BÖHLER W300 isobloc
BÖHLER W300 ISOBLOC is a 5% chromium steel and corresponds to material number 1.2343 (X37CrMoV5-1). Produced via the electroslag remelting process (ESR), this tool steel has very high hot toughness as well as good hot hardness and very good resistance against heat-checkings. The combination of these properties makes it a top performer in high- and low-pressure die casting as well as in closed-die and open-die forging. 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
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
Property Features
- Toughness & Ductility: high
- Wear Resistance: good
- English (United Kingdom): very high
- Hot Hardness (red hardness): good
- Polishability: very high
- Thermal conductivity: high
- Micro-cleanliness: high
Material Numbers
- SEL
- 1.2343
- EN
- X37CrMoV5-1
- UNS
- T20811
- AISI
- H11
- NADCA
- D1830
- JIS
- SKD6
Standards
- EN ISO
- 4957
- NADCA
- #207
- JIS
- G4404
Chemical Composition
* Chemical Composition (Average %)
- C
- 0.38
- Si
- 0.90
- Mn
- 0.40
- Cr
- 5.20
- Mo
- 1.30
- V
- 0.45