Laser Powder Bed Fusion (LPBF) Produced Parts, 3.5Cr – 7.5Ni – 16.3Co – 1.75Mo – 0.2W – (0.10 – 0.15 C)
AMS7056
This specification covers a premium aircraft-quality alloy steel in the form of parts produced by laser powder bed fusion (LPBF) that are subjected to post-deposition stress relief (SR; optional), hot isostatic press (HIP), solution heat treatment, and tempering aging operations. Parts may require subsequent machining, or surface finishing to meet specific application requirements, which are not covered in this specification.
Rationale: This specification is intended to provide technical requirements and quality assurance provisions and to reference additional required specifications for precursor materials, processes and all secondary operations for the laser powder bed fusion processing of premium aircraft-quality alloy steel.
