Hardened steel nozzle vs brass nozzle - the layer adhesion test

In the CHT nozzle test, there was surprising result, test specimens printed with the hardened steel nozzle had 1/3 layer adhesion compared to objects printed with brass nozzle using the same temperatures. In this experiment, I want to find what settings we have to use with steel nozzle to have similar layer adhesion.
CHT nozzle video: https://youtu.be/ZyE9A2vx5C8
Results download from: https://www.mytechfun.com/video/308

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Chapters:
0:00 Introduction
0:41 The plan
1:36 Nozzle change
1:55 3D printing
2:26 Pulling test 0.6 mm
3:00 Pulling test 0.4 mm
3:31 Results
4:25 Conclusions

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Видео Hardened steel nozzle vs brass nozzle - the layer adhesion test канала My Tech Fun