TU 48-19-39-85. Tungsten rods and wire.
Technical Requirements
1.1 Tungsten bars must comply with the requirements of these technical specifications. TU 48-19-39-85.
1.2 Dimensions and limiting deviations shall meet the requirements. specified below.
| Product name | Nominal diameter, mm | Tolerance deviation, mm. | Length, mm, not less |
|---|---|---|---|
| Wire | 1.50 to 1.90 every 0.10 | ± 0,07 | 500 |
| 2,00 to 2,50 every 0,25 | ± 0,10 | 1000 | |
| 2,75 | ± 0,08 | 1000 | |
| Rods | 3,00 | ± 0,08 | 1000 |
| 3,50 | ± 0,08 | 1000 | |
| 4,00 | ± 0,10 | 1000 | |
| 4,50 | ± 0,10 | 500 | |
| 5,00 | ± 0,10 | 500 | |
| 5.50 to 10.0 every 0.50 | ± 0,15 | 500 | |
| 10.5 to 12.0 every 0.50 | ± 0,20 | 200 | |
| 13.0 to 17.0 every 1.0 | ± 0,50 | 200 | |
| 18,0 | ± 1,00 | 200 |
| Component name | Norm, % |
|---|---|
| Content of tungsten, not less | 99,9146 |
| Impurity content not more than 99,9146 | |
| aluminum | 0,003 |
| iron | 0,010 |
| nickel | 0,005 |
| calcium | 0,010 |
| silicon | 0,005 |
| molybdenum | 0,040 |
| carbon | 0,008 |
| Mass fraction of gases. no more than | 0,0045 |
| Component name | Norm, % |
|---|---|
| Mass fraction of tungsten, not less | 99,931 |
| Mass fraction of impurities, not more | |
| aluminum | 0,002 |
| iron | 0,009 |
| silicon | 0,004 |
| nickel | 0,004 |
| calcium | 0,010 |
| molybdenum | 0,040 |
1.6 The presence on the surface of bars and wires burrs, impressions of forging and drawing, not bringing them within the tolerance of deviation in diameter, as well as risks and oxide film is not a rejection feature.
1.7. bars and wires shall not have cracks and splits.
1.8. The bars shall be straight. Deviation from straightness of rods with a diameter of 3,0 mm or more shall not be more than 2,0 mm, taken on any section of the rod length of 200 mm.
| Nominal diameter, mm | Ultimate tensile strength, MPa (kgf/mm2) | Elongation %, %, no less |
|---|---|---|
| 0,4-10 | 3234 (330) | 1,0 |
Supplier
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