X-Ray - Pure Beryllium Products
Beryllium of PS-200 specification shall contain a minimum beryllium content of 98.5% and conform to the following maximum chemical limits:
| Beryllium Assay: | 98.5% Minimum |
| Maximum | |
| Beryllium Oxide | 1.5 |
| Aluminum | 0.10 |
| Carbon | 0.15 |
| Iron | 0.13 |
| Magnesium | 0.08 |
| Silicon | 0.06 |
Foil and sheet manufactured to PS-200 specification is available as flat stock in standard thickness range 0.005 – 0.250 inches (127 – 6350 μm). PS-200 is supplied cut to shapes such as rectangles, discs, and other configurations.
The material is available in three integrity grades classified as vacuum tight,
optically-dense, and as-rolled in the following thickness ranges:
| Vacuum-Tight | 0.005 – 0.250 inches (127 – 6350 μm) |
| Optically-Dense | 0.005 – 0.250 inches (127 – 6350 μm) |
| As-Rolled | 0.005 – 0.250 inches (127 – 6350 μm) |
Beryllium of PF-60 specification shall contain a minimum beryllium content of 99.0% and conform to the following maximum chemical limits:
| Beryllium Assay: | 99.0% Minimum | ||
| % Maximum | % Maximum | ||
| Beryllium Oxide | 0.8 | Lead | 0.002 |
| Aluminum | 0.05 | Lithium | 0.0003 |
| Boron | 0.0003 | Magnesium | 0.049 |
| Cadmium | 0.0002 | Manganese | 0.010 |
| Calcium | 0.01 | Molybdenum | 0.002 |
|
Carbon |
0.06 | Nickel | 0.02 |
| Chromium | 0.01 | Nitrogen | 0.03 |
| Cobalt | 0.001 | Silicon | 0.04 |
| Copper | 0.010 | Silver | 0.001 |
| Iron | 0.08 |
Foil and sheet manufactured to PF-60 specification is available as flat stock in standard thickness range 0.0003 – 0.125 inches (7.6 – 3175 μm). PF - 60 is supplied cut to shapes such as rectangles, discs and other configurations.
The material is available in three integrity grades classified as vacuum-tight, optically dense, and as-rolled in the following thickness ranges:
| Vacuum-Tight | 0.0005 – 0.125 inches (12.7 – 3175 μm) |
| Optically-Dense | 0.0003 – 0.125 inches (7.6 – 3175 μm) |
| As-Rolled | 0.0003 – 0.125 inches (7.6 – 3175 μm) |
Vacuum cast beryllium ingots of IF-1 specification contain a minimum beryllium content of 99.8% and conform to the following maximum chemical limits
| Beryllium Assay: | 99.8% Minimum | ||
| % Maximum | % Maximum | ||
| Beryllum Oxide | 0.06 | Lead | 0.0005 |
| Iron | 0.03 | Manganese | 0.003 |
| Aluminum | 0.01 | Molybdenum | 0.001 |
| Magnesium | 0.006 | Nickel | 0.02 |
| Silicon | 0.01 | Calcium | 0.02 |
| Carbon | 0.03 | Zinc | 0.01 |
| Chromium | 0.0035 | Silver | 0.0005 |
| Cobalt | 0.0005 | Titanium | 0.001 |
| Copper | 0.005 |
Foil manufactured to IF-1 specification is available as flat stock in standard thickness range of 0.0001 – 0.010 inches (2.5 – 254 μm). Foil is supplied cut to shapes such as rectangles, discs and other configurations.
The material is available in three integrity grades classified as vacuum-tight, optically-dense, and as-rolled in the following thickness ranges:
| Vacuum-Tight | 0 .0003 – 0.010 inches (7.6 – 254 μm) |
| Optically-Dense | 0.0002 – 0.010 inches (5.1 – 254 μm) |
| As-Rolled | 0.0001 – 0.010 inches (2.5 – 254 μm) |
The scope of this specification is to define the characteristics of X-Ray Window assemblies using IS-50M material, designed specifically for mammography applications that are required to be radiographically artifact free at X-Ray energy levels down to 15 KeV. IS-50M material is made from high purity cast ingot and can be joined to a variety of customer-specified frame materials.
The vacuum cast beryllium ingots used to make IS-50M specification material shall contain a minimum beryllium content of 99.0% and conform to the following maximum chemical limits:
| Beryllium Assay | 99.0% Minimum | ||
| % Maximum | % Maximum | ||
| Beryllium Oxide | 0.50 | Lead | 0.002 |
| Aluminum | 0.09 | Magnesium | 0.08 |
| Calcium | 0.02 | Manganese | 0.02 |
| Carbon | 0.10 | Molybdenum | 0.002 |
| Chromium | 0.04 | Nickel | 0.05 |
| Cobalt | 0.001 | Silicon | 0.06 |
| Copper | 0.01 | Silver | 0.0005 |
| Iron | 0.15 | Zinc | 0.02 |
Beryllium to IS-50M specification is typically available as BW-Electrofusion brazed or diffusion bonded X-Ray Window assemblies. Standard thickness ranges from 0.020 to 0.125 inches (0.5 to 3.2mm). Window apertures can be rectangular, circular, or other customized geometric configurations. Assemblies are made to a Vacuum-Tight specification.
