EDRO’s proprietary pre-hardened free machining 400 series stainless steel developed for improved plastics mold base tooling, offering excellent machinability and superior dimensional stability.

Plastic Injection Molding

Plastic Extrusion

Rubber Molding

Blow Molding

RoyAlloy was developed by EDRO to provide superior performance in all important areas of manufacturing and operation for the plastic and rubber mold tooling industries. Extensive machining trials have shown that this material is readily machined, provides excellent surface finishes and thread quality. Special production procedures provide superior surface quality and flatness. Bend tests have demonstrated that this material can tolerate moderate amounts of cold flattening without breakage. Heat treating and microstructure of the material provides excellent dimensional stability after machining, without need for stress relieving or grinding stock.  RoyAlloy is also suitable for photoetching and is safe and easy to weld.

Globally available in all major tooling markets across North America, Europe, and Asia

Characteristics

RoyAlloy is a 400 series martensitic stainless steel supplied pre-hardened ~32HRC (300HB).

  • Excellent machinability
  • Good corrosion resistance
  • Uniform and consistent hardness in all dimensions
  • Good compressive strength
  • Excellent ductility and toughness
  • Dimensionally stable
  • Excellent surface finish and threads
  • Good weldability
Technical Specifications

Corrosion Resistance

Machinability Supplied

Polishability

Toughness

Wear Resistance

Applications
  • Plastic and rubber molds
  • Plastic mold bases
  • Blow mold inserts
  • Constructional parts
  • Plastic extrusion
  • Components / Non-tooling application
Executions
  • Round Bar
    • Saw Cutting
  • Flat Plate
    • Saw Cutting
    • 6 Side Processing
    • Surface Grinding
    • Gun Drilling
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