ASTM Committee Proposes Design Guide for 3D-Printed Ceramics

A New Design Rulebook for 3D-Printed Ceramics

ASTM International's additive manufacturing committee is drafting a design guide specifically for ceramic parts made with 3D printing. The working item, WK84355, aims to give product designers a set of rules that account for how ceramics behave when they are sintered, bonded, or cured layer by layer.

Ceramics offer impressive properties: high heat resistance, hardness, chemical inertness, and electrical insulation. But they are also brittle, and they shrink during the final sintering step. Those two traits make ceramic parts much harder to design than metal or plastic prints. A guide that addresses both issues is long overdue.

The F42 committee's proposal frames the effort around practical design criteria. It will cover basic ceramic part properties, the design freedoms that additive manufacturing enables, and the limitations that come with each process. Material extrusion, binder jetting, vat photopolymerization, and material jetting all receive separate attention because each one handles shrinkage and support removal differently.

Brandon Cox, a lead engineer at Electron Optics Lab and an ASTM member, put it plainly: the guide will help customers and regulators evaluate whether an AM ceramic part was designed properly. That last part matters. Regulators and buyers currently have no standardized way to judge if a ceramic print was designed with the right safety margins.

The proposal also links to United Nations Sustainable Development Goals 9 and 12, tying the work to industry innovation and responsible production. That is a broad framing, but ceramics do fit: lighter, more integrated AM parts can replace heavier assemblies, and better design rules reduce waste from failed sintered parts.

This is still a proposal, not a final standard. The F42 committee will gather feedback before the guide becomes an ASTM standard. If it passes, it should make ceramic AM less intimidating for design teams that have been watching from the sidelines.