That 48-19-76-90. Tungsten metal for metallurgical purposes. Specifications.
1. Technical requirements
1.1. Tungsten metal shall conform to the requirements of this specification.
|Product||Side of the cross section or diameter, mm||Length, mm|
|Rods||from 7 to 20||not less than 300|
|Plate||no more 16х80||not less than 300|
|Pieces||no more 35х40||10−150|
- Allowed in party supplies, the presence of pieces of sizes ranging 16x16x150 mm to 5% by weight of the party shtabikov (plates).
- Supply shtabikov side cross-section of more than 20 mm longer than 300 mm
1.3. Chemical composition shtabikov, plates and pieces:
|The name of components||Mass fraction, %, not more|
|Iron and aluminum (in total)||0,3|
Note:the allowed oxygen content of up to 0.025% and hydrogen up to 0.001% in areas located at a distance of not more than 40 mm from the end of the rod billet.
1.4. Chips, reflow, cracks, traces of oxidation on the surface shtabikov, plates and pieces of rejection symptom are not.
1.5. Rods and plates must be welded to a density of not less than 17,4 g/cm3
1.6. The density of the pieces should be not less than 17.0 g/cm3.
|The title in Russian||Tungsten metal for metallurgical purposes|
|Date of the enactment of||01.07.1990|
|The model designation||ТУ48−19−76−81|
|The number of pages||30|
STANDARD THAT 48−19−76−90 INCLUDED under the HEADING CLASSIFIER: KGS \ Metals and metal products \ non-ferrous metals and their alloys. Rental, non-ferrous \ non-ferrous metals, including rare, and their alloys \
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