General roll recommendation for Bar and Wire Rod

PositionMaterialHardness
BreakdownAlloy Cast Steel35 ~ 45 HSC
Adamite40 ~ 50 HSC
Roughing StandsPearlitic Nodular Iron45 ~ 55 HSC
TR1*45 ~ 55 HSC
Adamite40 ~ 50 HSC
Graphitic Steel35 ~ 50 HSC
CPC**47 ~ 73 HSC
Intermediate StandsPearlitic Nodular Iron55 ~ 65 HSC
TR1*55 ~ 65 HSC
CPC**70 ~ 83 HSC
Prefinishing & Finishing StandsPearlitic Nodular Iron55 ~ 65 HSC
Upper Bainite Iron60 ~ 75 HSC
Acicular Nodular Iron65 ~ 78 HSC
Indefinite Chill Iron65 ~ 80 HSC
Alloy Chill Iron65 ~ 80 HSC
High Speed Steel75 ~ 85 HSC
Tungsten Carbide78 ~ 85 HRA
CPC**75 ~ 90 HSC

*TR1 is a special material which wears better than traditional materials. It is designed to be used at early and medium stands for long products.

**Hardness determination based on mill application.

General roll recommendation for Structural Mills

PositionMaterialHardness
BreakdownAlloy Cast Steel35 ~ 45 HSC
Adamite35 ~ 50 HSC
Roughing StandsAlloy Cast Steel35 ~ 45 HSC
Adamite35 ~ 50 HSC
Graphitic Steel35 ~ 50 HSC
Prefinishing
& Finishing Stands
Adamite45 ~ 60 HSC
Pearlitic Nodular Iron55 ~ 65 HSC
Steel Base Adamite55 ~ 65 HSC

General roll recommendation for Hot Strip Mills

PositionMaterialHardness
Roughing StandsAlloy Steel35 ~ 45 HSC
Adamite40 ~ 50 HSC
Graphitic Steel35 ~ 55 HSC
Pearlitic Nodular Iron45 ~ 60 HSC
Finishing StandsIndefinite and Alloy Chill Iron65 ~ 80 HSC
Hi-Chrome Steel60 ~ 70 HSC
High Speed Steel75 ~ 85 HSC
CPC *80 ~ 91 HSC

* Hardness determination based on mill application.

General roll recommendation for Cold Mills

Mill TypeRoll FunctionMaterialHardness
Cold Rolling MillIntermediate Roll9Cr2M, MC3, MC570 ~ 85 HSD
Work Roll9Cr2MoR, 86CrMoV7, MC3, MC580 ~ 105 HSC
Back-Up Roll60Cr3Mo, 9Cr2Mo, 86CrMoV7, 70Cr3NiMo60 ~ 80 HSC
Sendzimir & Cluster MillIntermediate Roll5H1255 ~ 60 HSC
Work RollCr12Mo1V1, Cr12MoVCo60 ~ 65 HSC
Forged Shaft42CrMo, 36CrNiMo435 ~ 45 HSC