SGI Bainitic Accicular Rolls

These Rolls are stronger and more wear resistance with respect of S.G.1. Pearlitic Rolls and are capable of much higher hardness because S.G.1. Bainitic Accicular is more alloyed with very higher % of Nickel and Molybdenum than the S.G.I Pearlitic and as a result, the accicular roll material has a bainitic matrix with increased carbide. The name of this material is based on its constituents of nodular graphite and carbides in an accicular (needle-like) bainitic matrix, also called Lower Bainitic. These Rolls become a benchmark in the rolling of long product and is suitable for a wide range of applications due to its hardness penetration, good wear resistance and tough necks

 

Range of Chemical Composition
C% Mn% SI% Cr% Ni% Mo% Cu% S% P%
3.00 0.20 1.20 0.20 2.50 0.40 0.20 0.015 0.060
4.00 1.00 2.50 1.00 4.50 1.20 Max Max Max
 
 
 
Typical Physical Properties
  N/mm2 Tons/sq.in.
Tensile Strenght 570 36
Bending Strenght 1000 65
Application
Product Type of Mill Position
Sheet & Coil Temper Back Up Rolls
Sheet & Coil Double Reduction Back Up Rolls
Sheet & Coil 2 High Skin Pass -
Rod 2 & 3 High Intermediate & Finishing
Bar 2 & 3 High Finishing
Small Section 2 & 3 High Intermediate & Finishing
Medium Section 2 & 3 High Finidhing
Beams Universal Horizontal Rolls & Sleeves
Small & Medium Section Straightering -
Plate 2 & 3 & 4 High -
Sheet 2 & 3 High Finishing
Wide Strip 2 & 4 High Roughing & Finishing
TMT & Wir Rod 2 High Roughing & Intermediate
 
Typical Hardness (Shore*C)
SG-AC 55 53-58
SG-AC 58 55-60
SG-AC 60 58-63
SG-AC 63 60-65
SG-AC 65 63-68
SG-AC 68 65-70
SG-AC 70 68-73
SG-AC 73 68-75
SG-AC 75 72-77
SG-AC 77 75-80