|
steels,
most of which contain well less than 3% Cr. Tool
steels, superalloys and other specialty metals,
though often high in chromium content, are produced
in smaller quantities and therefore rank lower in
over-all chromium application. Chromium is most
commonly supplied as ferrochrome.
The
principal impurities in ferrochrome are carbon and
silicon. As is often the case, carbon level is most
important in determining the price differential
between the various ferrochrome grades. Low carbon
ferrochrome is now added mostly for final chemistry
adjustments in the production of stainless steel.
Nitrogen-bearing low carbon ferrochrome provides a
simple means of making a nitrogen addition to
chromium bearing steels, particularly conventionally
melted stainless grades. These grades of stainless
can also be produced economically with elemental N2
in the AOD.
Specification :
ATEMS offers the
following specifications of LC FeCr
|
Composition |
Size |
| |
% |
10 – 100
mm |
|
Cr |
65%min |
|
|
C |
0.060 max |
|
|
Si |
1% max |
|
|
P |
0.030max |
|
|
S |
0.010 max |
|
|
N |
0.040 max |
|
|
Mn |
0.40 max |
|
|
Ti |
0.060 max |
|
|