Caldie Steel

Caldie Steel

Steel name: Caldie
Diagram No.: 2177
Chemical composition in weight %: 0.70% C, 0.20% Si, 0.50% Mn, 5.00% Cr, 2.30% Mo, 0.50% V
Steel group: Cold work tool steels
Properties: No data
Applications: Uddeholm Caldie is suitable for short to medium run tooling where chipping and/or cracking are the predominant failure mechanisms and where a high compressive strength (hardness above 60 HRC) is necessary.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Austenitizing temperature: 1000–1050°C (1830–1920°F), normally 1020°C (1870°F), in case of bigger dimensions (>150 mm cross section) 1000°C (1830°F). Holding time: 30 minutes after the tool is heated through. Quenching media: Vacuum (high speed gas with sufficient overpressure minimum 2 bar). Martempering bath or fluidized bed at approx. 200–550°C (390–1020°F). Forced air/gas.
Tempering: Choose the tempering temperature according to the hardness required by reference to the tempering graph below. Temper at least twice with intermediate cooling to room temperature. For highest dimensional stability and ductility, a minimum temperature of 540°C (1000°F) and three tempers is strongly recommended. Tempering at a lower temperature than 540°C (1000°F) may increase the hardness and compressive strength to some extent but also impair cracking resistance and dimensional stability. However, if lowering the tempering temperature, do not temper below 520°C (970°F). When tempering twice the minimum holding time at temperature is 2 hours. When tempering three times the minimum holding time is 1 hour.
Diagram note: No data

Tempering Diagram

Price: 20.00 US $
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