1.2343 Steel

Steel name: 1.2343
Diagram No.: 2207
Mat.No. (Wr.Nr.) designation: 1.2343
DIN designation: X37CrMoV5-1
AISI/SAE designation: ~H11
Chemical composition in weight %: 0.38% C, 1.05% Si, 0.40% Mn, 0.025% P, 0.003% S, 5.20% Cr, 1.30% Mo, 0.30% V
Steel group: Hot work tool steels
Properties: Tungsten-free CrMo hot work tool steel. High temperature fatigue resistance and high abrasive wear resistance.
Applications: Tools for pipe and sheet stamping, i.e. punches, mould holders, chambers and bridges, internal and intermediate sleeves, ingot holders. High stress plastic moulds. Mould inserts for high abrasive wear applications for hardening plastics, thermoplastics and composites. Pressure die-casting moulds. Mould inserts, bolts, cores; Al, Mg and Zn pressure die-casting.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Temperature: 1010°C. Duration: 30 sec per 1 mm wall thickness.
Tempering: Temperature: see curve. Duration: 1 h per 25 mm wall thickness. Cooling: air.
Diagram note: Average values for samples dia. 25 x 50 mm long, oil hardened at 1010°C. N/mm2 and HB converted from HRC.

Tempering Diagram

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