloy number nor equal brochure strength figures establishes unconditional equivalence. Do not replace H116 with H321, omit the temper or change plate thickness without the responsible technical approval. Supplier listings do not prove MNK stock availability or certification of an offered batch.
Technical Sources & Revision
Sources: Hulamin Marine 5083 brochure, PDF page 2, publication date not stated; ASTM B209/B209M-21a public scope, Note 3. The ASTM reference is explicitly the cited edition, not a claim that it is the latest edition. No protected standard table is reproduced.
Materials and next steps
Technical review: 14 September 2026. Original purchasing guidance by MNK-G.S.A. Public references do not imply a supplier partnership.