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NADCA Approval: Internationally Recognized Quality

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When it comes to die casting on a global level, NADCA (North American Die Casting Association) represents a benchmark for the industry. Its authority is demonstrated not only in its support for solving technical challenges but, above all, in defining the criteria for the approval of tool steels for dies. This process is fundamental for certifying high-performance materials, such as our excellent Thermodur grades, thus ensuring reliability and durability over time.

Thermodur die steel by Bonomi Acciai, with NADCA #207 approval certifying its superior quality for die casting applications.

The NADCA #207 approval, “Special Quality Die Steel & Heat Treatment Acceptance Criteria for Die Casting Dies,” is not a simple specification but a recognition that attests to a material’s compliance with the most rigorous requirements established internationally.

This means you can count on:

  • Guaranteed reliability: NADCA-approved steels meet strict tests and controls.
  • Recognized quality: Worldwide visibility and recognition for the steel mill’s brand.
  • International standards: A common language that facilitates collaboration between suppliers and users in global markets.

Bonomi Acciai's NADCA #207 Approved Steels

Tabella di omologazione NADCA #207-2025 che mostra gli acciai per stampi di Bonomi Acciai, inclusi Thermodur® E40K Superclean, E38K e altri, approvati per la pressocolata.

Bonomi Acciai’s materials are NADCA #207 approved, confirming a constant commitment to excellence and the pursuit of solutions that support customers in every production challenge.

Here are the steels from our catalog included in NADCA #207:

  • Thermodur® 2343 EFS Superclean → universal, ideal for large-sized dies.
  • Thermodur® 2344 EFS Superclean → versatile, with excellent resistance to heat and wear.
  • Thermodur® 2367 EFS Superclean → excellent tempering resistance, perfect for castings subjected to high temperatures.
  • Thermodur® E38K Superclean → exceptional toughness, ideal for large die casting dies.
  • Thermodur® E40K Superclean → a premium steel for HPDC, with a superior service life thanks to its resistance to thermal fatigue.

Choosing Bonomi Acciai means choosing certified and internationally recognized quality.

Die casting is a process that requires experience, reliable materials, and technical knowledge.
Bonomi Acciai, the Italian partner of Swiss Steel Group, supports die makers, designers, and foundries in choosing the most suitable material, offering the excellence of its Thermodur® range for every specific need

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Daniele Magistroni

Daniele Magistroni

Powder & Cold Work Tool Steels Application Manager

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