BÖHLER W302 ISOBLOC

BÖHLER W302 ISOBLOC is a 5% chromium steel and corresponds to material number 1.2344 (X40CrMoV5-1). Produced via the electroslag remelting process (ESR), this tool steel has very high hot toughness as well as very high hot hardness and a very good resistance against heat-checkings. The combination of these properties makes it a top performer in closed- and open-die forging as well as in high- and low-pressure die casting. In addition, this material has very good polishability and is therefore also often used as a molding material for plastic injection molds.

Available Product Shapes

  • Block
  • Long Products
  • Open Die Forgings
  • Plates
  • Round Bars
  • Square
  • Flat Bar (incl. Square Bar)
Long Products:
Presented data refer exclusivly to long products. Please observe the detailed explanations at the end of the data sheet (pdf).

Melting Route

Airmelted + Remelted

General Information

  • Toughness & Ductility: high
  • Wear Resistance: high
  • Machinability: very high
  • Hot Hardness (red hardness): high
  • Polishability: very high
  • Thermal conductivity: good
  • Micro-cleanliness: high

Technical Data

 High temperature toughness
High temperature wear resistance
Machinability in as supplied condition
Polishability

Chemical composition (average %)

C Si Mn Cr Mo V
0.39 0.90 0.40 5.20 1.40 0.95
SEL EN UNS AISI NADCA JIS
1.2344 X40CrMoV5-1 T20813 H13 B1885 SKD61
EN ISO NADCA JIS
4957 #207 G4404

Downloads

W302 ISOBLOC Datasheet
PDF | 3.47 MB
BW015_Hot work tool steel
PDF | 2.39 MB
Welding in tool making
PDF | 494 KB
BW020_Tool steels for the high pressure die casting industry
PDF | 977 KB
BW142_Polishing in Mold Making
PDF | 2.67 MB
BW150_Reinforced Plastics
PDF | 2.21 MB
BL009_Tool Steels, High Speed Steels
PDF | 2.89 MB

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