Products
Characteristics
Designation
Strength
max. 269 HB
(≈ max. 915 N/mm²)
Chemical composition
Thermal conductivity at 100 °C
27.4 W/(mK)
Character
High-speed steel featuring high resistance to adhesive and abrasive wear in combination with high toughness and compressive strength. High heat resistance, ideal for through hardening
Application
Machining
Suited:
Polishing
Ideally suited:
Nitriding, EDM, coating
Use
Blocks for eroding, cold-forming tools such as cutting or fine blanking punches, impact extrusion punches, and die plates
Mould inserts with very high wear resistance
Heat treatment
Soft annealing:
820 to 850 °C, about 2 to 5 hours
Slow controlled cooling inside the furnace of 10 to 20 °C per hour to about 550 °C
Further cooling in air, max. 270 HB
Hardening:
1,190–1,230 °C
Quenching in oil/compressed gas/air/hot bath
Obtainable hardness: 66 HRC
Tempering:
Slow heating to tempering temperature (in order to avoid the formation of cracks) immediately after hardening
Triple tempering is recommended
Technical tip
Excellent for PVD and CVD coating without risk of dimensional changes, as the steel is tempered at more than 520 °C
