Markforged's bound-powder H13 Tool Steel filament is designed for use on the Markforged Metal X system. The material is a hot-work class steel optimized for its high temperature hardness and abrasion resistance. This makes it a great fit for high temperature molding applications like inserts, cores, and dies. It is resistant to thermal fatigue and premature heat-checking, and has excellent through-hardening properties. The bound-powder filament is very safe and easy to use compared to loose powder based systems.