General roll recommendation for Bar and Wire Rod

Position Material Hardness
Breakdown Alloy Cast Steel 35 ~ 45 HSC
Adamite 40 ~ 50 HSC
Roughing Stands Pearlitic Nodular Iron 45 ~ 55 HSC
TR1* 45 ~ 55 HSC
Adamite 40 ~ 50 HSC
Graphitic Steel 35 ~ 50 HSC
CPC** 47 ~ 73 HSC
Intermediate Stands Pearlitic Nodular Iron 55 ~ 65 HSC
TR1* 55 ~ 65 HSC
CPC** 70 ~ 83 HSC
Prefinishing & Finishing Stands Pearlitic Nodular Iron 55 ~ 65 HSC
Upper Bainite Iron 60 ~ 75 HSC
Acicular Nodular Iron 65 ~ 78 HSC
Indefinite Chill Iron 65 ~ 80 HSC
Alloy Chill Iron 65 ~ 80 HSC
High Speed Steel 75 ~ 85 HSC
Tungsten Carbide 78 ~ 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

Position Material Hardness
Breakdown Alloy Cast Steel 35 ~ 45 HSC
Adamite 35 ~ 50 HSC
Roughing Stands Alloy Cast Steel 35 ~ 45 HSC
Adamite 35 ~ 50 HSC
Graphitic Steel 35 ~ 50 HSC
Prefinishing
& Finishing Stands
Adamite 45 ~ 60 HSC
Pearlitic Nodular Iron 55 ~ 65 HSC
Steel Base Adamite 55 ~ 65 HSC

General roll recommendation for Hot Strip Mills

Position Material Hardness
Roughing Stands Alloy Steel 35 ~ 45 HSC
Adamite 40 ~ 50 HSC
Graphitic Steel 35 ~ 55 HSC
Pearlitic Nodular Iron 45 ~ 60 HSC
Finishing Stands Indefinite and Alloy Chill Iron 65 ~ 80 HSC
Hi-Chrome Steel 60 ~ 70 HSC
High Speed Steel 75 ~ 85 HSC
CPC * 80 ~ 91 HSC

* Hardness determination based on mill application.

General roll recommendation for Cold Mills

Mill Type Roll Function Material Hardness
Cold Rolling Mill Intermediate Roll 9Cr2M, MC3, MC5 70 ~ 85 HSD
Work Roll 9Cr2MoR, 86CrMoV7, MC3, MC5 80 ~ 105 HSC
Back-Up Roll 60Cr3Mo, 9Cr2Mo, 86CrMoV7, 70Cr3NiMo 60 ~ 80 HSC
Sendzimir & Cluster Mill Intermediate Roll 5H12 55 ~ 60 HSC
Work Roll Cr12Mo1V1, Cr12MoVCo 60 ~ 65 HSC
Forged Shaft 42CrMo, 36CrNiMo4 35 ~ 45 HSC