Work Item
ASTM WK75265

New Guide for Additive Manufacturing of Polymers -- Powder Bed Fusion -- Guidelines for Feedstock Recycling and Sampling Strategies

1. Scope

The purpose of this standard is to provide guidance to polymer powder bed fusion (PBF) users on best practice for recycling their polymer powder feedstock after having been used in the PBF process. It will outline optimal strategies for evaluating their recycled powder and how incorporating recycled power into their future builds can affect the performance of the parts being created in the additive manufacturing process.


Powder Bed Fusion; polymer powder; recycling guidance; polymer powder evaluation


In PBF, polymeric powder is used to create a 3 dimensional components in a layer-by-layer process. Any excess powder involved in the process is typically recycled and potentially re-used in subsequent manufacturing runs. Although PBF users are currently using their own or manufacturer advised processes, there are still challenges for recycling and re-use that need to be overcome. These challenges are as follows: 1.There is no standard procedure to evaluate recycled polymer powder quality 2.There are no existing standards on whether or not a used feedstock can be recycled/re-used 3.There is no published best-practice for using recycled powder and how to incorporate used powder in future builds This guide will address these challenges and provide guidance on best-practice for the recycling/re-use of polymers powders for use within PBF.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: F42.05

Committee: F42

Staff Manager: Pat Picariello

Work Item Status

Date Initiated: 12-22-2020

Technical Contact: Edward Cant

Item: 001

Ballot: F42.05 (21-03)

Status: Will Reballot Item

Item: 001

Ballot: F42 (22-05)

Status: Will Reballot Item