Gold foil in rolls, grades Zl 99.99 and Zl 99.9, per TU 117-1-287-98

The item is identified as gold foil of specified strength, supplied in rolls. The manufacturer’s catalog associates it with grades Zl 99.99 and Zl 99.9 and TU 117-1-287-98.

Product type

The typical image of gold material does not show the actual roll and does not allow determination of thickness. Therefore, only the confirmed form of supply, two possible grades, and the document are recorded; dimensions and strength are taken from the specification.

Characteristics

• Type: foil of specified strength in rolls
• Grades: Zl 99.99 and Zl 99.9
• Gold: not less than 99.99% or 99.90% by mass
• Document: TU 117-1-287-98 «Gold foil of specified strength in rolls»

Foil in a roll is a thin flat semi-finished product, and the specified strength refers to the requirements of the specific TU. The gold grade does not determine thickness, width, edge condition, or mechanical properties. The variants Zl 99.99 and Zl 99.9 differ in the minimum content of the base metal and must be separated in the order and quality document.

Applications

• manufacture of thin conductive and protective elements after checking thickness and surface;
• cutting of roll material for technical parts according to an approved cutting plan;
• research work with high-purity foil with separate accounting of grades;

What to agree when ordering

Choose Zl 99.99 or Zl 99.9 and specify thickness, roll width, length or mass, tensile strength, surface and edge condition. Request tolerances, winding direction, core material, packaging, and quality document. For further cutting, soldering, or coating, agree on flatness, surface cleanliness, and allowable defects.

Safety and storage

Thin foil is easily wrinkled, can cut unprotected hands with its edge, and may be damaged by uneven unwinding. Work with clean tools and gloves that do not contaminate the surface. Protect the roll from creases, moisture, and aggressive vapors. Collect trimmings separately; heating, soldering, and chemical treatment should be performed only according to the process sheet and safety data sheet.