Vanadis 4 Extra

Metallurgical Structure

Rapid solidification of atomized metal powder eliminates macro-segregation of alloying elements, creating microstructures free from heavy carbide stringers. High vanadium and molybdenum content forms hard vanadium nitrides and carbides dispersed evenly throughout the tempered martensitic matrix. In Vanadis 4 Extra, fine carbide dispersion yields superior toughness compared to conventional ingot-cast tool steels like AISI D2 at equivalent hardness levels.

Heat treatment procedures achieve working hardness levels between fifty-eight and sixty-four Rockwell C scale.

Tool Wear Resistance

Continuous erosion from high-velocity glass fibers degrades gating areas and core pins, causing dimensional drift and part flashing over time. High hardness and dense vanadium carbide phase content resist adhesive and abrasive wear mechanisms during long production campaigns. Utilizing Vanadis 4 Extra in high-wear mold zones reduces maintenance downtime and frequency of insert replacement.

Excellent ductileness prevents catastrophic cracking along sharp internal mold corners subject to high injection pressure peaks.

Machinability Profile

Powder metallurgy steels exhibit consistent response to electrical discharge machining and wire cutting operations due to isotropic material properties. Polishing performance is superior to conventional tool steels, allowing mold polishers to achieve mirror-finish surface qualities suitable for optical parts. Utilizing Vanadis 4 Extra provides predictable heat treatment response with minimal dimensional movement, simplifying final precision grinding steps.