Non-Magnetic Carbide Mold Core Insert WC-Ni Alloy Cavity Block with HRA 87-92 Hardness and ±0.002mm Precision for Magnetic-Sensitive Molding

Achieve zero magnetic interference in precision molding with our non-magnetic carbide injection mold core inserts. WC-Ni alloy with HRA 87-92 hardness, µ < 1.002 permeability, and ±0.002mm precision for medical, electronics, and ferrite component manufacturing. Custom designs available.

In the production of magnetic materials—ferrites, bonded magnets, magnetic polymers—the mold itself must be magnetically invisible. Conventional steel molds introduce contamination risks, while standard tungsten carbide (WC-Co) retains unwanted magnetic properties. Our Non-Magnetic Carbide Injection Mold Core Inserts (also known as mold cavity blocks) are engineered specifically for this challenge.

Manufactured from specialized WC-Ni (Tungsten Carbide-Nickel) alloy, these precision components deliver the essential combination of absolute magnetic neutrality, exceptional wear resistance, and micron-level accuracy for demanding injection molding applications in the magnetic materials, medical device, and electronics industries.

By utilizing a nickel-based binder system instead of conventional cobalt, our mold core inserts are completely free of ferromagnetic elements. This delivers:

The science: Nickel (Ni) has a relatively low Curie point, which can be reduced below room temperature through specialized processing, enabling the production of truly non-magnetic cemented carbide materials.

Our non-magnetic carbide grades offer hardness ranging from HRA 86.9 to 92, depending on the specific application requirements:

This balanced formulation provides significantly higher wear resistance than tool steel while maintaining superior toughness compared to harder, more brittle carbides.

Our manufacturing capabilities achieve: