These rolls have hard
alloy iron on the working layer and soft grey iron
or SG iron core depending upon the application. The
shell matrix with proper distribution of carbides
and graphite imparts high wear resistance, stability
in shape and good surface finish. the softer core
ensures good mechanical properties and resistance to
thermal & mechanial loads.
Hs 34-45 °Sh-C SG
Iron Core x 100
Hs 75-85 °Sh-C
Grey Iron Core x 100
APPLICATION
Particularly suitable
for rolling of flat products in Hot strip mills,
Plate mills and the first stand of Tinplate Tanderm
cold mills. Suitable for the finishing stands of
wire rod mills as well. Can also be used for cold
rolling of non-ferrous sheets.
CHEMICAL COMPOSITION(SHELL)
C
Ni
Cr
Mo
3.15-3.35
3.80-4.20
1.40-1.80
0.30-0.50
3.25-3.45
4.20-4.50
1.60-1.90
0.30-0.50
CHEMICAL COMPOSITION(CORE)
C
Ni
Mo
Mg
3.00-3.50
1.50-2.00
0.45-0.75
-
3.20-3.50
1.80-2.50
0.50 max
0.04-0.07
MECHANICAL PROPERTIES
Barrel
Hardness
Neck
Hardness
U.T.S
Impact
°Sh-C
°Sh-C
N/mm2
J/cm2
65-70 (in step
of 5° Sh-C)
75-85
(in steps
of 5° Sh-C)
