Call Us: (800) 526-6299

Int'l: (201) 933-9696

Email Us

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.

  GHS SDS

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)

Green Alloys

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)


White Alloys

The white alloys are listed in order of increasing nickel content. The alloy’s nickel content is most infuential on 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.

White 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)
#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)

 

Pink (Rose) Alloys

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

Raising & Reducing Chart Karat

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.