ASTM Standard Reference
ASTM B386/B386M-25
Molybdenum and Molybdenum Alloy Plate, Sheet, Strip, Foil, and Ribbon
Reference status
Standard at a Glance
Publication Status
Active edition, last updated 13 March 2025.
Material Family
Unalloyed molybdenum, TZM and a specified molybdenum–tungsten alloy.
Product Forms
Plate, sheet, strip, foil and ribbon.
Publisher
ASTM International. The official record and purchased publication are the authoritative sources.
Scope
What This Standard Covers
ASTM B386/B386M-25 is a product specification for wrought flat products made from defined unalloyed molybdenum and molybdenum-alloy material groups.
Its technical requirements address the ordered product form and include composition, mechanical-property and bend-related provisions. The purchased ASTM document must be used for the complete requirements and acceptance limits.
Procurement use
Materials and Product Forms
The official scope identifies material groups by ASTM material number and manufacturing route. MNK-G.S.A verifies the exact requested material and production route before quotation.
- Molybdenum 360 — unalloyed, vacuum arc-cast route;
- Molybdenum 361 — unalloyed, powder-metallurgy route;
- Alloy 363 and Alloy 364 — TZM routes based on nominal Mo; Ti 0.5 %; Zr 0.1 %;
- Molybdenum 365 — low-carbon unalloyed material from a vacuum arc-cast route;
- Alloy 366 — molybdenum alloyed with approximately 30 % tungsten;
- flat product forms include plate, sheet, strip, foil and ribbon.
Inquiry preparation
Ordering and Verification Points
A quotation should be based on the customer’s governing specification and the requirements stated in the inquiry, drawing, purchase order or project documentation. Include:
- the full ASTM designation and required edition;
- the material grade, alloy or manufacturing route stated by the project;
- the required product form, dimensions, tolerances, condition and surface requirements;
- quantity, inspection and test requirements, acceptance criteria and requested inspection documents;
- any supplementary requirements, drawing references, packing instructions and delivery destination.
Cross-reference
Relationship to Other Standards
ASTM B387/B387M addresses bar, rod and wire for related material groups. ASTM B1024/B1024M addresses isotropic pure molybdenum. Product-form coverage and material-number definitions must be checked rather than inferred.
Related designations are not automatically equivalent. Any comparison with EN, ISO, DIN, GOST, TU, manufacturer grades or customer specifications must be checked against the applicable technical documents and certificates. Apply SI and inch-pound requirements separately; do not mix values from the two systems when assessing conformity.
Access
Copyright and Official Publication
MNK-G.S.A does not reproduce the copyrighted ASTM document, protected tables or acceptance limits on this page. The summary is an original procurement reference. Obtain the governing publication from ASTM International.
MNK-G.S.A | Industrial Procurement & Sourcing | mnkmetals.com | sales@mnkmetals.com
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Molybdenum & TZM Materials
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Source Against the Required Standard
Send the designation, grade, product form, dimensions, quantity, inspection-document requirements and delivery destination. MNK-G.S.A will verify the sourcing basis before quotation.
Technical Sources & Revision
Source: ASTM International. ASTM B386/B386M-25
Document / edition: ASTM B386/B386M-25
Source used for: The public ASTM International catalogue record supports the document identity, edition and scope summary on this page. It is used for the stated material or product coverage and the named test or inspection method, where applicable. It does not establish product conformity or replace numerical requirements in the full publication.
Technical source review:
Review scope: the public publisher record and this procurement summary, not a clause-by-clause audit of the full standard. For acceptance, use the governing publication, purchase specification and product or test documentation.