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Professional-grade silver casting grain sold by the troy ounce (20 DWT). Choose from four distinct alloys — Sterling Silver, Fine Silver, Argentium® 940 PRO, and Tarnish-Resistant Sterling — each engineered for jewelry casting with different balances of purity, durability, and tarnish resistance. Whether you require the traditional performance of .925 sterling or the enhanced firescale resistance of modern casting alloys, these grains are formulated to meet the demands of professional jewelers and metalsmiths.
Features
- Four alloy options to suit a range of casting requirements
- Sold by the troy ounce (20 DWT) for precise, flexible purchasing
- Sterling Silver (.925) delivers traditional casting performance
- Fine Silver (.999) offers maximum purity for high-purity applications
- Argentium® 940 PRO is designed specifically for modern investment casting with tarnish and firescale resistance
- Tarnish-Resistant Sterling provides .925 composition with added deoxidizers to reduce tarnishing and firescale
Specifications
| Sold By | Troy ounce (20 DWT) |
|---|---|
| Product Form | Casting grain |
| Available Alloys | Sterling Silver, Fine Silver, Argentium® 940 PRO, Tarnish-Resistant Sterling |
Available Options
| Part # | Type | Composition | Melting Point | Specific Gravity | Notes |
|---|---|---|---|---|---|
| 844-90 | Sterling Silver | .925 silver / .075 copper | 1645°F (896°C) | 10.36 | Traditional sterling; cubic inch ≈ 5.457 ozt |
| 844-92 | Tarnish-Resistant Sterling Silver | .925 silver + copper + deoxidizers | 1645°F (896°C) | 10.36 | Resists tarnishing and firescale; similar to Argentium® |
| 844-95 | Argentium® 940 PRO | .935 silver + copper + deoxidizers | 1670°F (910°C) | 10.30 | Tarnish and firescale resistant; designed for modern investment casting |
| 844-99 | Fine Silver | .999 pure silver | 1761°F (961°C) | 10.49 | Highest purity; cubic inch ≈ 5.525 ozt |
Notes
No silver alloy is completely non-tarnishing. Tarnish-resistant alloys provide significantly reduced cleaning and maintenance compared to standard sterling, but some degree of tarnishing may still occur over time.
California Prop 65 Warning:Cancer and Reproductive Harm. www.P65warnings.ca.gov.
- Brand
- Otto Frei
- Part #
- 844-90
- Type
- Metal Stocks
- Country of Origin
- United States
- Dimensions
- 1 in x 1 in x 0.25 in
- Sold By
- Troy ounce (20 DWT)
- Product Form
- Casting grain
- Available Alloys
- Sterling Silver, Fine Silver, Argentium® 940 PRO, Tarnish-Resistant Sterling
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