Technical requirements Tu 48-19-417-86

1.2 Dispersity of tungsten powders.

Mark	Average grain diameter according to Fischer, microns	After the laboratory milling
W 1,35	1,25 - 1,45	1,20 - 1,36
W 4,0	3,70 - 4,50	3,30 - 3,90
W 6,1	5,70 - 6,70	4,80 - 5,60
W 9,5	8,50 - 10,50	8,00 - 9,50
W 16,5	19,0 - 24,0	16,00 - 19,00

Note. The average particle size after the laboratory grinding is defined at the customer and guaranteed by the manufacturer.
1.3 Chemical composition of tungsten powders

Component name	Mass fraction, %, not more
W, not less	99,9
Percentage of impurities, not more:
iron	0,020
aluminum	0,002
silicon	0,005
calcium	0,01
nickel	0,01
niobium	0,025
sulfur	0,01
molybdenum	0,045
carbon	0,010
potassium	0,010
sodium	0,010
chromium	0,010
copper	0,005
manganese	0,002
magnesium	0,002
tin	0,002

Note

• Tungsten content is determined by the difference between 100% and the sum of the defined impurities in percentage without taking into account oxygen, determined in accordance with the requirement of paragraph 1.4.
• The content of niobium, chromium and manganese is provided technologically and is not subject to control.

1.4 Content of oxygen in tungsten powders.

Grade	Oxygen content in %
W 1,35	0,15
W 4,0	0,08
W 6,1	0,06
W 9,5	0,05
W 16,5	0,04

1.5 Bulk density of powders.

Mark	Bulk density, cm3	After laboratory grinding
W 1,35	1,85 - 2,21	1,65 - 2,01
W4,0	2,95 - 4,17	2,75 - 3,97
W 6,1	3,62 - 4,35	3,42 - 4,15
W 9,5	4,23 - 5,02	4,03 - 4,88
W 16,5	5,69 - 6,91	5,49 - 6,71

1.6 Granulometric composition of tungsten powders.

grade	boundary particle sizes, microns	% by mass	limit particle sizes, microns	% surface
W 1,35	0-1	34-45	<1	25-40
	1-2	39-45	1-3	45-70
	2-3	7-15	3-6	0-10
	3-5	1-8	6-9	0-5
			> 9	The rest
W 4,0	0-1	2-10
	1-2	6-17	<3	15-45
	2-3	16-28
	3-4	16-21	3-6	20-45
	4-5	13-18
	5-6	7-16	6-9	10-25
	6-7	3-10
	7-8	2-6	9-20	10-25
	8-9	≤5
	9-10	≤4	> 20	The rest
	10-25	rest
W 6,1	0-1	1-9
	1-2	1-8	<3	5-25
	2-3	7-14	3-6	20-45
	3-4	11-18
	4-5	12-19	6-9	10-25
	5-6	12-19	9-20	10-25
	6-7	9-15
	7-8	6-11	> 20	The rest
	8-9	3-7
	9-10	≤6
	10-15	≤7
	15-25

Vendor

We offer to buy tungsten metal in powder form from specialized warehouses of the supplier Evek GmbH with delivery to any city. Full compliance with the requirements of TU 48-19-39-85. Supplier Evek GmbH offers to buy tungsten metal in powder form according to Tu 48-19-39-85, the price is optimal in this segment of rolled metal.

Buy, best price

Supplier Evek GmbH offers tungsten metal in the form of powder, price - determined by the technological features of production without the inclusion of additional costs. The company's website displays information on the latest arrivals of products. You can buy tungsten metal in powder form according to TU 48-19-39-85. We have the best price-quality ratio. In the segment of rare and refractory metals, Evek GmbH is a profitable supplier.