Kohsei Co.,Ltd. Kitakyushu Plant

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Electrolytic Chromium

High-End Material

Kohsei Kitakyushu Plant is the only producer in Asia that has the high-purity degassing technology and large-lot production capacity. Our technology can bring O, N and S to an extreme low content such as 20ppm. As one of the top suppliers of Chromium metal, Kohsei can adequately provide customers with high purity and high quality Cr flakes and powders, which are used for producing high quality Cr sputtering targets.

Process Flow

Electrolytic Chromium. Process flow

Product Specifications

PDF File

Electrolytic Cr Flakes

Grade Element(ppm)
C S O P Fe Al Pb Cu
A ≦50 ≦200 ≦5000 ≦20 ≦100 ≦20 ≦20 ≦40
B 50 200 5000 20 100 20 20 40

Degassed Electrolytic Cr Flakes (Cr≧99.99%)

Grade Element(ppm)
C S O N Si P Fe Al Pb Cu
S ≦20 ≦2 ≦20 ≦10 ≦20 ≦10 ≦20 ≦10 ≦1 ≦10
A ≦20 ≦20 ≦30 ≦20 ≦20 ≦10 ≦20 ≦10 ≦1 ≦10
B ≦30 ≦30 ≦50 ≦20 ≦50 ≦10 ≦50 ≦10 ≦1 ≦10
C 30 30 50 20 50 10 50 10 1 10

Degassed Electrolytic Cr Powders

Particle Size*1 Mesh*2 Element(ppm)
Cr C S O N Si Fe
-10µm ≧99.50% ≦500 ≦50 ≦4500 ≦1000 ≦30 ≦2500
-38µm -400
mesh
≧99.90% ≦100 ≦50 ≦1000 ≦200 ≦30 ≦300
-45µm -325
mesh
≧99.95% ≦100 ≦50 ≦750 ≦150 ≦30 ≦300
-75µm -200
mesh
≧99.95% ≦100 ≦50 ≦400 ≦50 ≦30 ≦200
-150µm -100
mesh
≧99.95% ≦50 ≦30 ≦180 ≦50 ≦30 ≦100
-250µm -60
mesh
≧99.95% ≦30 ≦30 ≦100 ≦20 ≦20 ≦50
*1 Standard Sieves Particle Size (JIS Z 8801-1:2006/ISO3310-1:2000)
-10µm: Shimadzu Laser Diffraction Particle Size Analyzer SALD-2200
*2 ASTM Standard (E11)
Super-Fine Chromium Powders

Cr Powders with High Flowability

Particle Size
*1
Mesh
*2
Flowability
*3
Element(%) H2O
(%)
Cr C S Si P Fe Al Cu Ti Hg
-180
µm
-80
mesh
≦25s ≧99.0 ≦0.02 ≦0.01 ≦0.2 ≦0.03 ≦0.35 ≦0.25 ≦0.05 ≦0.05 ≦0.0002 ≦0.03
*1 Standard Sieves Particle Size(JIS Z 8801-1:2006/ISO3310-1:2000)
*2 ASTM Standard(E11)
*3 ASTM Standard(B213)

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