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Medium White For Making 9-18 Karat White Fabrication Alloy - Otto Frei
Otto Frei

Ultra White For Making 10-18 White Multi-Purpose Alloy-Per Troy Ounce (20 DWT)

Part # 846-103 10 In Stock Weight <0.1 lb / <5 g
$8.50

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Description

This ultra white fabrication alloy is nickel-based and contains no gold and no silver. Designed as a multi-purpose master alloy for both casting and fabrication applications, it is suitable for making white gold alloys from 10K through 18K. Sold by the troy ounce (20 DWT).

Note: There are proprietary metals in the formulation that are not included in the composition listing below.

Features

  • Nickel-based multi-purpose alloy for casting and fabrication
  • Compatible with white gold alloys from 10K to 18K
  • Contains no gold and no silver
  • Pre-alloying with aggressive stirring and fluxing recommended for a uniform mixture
  • Boric acid is the recommended flux — do not use carbon fluxes or refining fluxes such as soda ash or saltpeter
  • Avoid flux in bottom-pour automatic casting units

Specifications

Composition – Copper (Cu) 63%
Composition – Zinc (Zn) 17%
Composition – Nickel (Ni) 19.5%
Composition – Silver (Ag) 0%
Contains Gold No
Base Metal Nickel
Karat Range 10K – 18K
Application Casting and fabrication
Sold By Troy ounce (20 DWT)

Usage Guidelines

  1. Pre-Alloying (Fine gold + alloy): Heat to 1090°C – 1100°C / 1994°F – 2030°F with aggressive stirring and fluxing to ensure a uniform mixture.
  2. Casting Temperature for 10K Alloyed Grain: 1085°C – 1105°C / 1985°F – 2021°F
  3. Casting Temperature for 14K Alloyed Grain: 1025°C – 1045°C / 1877°F – 1913°F
  4. Casting Temperature for 18K Alloyed Grain: 995°C – 1015°C / 1832°F – 1859°F

Notes

  • Melt temperature may vary depending on the type of casting unit used.
  • Flask Temperature: Recommended range is 540°C – 675°C / 1004°F – 1247°F, depending on flask size, karat, and jewelry type.
  • Quench Time: 25 minutes.
  • Investment Removal: Most standard investment removers will successfully remove investment powder. Aggressive acids are not recommended, as they cause stress corrosion and surface damage.
  • Scrap Reuse: A 70% fresh – 30% scrap mix is recommended. White gold alloy has approximately one-third the reusability of yellow gold alloys.
  • This product contains nickel. See applicable Proposition 65 warnings.

Specifications

Brand
Otto Frei
Part #
846-103
Type
Alloys
Dimensions
2 in x 1 in x 0.38 in
Composition – Copper (Cu)
63%
Composition – Zinc (Zn)
17%
Composition – Nickel (Ni)
19.5%
Composition – Silver (Ag)
0%
Contains Gold
No
Base Metal
Nickel
Karat Range
10K – 18K
Application
Casting and fabrication
Sold By
Troy ounce (20 DWT)

Documents

Specs, manuals, and certificates for this product. All files open in a new tab.

Casting Alloys, Solders and Precious Metals Safety Data Sheet SDS · 282 KB · 12 pages
California Prop 65 Warning California Prop 65 Warning:
This product can expose you to chemicals including nickel, which is known to cause cancer. www.P65warnings.ca.gov.

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