Ultra premium

• CPM S110V Edge retention: 10 Corrosion resistance: 6 Ease of sharpening: 1
• CPM S90V Edge retention: 9 Corrosion resistance: 5 Ease of sharpening: 1
• M390 Edge retention: 9 Corrosion resistance: 7 Ease of sharpening: 2
• ZDP-189 Edge retention: 8 Corrosion resistance: 4 Ease of sharpening: 1
• Elmax Edge retention: 8 Corrosion resistance: 5 Ease of sharpening: 3
• CPM-20CV Edge retention: 9 Corrosion resistance: 7 Ease of sharpening: 2

Premium

• CTS-XHP Edge retention: 8 Corrosion resistance: 6 Ease of sharpening: 5
• CPM M4 Edge retention: 9 Corrosion resistance: 2 Ease of sharpening: 2
• CPM S35VN Edge retention: 7 Corrosion resistance: 7 Ease of sharpening: 5
• CPM S30V Edge retention: 7 Corrosion resistance: 7 Ease of sharpening: 5

High end

• 154CM Edge retention: 6 Corrosion resistance: 6 Ease of sharpening: 5
• ATS-34 Edge retention: 6 Corrosion resistance: 6 Ease of sharpening: 5
• D2 Edge retention: 8 Corrosion resistance: 2 Ease of sharpening: 3
• VG-10 Edge retention: 6 Corrosion resistance: 7 Ease of sharpening: 6
• H1 Edge retention: 2 Corrosion resistance: 9 Ease of sharpening: 8
• N680 Edge retention: 5 Corrosion resistance: 8 Ease of sharpening: 6

Upper mid-range

• 440C Edge retention: 4 Corrosion resistance: 4 Ease of sharpening: 6
• AUS-8 Edge retention: 3 Corrosion resistance: 4 Ease of sharpening: 8
• CTS-BD1 Edge retention: 4 Corrosion resistance: 6 Ease of sharpening: 6
• 8Cr13MoV Edge retention: 3 Corrosion resistance: 3 Ease of sharpening: 8
• 14C28N Edge retention: 4 Corrosion resistance: 6 Ease of sharpening: 6

Lower mid-range

• 440A Edge retention: 3 Corrosion resistance: 5 Ease of sharpening: 9
• 420HC Edge retention: 3 Corrosion resistance: 8 Ease of sharpening: 9
• 13C26 Edge retention: 3 Corrosion resistance: 4 Ease of sharpening: 7
• 1095 Edge retention: 3 Corrosion resistance: 2 Ease of sharpening: 8

Low end

• 420J Edge retention: 2 Corrosion resistance: 8 Ease of sharpening: 9
• AUS-6 Edge retention: 3 Corrosion resistance: 5 Ease of sharpening: 9

Source: http://bestpocketknifetoday.com/discovering-the-best-knife-steel/… -->