Tu 48-19-320-91. Tungsten rods for electrodes of xenon lamps. Technical specifications.

Specifications Tu 48-19-320-91

1.1 Tungsten rod for xenon lamp electrodes shall meet the requirements of these technical specifications.
1.2 Rods must be combined, i.e. have a central part of coarse-crystalline tungsten of BT-50 or BT-15 grade and a coating of pure tungsten.
1.2.1 Chemical composition of the central part of the rod of BT15 and BT50 grades must comply with TU 48-19-59-87.
1.3 The dimensions of the products and limit deviations shall comply with the following requirements.

Outer diameter Standard deviation, mm Length of the central part Deviation Limit, mm. Length, mm, not less
10,25 ±0,25 6,0 ±1,0 200
10,5 ±0,25 6,0 ±1,0 --- "---
12,5 ±0,3 6,0 ±1,0 200
14,0 ±0,25 6,0 ±1,0 --- "---
15,0 ±0,25 6,0 ±1,0 200
Note:
  • In each batch, up to 20% of bars with a length of more than 60% of the nominal length are allowed.
  • Decrease of outer diameter up to 9,75, 10,0, 12,0 and 13,5, 14,5 mm respectively, on the ends of the rods at a distance of not more than 30 mm from the ends is not a defective feature.
1.4 The presence on the surface of the products of oxide film, traces of forging, burrs and risks within the allowable deviations specified in Table 1, is not a rejecting feature.
1.5 The bars shall be straight. Deviation from straightness shall not exceed 1% of the measured length of the rod.
1.6 The degree of compression of the central part of the rod shall not be less than 60%.
1.7 The density of the bars shall be not less than 18,2 g/cm3.

Supplier

We offer to buy tungsten electrode from specialized warehouses of the supplier Evek GmbH with delivery in any city. Full compliance with the requirements of Tu 48-19-320-91. Supplier Evek GmbH offers to buy tungsten electrode, the price is optimal in this segment of rolled metal products.

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