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Nyco MD1250 WOLLASTOCOAT® Wollastonite

Category Ceramic , Oxide , Silicon Oxide , Other Engineering Material , Additive/Filler for Polymer
Manufacturer Nyco
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Nyco MD1250 WOLLASTOCOAT® Wollastonite.pdf
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Material Notes:
Wollastonite is a naturally occurring white mineral with an acicular (needle-shaped) particle structure. This distinctive particle morphology makes wollastonite an ideal performance mineral for a broad range of industrial and consumer applications, including polymer reinforcement; coatings; construction/architecture reinforcement; enhancing friction stability in discs, lings, and brakes; and metallurgy.Information provided by NYCO Minerals.
Physical Properties Metric English Comments
Bulk Density 0.720 g/cc
0.0260 lb/in³
Loose
0.910 g/cc
0.0329 lb/in³
Tapped
Density 2.90 g/cc
0.105 lb/in³
Brightness 89 %
89 %
G.E. Brightness
Oil Absorption 25 %
25 %
Solubility in Water 0.0095 %
0.0095 %
Moisture Absorption 0.120 %
0.120 %
Particle Size >= 1.0 µm
>= 1.0 µm
10% smaller than
4.0 µm
4.0 µm
median; Microtrac
<= 12 µm
<= 12 µm
90% smaller than
pH 9.9
9.9
10% Slurry
Specific Surface Area 2.9 m²/g
2.9 m²/g
BET
Molecular Weight 116 g/mol
116 g/mol
Mechanical Properties Metric English Comments
Hardness, Mohs 4.5
4.5
Tensile Strength 2700 - 4100 MPa

@Diameter 0.00300 - 0.150 mm
392000 - 595000 psi

@Diameter 0.000118 - 0.00591 in
Fiber Strength
Modulus of Elasticity 303 - 530 GPa

@Diameter 0.00300 - 0.150 mm
43900 - 76900 ksi

@Diameter 0.000118 - 0.00591 in
Fiber Modulus
Thermal Properties Metric English Comments
CTE, linear 6.50 µm/m-°C
3.61 µin/in-°F
Thermal Conductivity 2.63 - 2.77 W/m-K
18.3 - 19.2 BTU-in/hr-ft²-°F
Melting Point 1410 °C
2570 °F
ASTM D1857
1540 °C
2800 °F
theoretical
Optical Properties Metric English Comments
Refractive Index 1.63
1.63
Component Elements Properties Metric English Comments
Al2O3 0.25 %
0.25 %
CaO 45.72 %
45.72 %
Fe2O3 0.25 %
0.25 %
K2O 0.20 %
0.20 %
Loss on Ignition(%) 6.3 %
6.3 %
MgO 0.71 %
0.71 %
MnO 0.020 %
0.020 %
SiO2 46.52 %
46.52 %
TiO2 0.050 %
0.050 %
Electrical Properties Metric English Comments
Electrical Resistivity 1.30e+13 ohm-cm
1.30e+13 ohm-cm
pure wollastonite
Dielectric Constant 6.8

@Frequency 10000 Hz
6.8

@Frequency 10000 Hz
6.8

@Frequency 100000 Hz
6.8

@Frequency 100000 Hz
6.9

@Frequency 1.00e+6 Hz
6.9

@Frequency 1.00e+6 Hz
6.9

@Frequency 1000 Hz
6.9

@Frequency 1000 Hz
Dissipation Factor 0.00152

@Frequency 1000 Hz
0.00152

@Frequency 1000 Hz
0.0046

@Frequency 10000 Hz
0.0046

@Frequency 10000 Hz
0.0046

@Frequency 1.00e+6 Hz
0.0046

@Frequency 1.00e+6 Hz
0.0078

@Frequency 100000 Hz
0.0078

@Frequency 100000 Hz
Descriptive Properties Value Comments
Appearance White
Bulking Value (gal./lbs.) 0.0413
Minus 400 U.S. Mesh Screen (%) 100
Morphology Acicular
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