General
Uddeholm Hotvar is a high performance molybdenum-vanadium alloyed hot-work tool steel which is characterized by:

• high hot wear resistance

• very good high temperature properties

• high resistance to thermal fatigue

• very good temper resistance

• very good thermal conductivity

Improved tooling Performance
Uddeholm Hotvar is a specially premium hot work steel developed by Uddeholm to provide a very good performance in tooling up to 650°C. The alloy elements in Uddeholm Hotvar are balanced to give high hot wear resistance and good high temperature properties. Uddeholm Hotvar is manufactured by special techniques.

Applications
Uddeholm Hotvar is a hot-work tool steel suitable for applications where hot wear and/or plastic deformation are the dominating failure mechanisms.
Applications and tools of especial interest:

• warm forging, dies and punches

• roll forging, rolling segments

• rock orbital forging, punches and dies

• upset forging, clamping tools

• progressive forging, dies

• axial closed die rolling, top and bottom dies

• cross forming, segments

• hot bending, tools

• hot calibration, tools

• zinc die casting, dies

• Al-tube extrusion

Recommended hardness level is 54-58 HRC. For improving the wear resistance the tools can be plasma nitrided or nitrocarburized.