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Chromium

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

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

Brands and guaranteed chemical composition of products made from ERCr chromium

Brands Cr, %
minimum		 Impurities, ppm, maximum
O N C S Fe Si Ni Al Cu
ERCr 99.9-PM 99.9 350 100 200 30 500 100 100 70 40
ERCr 99.95-PM 99.95 200 50 100 20 250 50 40 30 30
ERCr 99.97-PM 99.97 100 50 70 20 100 20 10 20 20
∑ of metallic impurities Al, Fe, Cu, Ni, Si, Ca, K, Li, Mg, Mn, Mo, Na, Pb, Ti, W, Zn and others 300 ppm, maximum
ERCr 99.99-PM 99.99 100 50 70 20 50 10 5 5 10
∑ of metallic impurities Al, Fe, Cu, Ni, Si, Ca, K, Li, Mg, Mn, Mo, Na, Pb, Ti, W, Zn and others 100 ppm, maximum

Shape and dimensions of products made from chromium

Shape of treated product Diameter, mm Thickness, mm Width, mm Length, mm
Plate - From 5 to 50 Up to 1400 Up to 1700
Disc, ring From 65 to 400 From 5 to 50 - -
Rod, cylinder From 15 to 65 - - Up to 600

ECr electrolytic unrefined chromium
Guaranteed chemical composition of ECr chromium

Grade Base Impurities content, % (mass), maximum
O N C S Fe Si Ni Al Cu Pb
ECr Cr 0.55 0.013 0.01 0.02 0.008 0.01 0.005 0.006 0.003 0.001

ERCr electrolytic refined chromium
Guaranteed chemical composition of refined chromium

Grades Cr, %, minimum Impurities, ppm, maximum
O N C S Fe Si Ni Al Cu
ERCr-0 99.99* 50 50 80 20 ∑ Ni, Mo, W, Al, Ca, Co, Cu, Fe, Mg, Mn, Si, Ti, V, K, Li, Na and others 100 ppm, maximum
ERCr-1 99.95* 50 50 80 20 80 100 50 60 30
Nominal chemical composition, max %
Cr, min Fe Si Al S P C N O
99,7 0,18 0,06 0,03 0,003 0,0025 0,025 0,0035 0,03
Nominal chemical composition, max %
Cr, min Pb Sn Sb Bi As Cu Zn Cd
99,7 0,0010 0,004 0,010 0,0005 0,010 0,02 0,006 0,02