Yes - certainly not in the annealed condition (pretty hard, but not crazy). It is quite different than 316SS. 316 work hardens so much. I had a big old steam rack (which I understand is 422 SS) and it cut okay with my power hacksaw (using HSS blades) - it is a Kasto PSB, which is a pretty heavy duty unit. It was a thick section (3" thick and 9" deep), so I used a 3 tpi blade, low speed and coolant. I ended up making 10 slices, the blade wasn't new to start and was still cutting well when I finished.
If you are using carbide tooling, it won't be a problem. Given the choice between 316SS and 422SS, I would choose 422