Hitachi

Hitachi Metals America

Hitachi
Symbol
Material Substance Main Usage Characteristics
FB-5 3%Cr Steel Tandem Mill Back Up Roll
Reversing Mill Back Up Roll
General Use
FB-7 5%Cr Steel Tandem Mill Back Up Roll
Reversing Mill Back Up Roll
High Hardness
Deep Hardness penetration
NBR Special Material Continuous Tandem Mill Back Up Roll Fatigue Resistance
Wear Control
NBX Special Material Hot Strip Mill Back Up Roll for High Speed Steel Work Roll Wear Resistance
Abrasion Resistance