Dental Lab Silica Quartz Centrifugal Casting Crucibles

• Shape: Boat
• Color: White
• Refractoriness: 1770< Refractoriness< 2000
• Type: Quartz Crucible
• Transport Package: Plywood Case
• Trademark: Gongtao
• Model NO.: GT-0428
• Origin: Shanghai

Product Description

Fused quartz crucibles are made of selected fused silica as the main raw material and processed by
modern ceramic technology. It is mainly used for melting of platinum, gold, medical dental alloys and
other high-temperature alloys. The product has high purity and corrosion resistance. The content of the main component SIO2 is not less than 98%, the content of impurities (K2O, Na2O, Fe2O3) is not greater
than 70Mpa, the thermal shock resistance is high, and the repeated operation of 1100 ºC --water
quenching is more than 10 times, and it is still intact,long life.

Item	Unit	Data
SiO2 Content	wt%	≥99.5
Bulk Density	g/cm3	1.80-1.90
Apparent Porosity	%	14-17
Moh's Hardness		6
Compression Strength Under Normal Temperature	MPA	≥50
Coefficient of Thermal Expansion	×10-6/C	≤0.91
Thermal Conductivity	w/m.C	0.86