High-duty cutting tools (dies and punches), blanking and punching tools, woodworking tools, shear blades for cutting light-gauge material, thread rolling tools, tools for drawing, deep drawing and cold extrusion, pressing tools for the ceramics and pharmaceutical industries, cold rolls (working rolls) for multiple-roll stands, measuring instruments and gauges, small moulds for the plastics industry where excellent wear resistance is required.
|AISI - D2||1.2379||X155CrVMo12-1||SKD-11||Cr12MoV||-|
Chemical Composition (AISI - D2)
|AISI - D2||1.50-1.60||0.10-0.40||0.15-0.45||0.00-0.030||0.00-0.030||11.00-12.00||0.60-0.80||0.90-1.10||-||-||-|
1. Steel with 12% chromium alloyed with vanadium.
2 .Very good wear resistance and excellent cutting performance.
3. High toughness.
4. Can be nitrated (after secondary quenching).
5 .Suitable for vacuum quenching.
2. Immediate Roller for Cold Rolling
3. Mould4. Rolling Cutter
4. Shaping Wheel.
5. Screw Wheel
6. Screw Mould
7. Drawing Die
1. Annealing---Heating slowly and uniformly to 800~850℃, furnace cooling to 600℃ at a rate 10~20℃/h., Hardness max. HB 255.
2. Stress Relieving---650~700℃, furnace cooling.
3. Hardening---Preheating(1)：Warming to 550~600℃, holding 30 minutes per 25 mm.Preheating(2)：Warming to 800~850℃, holding 30 minutes per 25 mm. Austenitizing：Heating to 975~1050℃, holding 30 minutes per 25 mm. Quenchant：By oil (40~70℃) or by air.
4. Tempering---Low temperature tempering：Heating to 150~200℃, holding over 60 minutes per 25 mm. Air-cooling. Hardness min. HRC 61High temperature tempering：Heating to 480~540℃, holding over 60 minutesper 25 mm. Air-cooling. Double tempering. Hardness min. HRC 58
Notes：In low temperature tempering, steel must be hold at lower austenitizing temperature, about 975~1025℃. In high temperature tempering, steel must be hold at higher austenitizing temperature, about 1000~1050℃。