I am wondering about corrosion of the steel blades on my ice fishing auger. The auger is used on fresh water lakes (ie no salt involved). I have traditionally brought the auger inside to melt the ice off. Then I dry and oil the blades. I am tempted to leave the auger outside over night in the well below freezing temperature. The blades are relatively expensive and impossible to sharpen. I have no idea as to the grade of steel. It does look like a plain carbon steel.
Your thoughts would be appreciated, Grouseman