Stamped blank for watch case from ZlSrM 585-200 alloy

Stamped blank for watch case from ZlSrM 585-200 alloy — a product made from the gold–silver–copper alloy system, grade ZlSrM 585-200. The composition and supply document have been verified against the manufacturer’s nomenclature catalog.

• Grade: ZlSrM 585-200.
• Gold: 58.5–59.0% by mass.
• Silver: 19.5–20.0% by mass.
• Copper: balance.
• Regulatory document: TU 1995-804-05785324-2005.

Dimensions, tolerances, delivery condition, packaging, and batch size must be agreed upon 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 the alloying system. Additives alter the technological behavior, mechanical, and contact characteristics of the material, so grades with similar names should not be substituted for one another. For this item, the composition and regulatory document are provided according to a verified nomenclature source.

Selection of shape and execution

When ordering a semi-finished product, the grade, full composition, geometry, and delivery condition are considered. For wire, the 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 the chemical composition. It must comply with the regulatory document and the customer’s design requirements.