Martensitisch Edelstahl
Martensitisch Edelstahl: AISI: 420/440 - 17-4PH/17-7PH
Martensitische Edelstahl können ebenfalls mit Expanite® gehärtet werden.
Wikipedia:
"Martensitic stainless steel is a specific type of stainless steel alloy.
Martensitic stainless steels can be high or low-carbon steels built around the Type 410 composition of iron, 12% chromium, and up to 1.2% carbon.They are usually tempered and hardened.
Tempered martensite gives steel good hardness and high toughness; used largely for medical tools (scalpels, razors and internal clamps).Untempered martensite is low in toughness and therefore brittle". (From Wikipedia)