TECHNICAL LIBRARY · ASTM PROCUREMENT REFERENCE
ASTM F204-76(2025) — Tungsten Seal Wire Surface Flaws
Procurement reference for detecting surface flaws in tungsten seal rod, wire and electronic-device lead sections.
Edition control: Active; ASTM F204-76 reapproved in 2025. This original MNK-G.S.A summary does not reproduce or replace the protected ASTM publication. Confirm the current authorised edition and governing order documents before use.
Scope in Procurement
ASTM F204-76(2025) provides a test route for detecting surface flaws in tungsten seal rod and wire supplied in random or cut lengths.
The method also addresses the tungsten portion of multi-piece through-leads used in electronic devices and evaluates the prepared item through a glass-bead sealing examination.
This is a specialized flaw-detection method, not a general surface specification for every tungsten wire, rod, electrode or machined component.
| Subject | Surface flaws |
| Product context | Tungsten seal rod, wire and tungsten sections of through-leads |
| Application context | Electronic-device sealing components |
| Scope boundary | Not a universal tungsten surface-inspection route |
Where This Standard Fits
- Tungsten seal-wire and seal-rod inquiries
- Electronic-device through-lead inspection
- Defining a specialized surface-flaw test before production
- Separating seal-component requirements from general tungsten wire supply
Ordering and Document Controls
- Exact ASTM edition and product form
- Material designation and sealing application
- Random or cut length and dimensional requirements
- Specimen preparation and sealing procedure
- Examination, result classification and retest route
- Batch identity, report and traceability
Related MNK Technical Pages
Official Publication and Access Policy
Official record: ASTM F204-76(2025) at ASTM International. Obtain authorised content through the publisher or an authorised standards distributor. Protected clauses, tables, figures and acceptance values are not reproduced here.
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Send the required material, grade, product form, drawing, dimensions, quantity, governing standard, inspection route and delivery destination. MNK-G.S.A will review the specification and coordinate a sourcing response.
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