Hot forging dies are exposed to severe mechanical and thermal cyclic loading. This causes hot wear, cracks and plastic deformation in the die. To prevent this, use materials with good hot strength and ductility/toughness. Uddeholm Orvar Superior is suitable in most standard hot forging applications. When higher toughness is demanded, use Uddeholm Dievar. For best hot wear resistance, Bohler W360 Isobloc is recommended. In brass/copper forging, Uddeholm QRO 90 Supreme is a good choice.
Very high stresses and thermal shocks in production lead to wear and thermal fatigue. For best result use materials with very good hot strength and thermal shock resistance like Uddeholm QRO 90 Supreme. When high toughness is needed, use Uddeholm Dievar.
Semi Hot Forging/Warm Forging
In semi hot/warm forging the tool parts are subjected to very high mechanical loads and intensive cooling. This leads to high degrees of wear and thermal fatigue. To avoid this use materials with good hot strength like Bohler W360 Isobloc or Uddeholm QRO 90 Supreme. When extremely good ductility is required, use Uddeolm Dievar.