M398 MICROCLEAN Steel

M398 MICROCLEAN Steel

Steel name: M398 MICROCLEAN
Diagram No.: 2267
Chemical composition in weight %: 2.70% C, 0.50% Si, 0.50% Mn, 20.00% Cr, 1.00% Mo, 7.20% V, 0.70% W
Steel group: PM plastic mould steels
Properties: BÖHLER M398 MICROCLEAN is a martensitic chromium steel produced with powder metallurgy. Due to its alloying concept this steel offers extremely high wear resistance and high corrosion resistance – the perfect combination for highly wear-resistant tools.
Applications: Due to its property-profile BÖHLER M398 MICROCLEAN can be used for following applications: non return valves, screws for injection moulding machines, tool inserts for injection moulding, extrem wear resistant components, cutting type instruments and knives.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Austenitizing temperature: 1,120 to 1,180 °C (2,050 to 2,155 °F). Holding time after through-heating: 20 – 30 minutes for a hardening temperature of 1,120 to 1,150 °C (2,050 to 2,100 °F), 5 – 10 minutes for a hardening temperature of 1,180 °C (2,155 °F). Quenching media: Oil, N2.
Tempering: Tempering for highest corrosion resistance. Deep freezing for transformation of retained austenite. Slow heating to tempering temperature. Time in furnace 1 hour for each 20 mm (0.79 inch) of workpiece thickness, but at least 2 hours. For information on the achievable hardness after tempering please refer to the tempering chart. Tempering: 200 to 300 °C (390 – 570 °F).
Diagram note: No data

Tempering Diagram

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Disclaimer: The material data is a central depository of information based on global actual tests and calculated software data that is available to the public for a fee. The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.