Product characteristics of the SLUMPING-COLORS® grits and powder

Approx. dimensions of the grits and the powder:
< 0,25 mm
0,25 – 0,5 mm
0,5 – 1,0 mm
1,0 –2,4 mm
2,4 – 3,8 mm
3,8 – 5,0 mm
5,0 – 8,0 mm
8,0 –11,5 mm

Color palette SLUMPING-COLORS®:
Currently 101 colors, including crystal and black

Bulk density: Approx. 2.5 to 2.9 t/ m3, depending on color

Typical characteristics values*)

Linear thermal expansion ratio (COE):

96 ± 2 x 10-7/K
Upper cooling point approx.:
> 500 °C – 932 °F
Lower cooling point approx.:
> 440 °C – 824 °F
Transformation temperature (Tg) approx.:
460 °C – 860 °F
Working temperature approx.:
> 850 °C – 1562 °F

*) Reference values of the SLUMPING-COLORS®; they can serve as points of reference and do not constitute guaranteed product characteristics. In individual cases we recommend checking suitability before the application.

Technical information

Effects with SLUMPING-COLORS® colored glasses

Optical color slumping effect:

  • Optical color glasses can be colored differently according to working temperature and kiln type and setting; different color combinations are therefore possible.
  • Very high-performance in terms of color nuances and variations
  • Shiny glass surface can be shown through slow and careful heating of the flame and briefly maintaining this working temperature. Charming color combinations can result depending on the duration and extent of the temperature effect.

Methods to achieve the coloring effect:

Using the color nuances through slumping (by adding temperature, here in the slumping process, slumped glass can take on its actual color).