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.

Melting Route

Airmelted

Property Features

  • Toughness & Ductility: very high
  • Wear Resistance: good
  • Machinability: good
  • Dimensional stability: good
  • Polishability: very high
  • No heat treatment necessary:
  • Prehardened:

Technical Specifications

Etchability Machinability supplied Polishability Through hardenable Toughness Wear resistance

Material Numbers


1.2738 40CrMnNiMo8-6-4


Standards


4957

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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