Leninskij prosp.53, Moscow 117924, Russia phone : 7-095-132-6817 fax : 7-095-135-0565 e-mail : rmtcom@dol.ru

Beryllium Windows

Specification defines the requirements for a grade of beryllium foil 99.91-99.95 percent minimum beryllium assay produced by hot pressing, etching, cold rolling with further vacuum anneal of distillated beryllium powder.

.
 

Composition  Foil is rolled from material produced by technology described above. Material shell meet the following chemicals limits. Detailed analytical procedures are available by request. . Physical Properties   Boiling Point  2470 oC Density @ 20oC 1.85 g/cm-3  Melting Point  1278 oC Mechanical Properties*   Material Condition  Hard  Tensil Strength 260 MPa Elongation in 50 mm 4-5% * - Properties are referred to 50 um foil

Element ppm Element ppm Be Matrix Fe < 200 O < 500 Co < 3 C <130 Ni < 15 N < 15 Cu < 1 Mg < 1 Zn < 2 Al < 2 Zr < 0.1 Si < 3 Mo < 0.3 Ca < 10 Ag < 0.3 Ti < 1 Sn < 0.8 Cr < 3 Pb < 1 Mn < 3 . .

Availability

Foil to following specification is available in standard thickness raw (in mili inches - mils) 1/2, 1, 2, 3, 4. Special windows with thickness (1/4, 10, 20, 48 mil) are available by special request. Foil is suppllied cut to shapes such as rectangles or disks. Other configurations are available by special request. Foil is supplied either Vacuum Tight or Optically Dense.

By customer demand annealed foil are delivered

Tolerances
 

Thickness, mil	1/2	1	2	3	4	10	12
um	13	25	50	75	100	250	300
Max. aperture without support, mm dia	5	10	15	50	Call	Call	Call
Max. Diemeter, mm	13	30	130	145	145	145	145
Max. Length & Width, mm	10 x 20	25 x 50	110 x 220	110 x 220	140 x 250	140 x 250	140 x 250

Assembling

Assembling of beryllium windows with detector caps is available by special request with vacuum tight and optical dence requirements .

.

.

For more information please contact us :
Leninskij prosp.53, Moscow 117924, Russia
phone : 7-095-132-6817
fax : 7-095-135-0565
e-mail : rmtcom@dol.ru or headbox@rmtltd.msk.ru