2343 ISO-B MOD Steel

Steel name: 2343 ISO-B MOD
Diagram No.: 2288
Mat.No. (Wr.Nr.) designation: 1.2343 mod.
DIN designation: ~X37CrMoV5-1
AISI/SAE designation: ~H11 mod.
AFNOR designation: Z38CDV5
Chemical composition in weight %: 0.35% C, 0.30% Si, 0.40% Mn, <0.010% P, <0.003% S, 5.00% Cr, 1.35% Mo, 0.50% V
Steel group: Hot work tool steels
Properties: This hot work tool steel specially developed for the aluminium and magnesium die casting industry is distinguished by outstanding toughness characteristics. This steel is designed on the basis of a composition modifi cation to suppress temper embrittlement and secondary metallurgical measures required for ISO-B quality. This provides the basic requirements for long tool life in die-casting and extrusion processes.
Applications: Highly stressed die-casting moulds and inserts with high tool life expectancy. Extruder tools including pipe extruders such as die holders, insert and bridge type tools, liners and liner holders. Plastic moulds subject to abrasive stress with tool hardnesses up to 50 HRC, combined with surface coating if required.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Temperature: 1000 °C. Duration: 30 seconds per mm wall thickness.
Tempering: Temperature: See tempering curve. Duration: 1 hour per 25 mm wall thickness. Cooling: Air.
Diagram note: Average values on samples dia. 25 x 50 mm long, hardened at 1000 °C in oil. HB converted from HRC.

Tempering Diagram

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