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Premium White 9-18 Silicon Free Casting Master Alloy-Per Troy Ounce (20DWT) - Otto Frei

Premium White 9-18 Silicon Free Casting Master Alloy-Per Troy Ounce (20DWT)

Part # 846-900
$8.60 - $8.60
$8.60
$8.60 - $8.60
$8.60
Availability:
8 in stock, ready to be shipped
by Otto Frei

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Product Details

Premium White 9-18 Silicon Free Casting Master Alloy-Contains No Gold-Per Troy Ounce (20DWT)

Contains:
CU 55%

Zn 20%

Ni 25%

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  1100C - 1120C / 2012F - 2048F

Pre- Alloying (Fine gold + alloy) Temperature 14K-18K  1050C - 1070C / 1922F - 1958F

Step : 2

Casting Temperature for 10K Alloyed Grain 1095C - 1115C  / 2003F - 2039F

Casting Temperature for 14K Alloyed Grain 995C - 1015C  / 1823F - 1859F

Casting Temperature for 18K Alloyed Grain  985C - 1005C  / 1805F - 1841F

 

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 to pick-up 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: 20 – 30 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.





Warning: Cancer and Reproductive Harm www.P65warnings.ca.gov.

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