I have some steel razors from box cutters and I’ve search online and found no real solution to how I can recycle them. I don’t want to put them in the garbage as I do not want any human or animal to suffer. The only answer I can come up with is you use an empty plastic or glass jar with a screw on lid, and fill it up with old blades until you need to dispose of them. You should then call your local sanitation department and see what they suggest. I would think you could recycle them, but it certainly would not be advisable to put them in a public metal recycling bin in case of injury.
Be a safe recycler.