Block Mould Steel Selection: Structure and Wear

Block mould steel selection starts with the job of each component. Review the supporting frame, cavity surfaces and forming components separately, using the approved drawing and production conditions. A material suitable for one position may require a different specification when geometry, loading or manufacturing operations change.

Match properties to the component

Ovako's steel comparison guidance includes mechanical properties, hardenability, weldability and machinability. These are useful review criteria for a mould project, alongside the component dimensions and expected wear conditions. A grade name alone does not describe every property needed for the finished part.

• For supporting components, identify the loading assumptions, connections and dimensional requirements stated on the drawing.
• For contact surfaces, describe the aggregate, forming geometry and observed wear pattern rather than requesting hardness alone.
• For machined or welded parts, confirm the intended delivery condition and the steel supplier's processing guidance.

Define a checkable specification

Record the material designation, applicable specification, delivery condition and required inspection evidence. If an alternative grade is proposed, compare the relevant properties and processing requirements before approving it. Material substitution should be assessed together with the design, rather than accepted solely because the quoted hardness looks similar.

Prepare the project information

Provide the block drawing, machine interface details and current production concerns for the material review. The resulting order specification should identify which material requirements apply to which components. This makes quotation comparisons clearer and gives incoming inspection a defined basis for checking the supplied steel.