Melting Route

Airmelted + Remelted

Product Description

BÖHLER K340 ISODUR belongs to the group of 8% chromium steels. This tool steel is produced using the electro-slag remelting (ESR) process developed by BÖHLER. This re-melting technology ensures the lowest micro and macro segregation as well as excellent purity and uniformity of the material. Compared to conventional 12% chromium steels, BÖHLER K340 ISODUR offers significantly better toughness, hardening response and higher resistance to adhesive wear. This material is therefore used in virtually all cold work applications in situations where tool steels like 1.2379 are insufficient in terms of adhesive wear resistance and toughness. K340 ISODUR also features better machinability and reduces the risk of stress cracking during electrical discharge machining.

Property Features

  • Toughness & Ductility: good
  • Wear Resistance: high
  • Compressive strength: good
  • Dimensional stability: good
  • Grindability: very high

Chemical Composition

Chemical composition (average %)
1.10 0.90 0.40 8.30 2.10 0.50 + +

Available product shapes

Information on Long Products ) Presented data refer exclusivly to long products. Please observe the detailed explanations at the end of the data sheet (pdf).

  • Long Products

    Long Products

  • Plates


Fairs & Events


BÖHLER Worldwide

Please choose your market and find your local contact.


Please use a browser that is not outdated.

You are using an outdated web browser.

Errors may occur when using the website.