| C182N1  
| Title 18 Kt | Master alloy for casting of 750‰(18 Kt) yellow gold |  
| --- | --- |

## GENERAL INFORMATION

| Typology | Master alloy for gold |
| --- | --- |
| Production process | Casting |
| Color | Yellow |
| Color shade | Light yellow |
| Density[g/cm3] | 15.1 |
| Melting temperatures |  |
| Solidus[℃] | 845 |
| Liquidus[℃] | 870 |

| Commercial composition |  |
| --- | --- |
| Ag(%) | 49 |
| Cu(%) | 43 |
| Zn(%) | 8 |
|  |  |
|  |  |
|  |  |

## FULL CHARACTERIZATION DATA

| General characteristics |  |
| --- | --- |
| As cast grain size[μm] | 120 |
| Fluidity(grid filling test)[%] | 99 |
| Color coordinates |  |
| L* | 86 |
| a* | 2.4 |
| b* | 21.4 |
| c* | 21.5 |

| Mechanical characteristics |  |
| --- | --- |
| Tensile strength (Rm)[MPa] | 384 |
| Yield strength(Rp0.2)[MPa] | 250 |
| Elongation at rupture(A) [%] | 38 |
| As cast hardness[HV0.2] | 149 |
| Hardness after 70% area red.[HV0.2] | 261 |
| Hardness after annealing[HV0.2] | 144 |
| Single step age-hardening hardness[HV0.2] | 243 |

## PRODUCT APPLICATIONS

| Casting in open systems |
| --- |
| Casting in closed systems |
| Stone-in-place casting |
| Casting without stones |
| Age-hardening |

## RELATED PRODUCTS

| C182D | Higher deoxidizers content |
| --- | --- |
| OG604Z | Mechanical working, 750% light yellow gold |
| LSG406B | Soft solder for 750% yellow gold |
| LSG409V | Medium solder for 750% yellow gold |

---

| TECHNICAL DATASHEET AND GUIDELINE |  |
| --- | --- |
| C182N1  
| Title 18 Kt | Master alloy for casting of 750% (18 Kt) yellow gold |

**CASTING PROCESSING PARAMETERS**

| Casting temperatures | Metal from[℃] | Metal to[℃] | Flask from[℃] | Flask to[℃] |
| --- | --- | --- | --- | --- |
| Thin(below0.5mm) | 970 | 1000 | 650 | 720 |
| Medium(from0.5to1.2mm) | 950 | 970 | 580 | 650 |
| Thick(above1.2mm) | 930 | 950 | 460 | 580 |

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**Trees without stones**  
Let the flask cool down for 10-15 minutes, then quench in water.

**Stone-in-place casting trees**  
Let the flask cool down for 30-45 minutes, then quench in water.

## 3LFNOLQJ

$$
60^{\circ}\mathrm{C}
$$

Dip in RADIAL solution (50 g/l conc. at $ 60^{\circ} \mathrm{C} $ for 2 min.), or in sulphuric acid (10% conc. at $ 50^{\circ} \mathrm{C} $ for 5 min.)

$$
50^{\circ}\mathrm{C}
$$