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Steel Base Alloy

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Product Details

Place of Origin:	Hebei in China

Specifications

::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
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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

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