Low Pressure Carburizing (LPC) in combination with High Pressure Gas Quenching (HPGQ) has been established as an advanced and robust technology for case hardening. The process can be applied with batches consisting of multiple layers as well as batches consisting of single-layers. The paper shows the latest progress in LPC and HPGQ for the heat treatment of automotive and aerospace components. Significant progress has been made by continuous improvements in the fields of- Fixturing / load densities,- Reduction of cycle times,- Control of distortion,- Digitalization / Automation,- Quality control and- Integration of heat treatment into the manufacturing line. Practical applications are shown for both multiple- and single layer treatment.