How does HIP enhance mechanical properties of 316L SLM parts?

Porosity Elimination and Density Improvement

SLM-printed 316L may contain residual porosity due to rapid solidification. Hot isostatic pressing (HIP) applies high pressure and temperature to eliminate voids, resulting in near-full density. This significantly improves structural integrity and mechanical reliability for pressure components and load-bearing assemblies.

Enhanced Fatigue and Ductility

HIP treatment refines microstructures and reduces stress concentration points. This enhances ductility and fatigue resistance, making 316L parts suitable for long-term use in demanding sectors such as power generation and pharmaceutical equipment.

Dimensional Stability and Phase Uniformity

HIP helps stabilize grain boundaries and reduce microstructural anisotropy, reducing the risk of deformation during machining or service loading. This ensures consistent mechanical response across the component, supporting high precision operations.

Post-Finishing Readiness

After HIP, final dimensional accuracy and surface quality can be achieved with CNC machining or polishing. The combined process ensures aerospace- and medical-grade quality for complex geometries and functional surfaces.