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White 10-18 Karat Casting/Rolling Alloy - Otto Frei

White 9-18 Investment Casting Master Alloy-Per Troy Ounce (20DWT)

Part # 846-100

Single unit weight: -- lbs / -- kg

$7.74 - $7.74
$7.74
$7.74 - $7.74
$7.74
Availability:
7 in stock, ready to be shipped
by Otto Frei

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Product Details

This white alloy is nickel based and contains copper, nickel and zinc.  Recommended for investment casting and fabrication. Previously called White Century.  Sold by the Troy Ounce (20 pennyweight/31.1 grams).

Content:

Cu 57.7%

Zn 18.1%

Ni  24.2%

 

Note: There are proprietary metals in the formulation which are not included in the composition section.

 

846-100 nickel based white alloy is specially formulated for peak performance in enclosed or automated casting equipment. This alloy may be used for 9 K – 18 K white gold casting, which produces a White finished color. This alloy contains a small amount of silicon as a deoxidizer.

You should obtain excellent results by following a few simple instructions.
We do recommend pre-alloying all alloy and fine gold with aggressive stirring & fluxing to assure a uniform mixture.

 

Step : 1 

Pre- Alloying (Fine gold + alloy) Temperature 1050C - 1060C / 1922F - 1940F

Step : 2

Casting Temperature for 9 K – 10 K Alloyed Grain 1030C - 1040C  / 1886F - 1904F

Casting Temperature for 14 K – 18 K Alloyed Grain 1000C - 1020C  / 1832F - 1868F

 

NOTES: Melt temperature may vary with type of unit. This alloy is designed for casting and fabrication application.

 

Flask Temperature: Normal recommended temperature in the range of 580 C to 700 C / 1076° F – 1292° F depending on size of flask, karat & type of jewelry.

Fluxing white gold is extremely important for collecting oxides. Boric Acid is the recommended flux. Do not use carbon fluxes or any fluxes designed for refining; i.e., soda ash, saltpeter, etc. Avoid flux in bottom pour automatic casting units.

Quench Time: 10 – 15 minutes.

Investment Removal: Most standard investment removers will successfully remove the investment powder. Use of aggressive acids causes stress corrosion and surface damage and is therefore not recommended.
 

Removal: We recommend a 70% fresh - 30% scrap mix. White gold alloy has about 1/3 the reusability of yellow gold alloys.



 

California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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