::Description
This grade is stronger and more wear resistant than SG Pearlitic iron and capable of much higher

hardness levels. The enhanced properties are the result of increased Nickel, Chromium and

Molybdenum alloys. It also has 3% to 3.4% carbon content alloyed with the nickel, manganese and

molybdenum which forms the nodular cast iron with a bainitic-acicular-maintain the wear resistance

while at the same time exhibiting high strength and resistance to firecracks. All rolls are specially

molded and the final portion of the extensive heat treatment procedure develops an acicular matrix. A

special grade has been introduced  
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::Application
Mainly used for the front stand of section mill and hot strip mill, for front housing of finishing mill and

the wire mill. Also used for roughing and intermediate mill stand.
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::Properties
Its microstructure is composed of matrix and carbide with carbon content of 1.3-2.6%, depending on

content of alloy and heat treatment process.The matrix consists of pearlite and bainite, With the

addition of Cr, Mo and Ni for higher stability of carbide ,enhanced high temperature resistance and

strengthened matrix, the roll has the special merits of small in drop of hardness, highly wear and high

temperature resistant,and high in load bearing capacity feature etc.
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Mechanical Properties         Centrifugal Method         Conventional
Hardness of roll surface      HSD40-55                   HSD40-55
Hardness of roll neck         HSD35-48                   HSD40-55
Tensile strength of core      ≥400MPa                   ≥420MPa
Dia:255mm~900mm(roll body)
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::Chemical composition of shell
 C          Si         Mn        Ni       Cr           Mo
1.3/2.6     0.3/0.6    0.7/1.1   ≥0.2    0.8/1.2     0.2/0.6