Every time I unwrap a Feather blade it immediately gets put under hot water to melt the bloody wax off it which I hate. (I don’t know why) The blade than gets rinsed completely in ISO 99% and blown dry. I than oil the blade ( I use a nice scented olive oil based shave oil) which is loaded into a beautifully washed and polished Gold Grande. I read a science article showing edge deterioration occurs through oxidation weakening edge stability of the steel. That is the only hot water used in my shave. If it wasn’t for washing the razor (I prefer hot) it would be all cold water. I do not put a SR blade away without oiling it first.( I use mineral food grade oil) All steels oxidize. Oil protects and slows oxidation down dramatically.I read this earlier today as I was researching the benefits of cold water shaving:
This method has several benefits, not just for you, but for your gear as well. Take your razor. Nice, shiny, sturdy piece of metal. Feels nice when it’s warm. So does the blade. But get this. The hot water used to rinse the blade causes the tiny metal molecules in the blade to expand, making the razor dull after only five shaves. Cold water, on the other hand, causes the molecules to contract, giving the blade a better edge and longer life. Just by using cold water, my current Wilkinson Sword blade is on it’s eighth shave.
And from a different source:
More friendly on razor blades. Continuous exposure to hot water makes the metal in your razor blade turn blunt more easily. Men who use cold water say that their blades last longer than when they use hot water.
Seems there's something in this.