Superplast® 400

Premium mould steel that meets or exceeds standards for grades W 1.2711 and W 1.2714.

Material properties
40 HRC prehardened steel for medium and large – size moulds and tools with high wear resistance. Consistent texturing and polishing improved. Reliable repair welding and high dimensional stability.

For which tools
Plastic injection mould cores and cavities, large – size moulds, compression dies under high mechanical and thermal stresses.

For which plastics
Thermoplastics, long fibre reinforced thermoplastics (LFT), thermosetting plastics, ABS, transparent melts. Injection moulding, compression moulding, RIM moulding, etc.

Chemical analysis

Typical values (weight%).

C Mn Si Ni Cr Mo Others
0.25 1.15 0.1 0.75 2 0.6 B,V

Mechanical properties

Superplast® 400 is delivered quenched and tempered to 350 – 380 HB (37 – 41 HRC).

Hardness Rp 0.2 yield Strength Rm Tensile Strength KCV 20°C Elastic modulus
HB MPa ksi MPa ksi J GPa ksi
370 1000 145 1215 176 20 205 29733

Dimensional program

Typical delivery sizes

Manufacturing process Thickness Width
Hot rolling 15 – 150 mm 1000 – 2500 mm
Hot forging 150 – 610 mm 1000 – 2000 mm

For more technical details :


Superplast® 400

Download the complete datasheet

Technical data and information are to the best of our knowledge at the time of publication. However, they may be subjected to some slight variations due to our ongoing research programmes. Therefore, we suggest that information be verified at time of enquiry or order. Furthermore, in service, real conditions are specific for each application. The data presented here are for the purpose of description only, and can be considered as guarantees only when written formal approval has been provided by our company. Industeel reserves the right to change its product range at any time without prior notice.