Hall Mark: 1/20 18K/Stg GF

Description and use:
A layer of 18 karat gold alloy with rich yellow color is bonded to sterling silver to form a sheet of
precious metal with two distinct surfaces for finishing. The gold layer is similar to that of most fold-filled
products and has comparable working characteristics. However such surface treatments as engraving,
scraping, folding and twisting can be used to accent the two surfaces.

Composition:
By Weight: 5.00 18 karat gold alloy, 95.00% Sterling Silver.
By Volume: 3.38% 18 karat gold, 96.62% Sterling Silver.
24 Gauge: .00068 in. thick 18 karat layer
.01942 in. thick Sterling Layer

Melting Point:
18 karat Solidus 1620 °F / 882 °C, Liquidus 1715 °F / 935 °C
Sterling Solidus 1435 °F / 780 °C, Liquidus 1640 °F / 890 °C
Between 1600°F and 1650°F silver side will begin to flow and reticulate below the gold later
Annealing Temperature: 1140 °F to 1300 °F

Soldering:
On Gold surface use – 14 or 18 k yellow EASY (soft) solder.
On Sterling surface use – EASY or MEDIUM silver solder.
Mechanical properties: Similar to sterling

Density:
Specific Gravity (grams per cu.cm) – 10.53718
Ounces per Cubic Inch 5.5516
Ounces per Square Inch – 20 gauge – .17765,

• 24 gauge – .11159

Stock Size:
Sheet – 24 gauge
Sheet: 3″ x 6″