Properties and Areas of Use: It is a WATER HARDENED tool steel that is suitable for the production of spiral and external drills, guides, reamers, countersinks, spot drills, milling tools, hole punches, metal brackets, drawing punches and all kinds of punch nails and similar tools.
HOT FORMING AND HEAT TREATMENT
Forging Annealing 1050 – 800 °C
Softening Anneal 700 – 720 °C
Annealing Hardness Maximum 280 HB
Stress Relief 600 °C
Pre-Heat for Hardening: 650 °C
Hardening (quenching) in oil at 780 – 800 °C up to 12 mm
up to 12 – 20 mm in 780 – 790 °C water
up to 20 – 40 mm in 790 – 800 °C water
up to 40 – 60 mm in 800 – 820 °C water
Tempering 180 – 200 °C – 1 hour / 25 mm
