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Home » Products » Mechanical » Bainitic Nodular Cast Iron Rolls (SGA)
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Bainitic Nodular Cast Iron Rolls (SGA)

Bainitic Nodular Cast Iron Rolls (SGA)
Alloy elements of NiMnCrMo etc., are added to bainitic nodular cast iron rolls for obtaining acicular (bainite-martensite) matrix in its microstructure of these rolls. Its strength and toughnes are higher than Perlitic Nodular Cast Iron Rolls, wearability is also better than latter. These rolls can be produced by static casting and centrifugal casting.
To ensure the best performance of SGA rolls, we might suggest CCSGA for better strength and hardness.We will also help you do the roll pass design. Our goal is to minimize roll failures and breakages.We can offer you different barrel radius from 300mm-1500mm. 
Table.1 Chemical Composition %
Symbol C Si Mn Cr Ni Mo
SGAⅠ 2.90-3.60 1.20-2.20 0.20-0.80 0.20-1.00 3.01-3.50 0.50-1.00
SGAⅡ 2.90-3.60 1.00-2.00 0.20-0.80 0.30-1.50 3.51-4.50 0.50-1.00
Table.2 Prosperities&Application
Symbol Hardness
HS
Tensile Strength
MPa
Bending Strength
MPa
Dimension
MM
Unit N.W
KGS
Application
SGAⅠ 55-78 ≥350 600-800 ¢300-1000 500-12000 Finishing stands of small section mills, bar,rod and hot narrow strip mills,finishing stands of high speed wire mills
SGAⅡ 60-80 ≥350 600-800

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