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分类清单

铬系列-en

Chromium
 
 
Uses:

This standard applies to the chromium additives of refining high-temperature alloy, resistance alloy and precision alloy.

The product quality standard implements national standard GB3211-2008
 
Appearance quality
 

The chromium surface should be finishing, showing the nature of chromium and the section should be dense without pores.

Packing
 
The product is packed in iron barrel or woven bag. The net weight is 100kg each barrel and 1000kg each bag.
 
Physical state
 
The chromium should be delivered in blocks. The biggest block should pass the 150mm×150mm sieve pore; the block amount passing 10mm×10mm sieve pore should not be more than 10% of the total batch. The blocks passing the 3mm×3mm sieve pore should not be delivered.
Grade and chemical composition
 
Grade Chemical composition
Cr Fe Si Al Cu C S P Pb Sn Sb Bi As N H O
JCr99-A 99.0 0.35 0.25 0.30 0.02 0.02 0.02 0.01 0.0005 0.001 0.001 0.001 0.001 0.05 0.01 0.50
JCr99-B 99.0 0.40 0.30 0.30 0.04 0.02 0.02 0.01 0.0005 0.001 0.001 0.001 0.001 0.05 0.01 0.50
JCr99.5-A 98.5 0.45 0.35 0.50 0.04 0.03 0.02 0.01 0.0005 0.001 0.001 0.001 0.001 0.05 0.01 0.50
JCr99.5-B 98.5 0.50 0.40 0.50 0.06 0.03 0.02 0.01 0.0005 0.001 0.001 0.001 0.001 0.05 0.01 0.50
JCr98 98.0 0.80 0.40 0.80 0.06 0.05 0.03 0.01 0.0001 0.001 0.001 0.001 0.001  

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