Products
Characteristics
Designation
Strength
max. 230 HB
(≈ max. 780 N/mm²)
Chemical composition
Thermal conductivity at 100 °C
26 W/(mK)
Character
High-alloy hot-work steel, high heat resistance, high wear resistance at elevated temperatures, high toughness, thermal conductivity and hot cracks resistance, limited use for water cooling
For very high requirements available in *ESR (Electro-Slag-Remelting)
Application
Machining
Suited:
Polishing, etching, EDM, nitriding
Hard chrome plating
In special cases
Use
Standard material for hot-work tools, extrusion dies, dies, moulds for plastic processing
Heat treatment
Soft annealing:
750 to 800 °C, about 4 to 5 hours
Slow, controlled cooling inside the furnace of 10 to 20 °C per hour to about 600 °C
Further cooling in air, max. 230 HB
Hardening:
1,020 to 1,060 °C
Maintain curing temperature for 15 to 30 minutes
Quenching in water/oil
Obtainable hardness: 54 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening
Minimum time in furnace: 1 hour per 20 mm part thickness
Technical tip
- Susceptible to corrosion
- During machining, continuous corrosion protection has to be ensured (especially during wire EDM)
- 1.2344 ESR is very suitable for mirror polishing
