Morgan Advanced Ceramics G-3 Ceramic Core Material Silica

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Morgan Advanced Ceramics G-3 Ceramic Core Material Silica
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	General core type with an intermediate particle size distribution for Equiax castings. Formulated to be used for large land-based type cores that require good stability at elevated temperatures and for chunky airfoil cores up to 30 inches long, 8 inches wide, and 1 inch thick Information provided by Morgan Advanced Materials
Key Words:	G-3
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Physical Properties	Original Value	Comments

Bulk Density	1.90 g/cc
Density	2.60 g/cc
Water Absorption	>= 15 %
Open Porosity	28 %

Mechanical Properties	Original Value	Comments
Modulus of Rupture	1.60 ksi	4 point

Thermal Properties	Original Value	Comments
CTE, linear	1.50 µm/m-°C @Temperature 25.0 - 1000 °C
Shrinkage	0.60 %	length, mold-to-fired
	0.80 %	chord, mold to fired

Component Elements Properties	Original Value	Comments
Antimony, Sb	>= 0.0025 %	trace element, 25 ppm
Bismuth, Bi	>= 0.00010 %	trace element, 1 ppm
Iron, Fe	>= 0.090 %	trace element, 900 ppm
Lead, Pb	>= 0.0025 %	trace element, 25 ppm
Other	30 %	ZrSiO4
Silver, Ag	>= 0.0025 %	trace element, 25 ppm
SiO2	70 %
Tin, Sn	>= 0.0025 %	trace element, 25 ppm
Zinc, Zn	>= 0.0050 %	trace element, 50 ppm

Descriptive Properties
Cristobalite Content	2 percent, after fire
	6 percent after 15 min at 1390°C
Leachability	100 percent, 30 percent boiling KOH, 30 g sample, 30 minutes

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CMORF5091 / 200328

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