Hot Work Tool Steel
HH12/
DIN
1.2606 /
AISI
H12/
4Cr5MoWVi
H12 is a chromium hot work tool steel engineered for strong hot hardness and
wear resistance. It retains strength at elevated temperatures and resists heat checking
during cyclic heating and cooling. The grade offers good hardenability for uniform
properties in larger sections. Its balanced composition supports reliable machining and
consistent heat treatment response. H12 is widely used for die casting dies, hot extrusion
tooling, and forging dies. It performs well in hot shear blades, mandrels, and inserts where
wear resistance is critical. Built for demanding service, H12 helps extend tool life and
reduce downtime.
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