TU 48-19-106-91. Strips of tungsten unannealed. Technical conditions.
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Scope of application TU 48−19−221−83
This standard regulates the general requirements for the production of tungsten unbaked strips. Finished products must meet mechanical requirements, including tensile strength, yield strength, elongation, etc. Chemical analysis, tensile tests and hardness tests must be carried out in accordance with relevant standards.
Bibliography
| Type of standard | Standards for products (services) |
| Date of implementation | 01/01/1984 year |
| Approved by | Interstate Council for Standardization, Metrology and Certification |
| Original language | Russian |
| Title in English | Strips of tungsten unannealed. Technical specifications |
Percent composition
| Component name | Mass fraction |
|---|---|
| Tungsten | 99.931 min |
| nickel | ≤0.004 |
| aluminum | ≤0,002 |
| iron | ≤0.009 |
| silicon | ≤0.004 |
| calcium | ≤0.010 |
| molybdenum | ≤0,040 |
The edges of the bands should be cut off. Burrs formed on the edges after trimming are not a marriage. On the edges of strips with a thickness of 1.4 — 3 mm, face cracks of up to 1 mm depth, which are formed during cutting, are allowed.
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