SRS - Investment Powders: CLASSIC™
Investment powder for 18K and 22K gold
CLASSIC™ is the result of years of Research and Development by SRS and represents the finest quality investment powder currently available. CLASSIC™ uses the highest quality specially graded raw materials all checked against specification by the SRS QC laboratory. It is ideal for casting in 18K and 22K gold.
CLASSIC™ offers the following benefits to the jewellery caster:
- High purity raw materials graded especially for jewellery lost wax casting
- Increased refractoriness gives better thermal shock resistance during burnout and casting
- More user friendly able to perform in a wider set of parameters
- Suitable for all metals especially 18K gold or fine filigree work
- Smoother surface finish - less polishing required
- Includes all wetting and debubbling agents - no need to add before mixing
- Smooth creamy consistency during mixing and pouring
- CLASSIC™ is easy to break our after casting
For full instruction on how to use CLASSIC™ please refer to the mixing and burnout instructions found in every bag or drum.
| Powder/water ratio | 38% |
| Work time @ 22°C | 8 - 9 minutes |
| Initial set time | 10 - 12 minutes |
| Thermal expansion @ 750°C | 0.73% |
| Setting expansion € 2 hours | 0.45% |
| Volume Yield per kg powder | 795ml |
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