Daido Steel introduces hot die steel-based powders for Additive Manufacturing

April 12, 2022

April 12, 2022

CAD model of an additively manufactured mould using DAPTM-AM HTC40. Built with GE Additive’s Concept Laser M2 machine (Courtesy Daido Steel)
CAD model of an additively manufactured mould using DAPTM-AM HTC40. Built with GE Additive’s Concept Laser M2 machine (Courtesy Daido Steel)

Speciality steel manufacturer Daido Steel, headquartered in Nagayo, Japan, has released hot die steel-based powders for Additive Manufacturing. DAP™-AM HTC™ (Daido Alloy Powder for Additive Manufacturing with High Thermal Conductivity) is a cobalt-free powder suitable for Laser Beam Powder Bed Fusion (PBF-LB) Additive Manufacturing, based on H13 steel.

In the fields of aluminium die casting and plastic injection moulding, moulds have been additively manufactured using PBF-LB technology in order to allow more design freedom in cooling channels. Since PBF-LB uses lasers to melt and solidify metal powder in layers, thermal stresses can form in proportion to the size of the moulds.

Die steels like H13, with high hardness, are said to crack relatively easily during the Additive Manufacturing process. Another common option, maraging steel, is less likely to crack during moulding, but the thermal conductivity is lower than H13, meaning cracking may occur in the cooling channels. Another downside of maraging steel is that it contains cobalt, a substance that is regulated in Japan.

Daido Steel created DAP-AM HTC in an effort to mediate these issues. The powders are said to have conductivity 1.5 x greater than that of H13 and two times higher than maraging steel. With these attributes, DAP-AM HTC is said to contribute to shorter cycle times (due to lower mould temperatures) and improved mould lifespan (fewer heat cracks due to lessened thermal stress).

Several die-casting companies in Japan have evaluated moulds made from DAP-AM HTC and are said to have obtained favourable results. Daido Steel expects to continue the development of metal powders suitable for Additive Manufacturing machines and eventually expand the product lineup of the DAP-AM HTC series.


April 12, 2022

In the latest issue of PM Review…

Download PDF

Extensive Powder Metallurgy industry news coverage, and the following exclusive deep-dive articles and reports:

  • From powder modification to rejuvenation: Fluidised Bed Reactors in metal powder production and Additive Manufacturing
  • Retech: Enabling the atomisation of reactive and refractory alloys at substantially higher levels of productivity and lower cost
  • Sustainability in Powder Metallurgy: Highlights from the 41st Hagen Symposium
  • Innovations from Japan’s Powder Metallurgy industry: award winners highlight novel automotive and healthcare applications

The latest news from the world of metal powders, delivered to your inbox

Don't miss any new issue of PM Review, and get the latest industry news. Sign up to our weekly newsletter.

Sign up

Join our community

Discover our magazine archive…

The free-to-access PM Review magazine archive offers unparalleled insight into the world of Powder Metallurgy from a commercial and technological perspective through:

  • Reports on visits to leading PM part manufacturers, metal powder manufacturers and industry suppliers
  • Articles on technology and application trends
  • Information on materials developments
  • Reviews of key technical presentations from the international conference circuit
  • International industry news

All past issues are available to download as free PDFs or view in your browser.


Browse the archive


Looking for PM production equipment, metal powders, R&D support and more?

Discover suppliers of these and more in our
advertisers’ index and buyer’s guide, available in the back of PM Review magazine.

  • Powders & materials
  • Powder process, classification & analysis
  • PM products
  • Atomisers & powder production technology
  • Compaction presses, tooling & ancillaries
  • Sintering equipment & ancillaries
  • Post-processing
  • Consulting & toll sintering
View online
Share via
Copy link