The 40M alloy is a yellow gold alloy with a distinctive greenish hue, particularly suitable for 18-22 kt applications in investment casting, where it ensures quality, precision, and a unique aesthetic finish.

Characterized by a bright and marked yellow-green tone, it is ideal for creations that require an original and recognizable color, capable of enhancing the design of the piece.

From a technical standpoint, the alloy offers good fluidity during casting, allowing for uniform filling of molds and accurate reproduction of details, with smooth and well-defined surfaces.

The 40M alloy is particularly suitable for the production of bi- and tricolor objects, where its yellow-green color enables the creation of elegant and dynamic contrasts with white and red gold, enhancing the overall aesthetic of the jewelry piece.

Easy to refine, it is effectively suitable for polishing and surface finishing operations, further improving its brightness and visual quality.

The 40M alloy therefore represents an ideal solution for multicolored gold jewelry and accessories, where chromatic originality, precision in investment casting, and high aesthetic value are required.