3M W-610 Ceramic Microspheres

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3M W-610 Ceramic Microspheres
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	3M™ White Ceramic Microspheres are unique, semi-transparent, white-colored, fine particle size, high-strength microspheres. These products are typically used to reduce VOC levels; increase filler loadings; improve hardness; and add burnish, scrub and abrasion resistance to a variety of coating formulations. Due to the ceramic chemistry of these products, they are also UV transparent down to 250 nm and have utility in radiation-curable and thin-film powder coatings. Information provided by 3M
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Physical Properties	Metric	English	Comments

Bulk Density	1.50 g/cc	0.0542 lb/in³
Density	2.40 g/cc	0.0867 lb/in³
Particle Size	1.0 µm	1.0 µm	10" Percentile
	10 µm	10 µm	50" Percentile
	28 µm	28 µm	90" Percentile
	40 µm	40 µm	95" Percentile
pH	9.0 - 12	9.0 - 12	ASTM E70
Specific Surface Area	3.0 m²/g	3.0 m²/g

Mechanical Properties	Metric	English	Comments
Hardness, Mohs	6.0	6.0
Compressive Strength	>= 414 MPa	>= 60000 psi

Electrical Properties	Metric	English	Comments
Dielectric Constant	3.19	3.19

Thermal Properties	Metric	English	Comments
Thermal Conductivity	2.30 W/m-K	16.0 BTU-in/hr-ft²-°F
Softening Point	1020 °C	1870 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.53	1.53	Predominant, Becke Line

Descriptive Properties
Color	White
Oil Absorption	28 gm oil/100cc microspheres
Whiteness	95		Hunter, "L" Value, ASTM D2244

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PMM33035 / 167782

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