M238

Product Description

BÖHLER M238 is a hardened and tempered, not corrosion resistant plastic mould steel. Because of the Ni-addition, there is no hardness decrease in the center of large sizes (up to 600 mm). A special melting technology offers good machinability.

M238_Diagramm1.jpg

Property Features

The hardened and tempered plastic mould steel. Because of the Ni-addition, there is no hardness decrease in the center of large sizes.

Technical Specifications

Etchability Machinability supplied Polishability Through hardenable Toughness Wear resistance

Material Numbers


1.2738 40CrMnNiMo8-6-4 AISI: ~P20


Chemical Composition

0.38 0.30 1.50 2.00 0.20 1.10

Chemical composition (average %)

Available product shapes

  • 6-Side Machining
  • Flat Bar
  • Ground Flat
  • Long Products
  • Plates
  • Ready Pieces
  • Round Bar
  • Round Ground Bar
  • Standard Bar

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