Dies and Die Materials for Hot Forging,Dies and Die Materials for Hot ForgingDIE MATERIALS used for hot forging include hot-work tool steels (AISI H series), some alloy steels such as the AISI
4300 or 4100 series, and a small number of proprietary, lower-alloy materials. The AISI hot-work tool steels can be
loosely grouped according to composition (see Table 1). Die materials for hot forging should have good hardenability as
well as resistance to wear, plastic deformation, thermal fatigue and heat checking, and mechanical fatigue (see the section
"Factors in the Selection of Die Materials" in this article). Die design is also important in ensuring adequate die life; poor
design can result in premature wear or breakage.
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