Superplast® 2738 mod. HH

Premium mould steel that meets or exceeds standards for grades W 1.2738HH.

Material properties Prehardened steel for medium and very large – size moulds and tools with good machinability. Consistent texturing and polishing improved by very low sulphur content. Reliable repair welding and good thermal conductivity.

For which tools
Plastic injection mould cores and cavities, large – size moulds for bumpers, dashboards, fenders, television panels, bottle crates, etc.

For which plastics
Thermoplastics, thermosetting plastics, ABS, transparent melts. Injection moulding, compression moulding, RIM moulding, etc.

Chemical analysis

Typical values (weight%).

C Si S Ni Cr Mo V B
0.26 0.10 0.002 0.30 1.70 0.52 0.05 +

Mechanical properties

Superplast® 2738 mod. HH is delivered quenched and tempered to 330 – 360 HB (34 – 38 HRC).

Test thickness Test hardness Yield strength Tensile strength
400 mm 345 HB 940 N/mm² 1095 N/mm²

Delivery conditions

Typical delivery sizes

Manufacturing process Thickness Width
Hot rolling 15 – 150 mm 1000 – 2000 mm
Hot forging 150 – 1200 mm 1200 – 2000 mm

For more technical details :


Superplast® 2738 mod. HH

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.