本规程描述了金属粉末床熔合（PBF）机和设备的操作和生产控制 满足关键应用的过程，如商业航空航天组件和医疗植入物。本文包含的要求适用于使用激光束和电子束的粉末床聚变（PBF）的生产部件和机械试样。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This practice describes the operation and production control of metal powder bed fusion (PBF) machines and processes to meet critical applications such as commercial aerospace components and medical implants. The requirements contained herein are applicable for production components and mechanical test specimens using powder bed fusion (PBF) with both laser and electron beams.All current amendments available at time of purchase are included with the purchase of this document.