Wedding Ring Blanks from Alloys ZlSrM 958-20, ZlSrM 585-80, and ZlSrPdM 375

This item combines wedding ring blanks from three gold alloys, directly listed in the name of TU 48-1-252-90. These are semi-finished products for subsequent dimensional and decorative processing.

What this item is

The variant ZlSrPdM 375-100-38: gold 37.5–38.0%, silver 9.5–10.5%, palladium 3.5–4.1%, copper — balance. For ZlSrM 958-20 and ZlSrM 585-80, the exact composition and condition must also be specified in the certificate of the selected batch.

Composition and documents

• Grade: ZlSrPdM 375-100-38
• Gold: 37.5–38.0% by mass
• Silver: 9.5–10.5% by mass
• Palladium: 3.5–4.1% by mass
• Copper: balance
• Supply document: TU 48-1-252-90

The gold–silver–palladium–copper alloy has a declared gold fineness of 375 and a separate palladium range. The letters and numbers describe the chemical grade, not the product geometry. Copper makes up the remainder to full mass. For production calculations, the actual batch analysis, material condition, and tolerances of the specific semi-finished product are required.

Applications and technological role

• producing a ring of the required size with allowance for subsequent processing;
• mechanical finishing, polishing, and decoration according to the jewelry production map;
• selecting one of the stated grades according to the fineness, color, and technology of the specific product;

What to agree before ordering

Specify the selected alloy grade, inner and outer diameters, width, cross-section profile, mass, allowances, and surface condition. Request a drawing, actual composition, melt number, and marking rules. Do not combine the three variants in one order line without quantities for each grade. If ZlSrPdM 375 is needed, separately confirm the full designation 375-100-38 and the acceptability of technological operations.

Safety and handling

Protect the surface from contamination by foreign metals. Perform cutting, grinding, and polishing with local exhaust ventilation and eye protection; collect dust and trimmings separately. When heating, use solder and flux only according to proven technology. The safety data sheet and company regulations take precedence.