K490 MICROCLEAN Steel

K490 MICROCLEAN Steel

Steel name: K490 MICROCLEAN
Diagram No.: 2253
Chemical composition in weight %: 1.40% C, 6.40% Cr, 1.50% Mo, 3.70% W, 3.50% W, +Nb
Steel group: PM cold work tool steels
Properties: BÖHLER’s K490 MICROCLEAN is a greatly improved and more efficient cold work tool steel compared with other commonly used PM steels such as M4 or PM23. Toughness is more than doubled with a similar wear resistance.
Applications: Blanking and punching industry, cold forming applications, industrial knives, plastics processing industry.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 1030 to 1080 C (1885 to 1980 F)/oil, N, following temperature equalisation: 20 to 30 minutes for a hardening temperature of 1030 to 1080 C (1885 to 1980 F).
Tempering: Slowly heat to tempering temperature immediately after hardening. Time in furnace: 1 hour for every 20 mm (0.79 inch) of workpiece thickness but at least 2 hours. Cool in air. We recommend that the steel be tempered at least 3 times. Obtainable hardness: 58 to 64 HRC.
Diagram note: Sample size 35 x 15 mm.

Tempering Diagram

Price: 20.00 US $
Buy Online Tempering Diagram

Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

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