Docol PHS 1500 Steel

Steel name: Docol PHS 1500
Diagram No.: 7265
Type of diagram: CCT
Chemical composition in weight %: 0.20-0.25% C, 0.15-0.35% Si, 1.00-1.35% Mn, max. 0.025% P, max. 0.005% S, max. 0.35% Cr, 0.0020-0.0050% B
Steel group: Boron steels
Note: Calculated diagram. Austenitization and cooling parameters are critical in order to obtain a fully martensitic microstructure. Typical austenitization temperature and time is 870–950°C for 3–5 minutes. With decreasing furnace temperature, the austenitization time increases. The heating cycle is also very much depending on capacity of the equipment/furnace used and the sheet thickness. Figure below shows theoretical CCT diagram. The critical cooling rate obtained to achieve a martensitic microstructure is >30°C/s for PHS 1500 and PHS 1800 and > 50°C/s for PHS 2000. Theoretical CCT diagrams are based on the material temperature, not the furnace temperature.
Reference: Not shown in this demo version.

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