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White 10-18 Karat Casting Alloy - Otto Frei

Ultra White 9-18 Investment Casting Master Alloy

Part # 846-140

Single unit weight: -- lbs / -- kg

$9.35 - $9.35
$9.35
$9.35 - $9.35
$9.35
Availability:
10 in stock, ready to be shipped
by Otto Frei

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Product Details

Ultra White 9-18 Investment Casting Master Alloy-Contains No Gold-Per Troy Ounce (20DWT)

Contains:
CU 57%

Zn 21%

Ni 22%

Note: There are proprietary metals in the formulation which are not included in the composition section.  May also contain silicon and deoxidizers.

Sold by the troy ounce (20 pennyweights or 31.1 grams).

 

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 10K  1060C - 1080C / 1940F - 1976F

Pre- Alloying (Fine gold + alloy) Temperature 14K-18K  1050C - 1060C / 1922F - 1940F

Step : 2

Casting Temperature for 10K Alloyed Grain 1055C - 1075C  / 1931F - 1967F

Casting Temperature for 14K Alloyed Grain 1015C - 1035C  / 1859F - 1895F

Casting Temperature for 18K Alloyed Grain  990C - 1010C  / 1814F - 1850F

 

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 540 C to 675 C / 1004° F – 1247° 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 – 12 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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