Alloys For Karat Gold

The following alloy table indicates recommended karat usages, alloy melting temperatures, and resulting karat gold melting temperatures.

Yellow and Green Alloys

The yellow and green alloys are listed in order of increasing silver content. The silver content is very influential on the color of the karat gold produced; low silver content yields reddish colors and higher levels yield greener colors.

Yellow Alloys

Designation
Recommended Karat Use
Alloy Liquidus Temp ºF (ºC)
10Kt. Gold Liquidus Temp ºF (ºC)
14Kt. Gold Liquidus Temp ºF (ºC)
18Kt. Gold Liquidus Temp ºF (ºC)
#711
10,14
1830 (1000)
1625 (885)
1615 (880)
#257
10,14
1710 (932)
1590 (885)
1570 (855)
#50
10,14
1740 (950)
1600 (870)
1575 (857)
#205
10,14
1725 (940)
1580 (860)
1575 (857)
#332
10,14
1715 (935)
1555 (845)
1545 (840)
#201
10,14
1670 (910)
1550 (843)
1550 (843)
#1
10,14,18
1705 (930)
1565 (850)
1560 (850)
1600 (870)
#209
10,14,18
1660 (905)
1545 (840)
1540 (840)
1580 (860)
#340
10,14,18
1740 (950)
1605 (875)
1605 (875)
1635 (990)
#208
10,14,18
1630 (890)
1525 (830)
1555 (845)
1635 (890)
#216
10,14,18
1580 (860)
1500 (815)
1545 (840)
1645 (895)
#352
10,14,18
1620 (880)
1525(830)
1520 (827)
1560 (580)
#10
18
1555 (845)
1585 (863)

   GHS SDS

Green Alloys

Designation
Recommended Karat Use
Alloy Liquidus Temp ºF (ºC)
10Kt. Gold Liquidus Temp ºF (ºC)
14Kt. Gold Liquidus Temp ºF (ºC)
18Kt. Gold Liquidus Temp ºF (ºC)
#20
10
1500 (815)
1430 (775)
#120
14,18
1510 (820)
1560 (850)
1685 (920)
#202
14,18
1455 (790)
1610 (875)
1725 (940)
#219
14,18
1440 (780)
1615 (880)
1740 (950)
#204
14,18
1425 (775)
1635 (890)
1740 (950)
#355
14,18
1510 (820)
1695 (925)
1774 (970)

   GHS SDS

White Alloys

The white alloys are listed in order of increasing nickel content. The alloy’s nickel content is most influential in resulting karat gold properties and color. As the nickel content increases, the whiteness, strength, and hardness increase. The alloys listed offer the optimum balance between color and workability.

Nickel Free White Alloys are available for 10K, 14K, and 18K, and conform to European Nickel Standards, are non-allergenic, and avoid the risk of stress corrosion.

Designation
Recommended Karat Use
Alloy Liquidus Temp ºF (ºC)
10Kt. Gold Liquidus Temp ºF (ºC)
14Kt. Gold Liquidus Temp ºF (ºC)
18Kt. Gold Liquidus Temp ºF (ºC)
#315
10,14
2020 (1105)
1800 (985)
1675 (915)
#314
10,14
2015 (1100)
1815 (990)
1700 (925)
#612
10,14
2090 (1145)
1850 (1010)
1735 (945)
#318
10,14
2100 (1150)
1855 (1015)
1735 (945)
#601
10,14
2130 (1165)
1880 (1025)
1750 (955)
#319
10,14
2140 (1170)
1895 (1035)
1775 (970)
#411
18
2165 (1185)
1670 (910)

   GHS SDS

Pink (Rose) Alloys

Designation
Recommended Karat Use
Alloy Liquidus Temp ºF (ºC)
10Kt. Gold Liquidus Temp ºF (ºC)
14Kt. Gold Liquidus Temp ºF (ºC)
18Kt. Gold Liquidus Temp ºF (ºC)
#304
10,14,18
1950 (1065)
1710 (932)
1775 (970)
1850 (1010)

   GHS SDS

Casting

Alloys are also available with silicon and boron deoxidizers which produce brighter, smoother castings with less porosity.

Deoxidized alloys are only recommended for casting applications.

Stone In Casting

A number of our alloys are suitable for casting with stones.

Enamel Alloys

High quality enameling is achieved with the following zinc-free alloys: #340, #208, #216, #120, #219, and #355.

Age Hardening Alloys

For pins, snaps, posts, clasps, locks, and other manufacturing applications requiring hardness and higher tensile strength: #208, #216, and #202.

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