Stamped blank for watch case from ZlSrM 750-150 alloy

Stamped blank for watch case from ZlSrM 750-150 alloy — a product made from the gold–silver–copper alloy system grade ZlSrM 750-150. Composition and supply document are verified against the manufacturer’s nomenclature catalog.

• Grade: ZlSrM 750-150.
• Gold: 75.0–75.5% by mass.
• Silver: 14.5–15.5% by mass.
• Copper: balance.
• Regulatory document: TU 1995-804-05785324-2005.

Dimensions, tolerances, delivery condition, packaging, and batch size must be agreed before ordering. For non-standard execution, confirmation of technical parameters is required.

Material features

Gold alloys are selected not only by gold content but also by alloying system. Additives change the technological behavior, mechanical and contact characteristics of the material, so similar-sounding grades should not be substituted for one another. For this item, composition and regulatory document are provided from a verified nomenclature source.

Selection of shape and execution

When ordering a semi-finished product, consider the grade, full composition, geometry, and delivery condition. For wire, diameter and length tolerances are critical; for foil and strip, thickness, width, and flatness; for solder, the shape of the blank and compatibility with the joining technology. Required parameters are specified in the specification.

Applications

The field of application is determined by the combination of grade and product form. Gold alloys are used in electrical, contact, instrumentation, technological, and jewelry applications, but the specific purpose cannot be inferred solely from chemical composition. It must comply with the regulatory document and the customer’s design requirements.