D2 Blade Steel, 3.5 x 45 x 500 mm
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D2 Blade Steel 3.5 x 45 x 500 mm
D2 knife steel. Manufactured by Bohler-Uddeholm, grade K110 of the D2 classification popular with European knifemakers.
D2 is known for very high abrasion resistance (high carbon and vanadium), meaning it holds an edge for a long time. D2 is a "semi-stainless" with 12% chromium which gives some protection against corrosion but not enough to be classified as a stainless steel.
C 1.5 % Si 0.3 % Cr 12 % Mo 0.8% V 0.9%
Forging: 1050 to 850°C Slow cooling in furnace or thermoinsulating material.
Annealing: 800 to 850°C Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.
Stress relieving: 650 to 700°C Slow cooling in furnace. Intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 to 2 hours.
Hardening: 1020 to 1040°C, holding time after temperature equalization 15 to 30 minutes.Air hardening steel, in still air. Obtainable hardness: 58 - 61 HRC.
Tempering: 2 hours x 2 at 200-205 C for 59-60 HRC