The alloy stomatologic "C", is intended for manufacture of stamps, cast models and other completes which are carrying out auxiliary functions in technological process of manufacturing of dental artificial limbs. The alloy represents a cast material on the basis of bismuth, lead and tin.It has high fluidity, provides conformity of the form and a relief of figure of model on a plaster print and with a good combination of durability, plasticity and deformability in a cold condition. The temperature of fusion does not exceed 105 *Ñ.
The individual complete set includes preparations as the truncated cone a lump 600 (+-) 20 packed into a polyethylene package. Each preparation is designated by a letter "Ñ"
The main properties of alloy:
|Density||- 8,4 g/cm-3 td>|
|Recommended casting temperature||- 1430-1469 *Ñ|
|Tensile strenght||- no less than 450 MPa|
|Yield strenght||- no less than 300 MPa|
|Elongation||- no less than 4%|
|Brinell hardness||- no less than 1500 MPa|
|Thermal factor of linear expansion in an interval of temperatures 20-500 * Ñ||- 13.8*10-6 K -1|