Aogami Super – Made up of Carbon: 1.40 – 1.50%, Tungsten: 2.00 – 2.50%, Vanadium: .30 - .50%, Chromium: .30 - .50%, Molybdenum: .30 - .50%, Manganese: .20 - .30%, Phosphorus: .025%, Sulfur: .004%, Silicon: .10 - .20% This is one of the most popular high carbon steel alloys amongst Japanese knife makers. It is known for the very high edge retention and fine edge it is capable of. Wear resistance is medium so it is very easy to sharpen. It is very reactive so wiping down and drying should be done after every use. Moritaka and Takeda are two of the most well-known makers using this steel.