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Powder made of high-purity refined electrolytic chromium containing the base element 99.99 % Cr and 99.98 % Cr
| Grade | Cr, % (mass)* |
Impurities, ppm, maximum | |||||
|---|---|---|---|---|---|---|---|
| Total content of metallic impurities |
C | N | O | S | |||
| for fraction 56-280 microns (-50 mesh) |
for fraction 56-160 microns (-100 mesh) |
||||||
| MP-ERCr 99.99 | 99.99 min | 100 | 50 | 40 | 120 | 130 | 20 |
| MP-ERCr 99.98 | 99.98 min | 200 | 70 | 50 | 140 | 150 | 20 |
| *Metallic purity. The mass percentage of Cr is determined as the difference between 100% and the total content of metallic impurities, determined using the ICP-MS method | |||||||
Powder of refined electrolytic chromium with a purity of 99.95 % Cr
| Grade, fraction | Cr, % (mass)* | Impurities, ppm, maximum | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Al | Fe | Cu | Ni | Si | C | N | O | S | Other | ||
| MP-ERCr-1 -280 microns (-50 mesh) |
99.95 min | 15 | 150 | 30 | 50 | 100 | 80 | 30 | 120 | 20 | - |
| >MP-ERCr-1 -150 microns (-100 mesh) |
99.95 min | 15 | 200 | 30 | 50 | 100 | 80 | 30 | 200 | 20 | - |
| *Metallic purity | |||||||||||
Powder of low-purity refined electrolytic chromium containing the base element 99.9 % Cr and 99.6 % Cr
| Grade | Cr, % (mass)* | Impurities, ppm, maximum** | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Al | Fe | Cu | Ni | Si | Total content of metallic impurities | C | N | O | S | ||
| MP-ERCr 99.9 | 99.9 min | 70 | 500 | 40 | 100 | 100 | 1000 | 200 | 100 | 350 | 30 |
| MP-ERCr 99.6 | 99.6 min | 70 | 1500 | 50 | 100 | 350 | 4000 | 200 | 100 | 1500 | 30 |
|
*Metallic purity **Impurities norms are shown for powders MP-ERCr 99.9 of the fraction 56-280 microns and MP-ERCr 99.6 of the fraction 0-63 microns (-250 mesh). For powders of other fractions, impurities norms are determined in the specifications |
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Grit from refined electrolytic chromium with a purity of 99.95% Cr and 99.9 % Cr for evaporable sources
| Grade | Cr, % (mass)* | Impurities, ppm, maximum** | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Al | Fe | Cu | Ni | Si | Other impurities, total** |
C | N | O | S | ||
| ERCr 99.95-PM | 99.95 min | 30 | 250 | 30 | 40 | 50 | 100 | 100 | 50 | 200 | 20 |
| ERCr 99.9-PM | 99.9 min | 70 | 500 | 40 | 100 | 100 | 190 | 200 | 100 | 350 | 30 |
|
*Metallic purity **K+Li+Mg+Mn+Mo+Na+V+W |
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