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Momentive Performance Materials BNC1 Boron Nitride (BN) Refractory Composite

Category Ceramic , Nitride
Manufacturer Momentive Performance Materials (Former GE Advanced Ceramics)
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Momentive Performance Materials BNC1 Boron Nitride (BN) Refractory Composite.pdf
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Material Notes:
Boron Nitride is a unique engineering material. It is a soft, machinable ceramic which can be combined with other refractory ceramics including Aluminum Oxide, Silicon Nitride, Aluminum Nitride, Mullite and Titanium Diboride. This results in composites which are machinable, thermal shock resistant, and chemically compatible in a wide range of environments. In combination with Titanium Diboride, for example, BN can be used as a heating source for the aluminum metallization of films and papers. BN composites are also used as break-rings in the horizontal continuous castings of steel and nozzles in rapid solidification processes. Other composite applications include the following: High temperature refractory shapesGlass forming tools and refractoriesMolds, dies and refractories for metalformingFurnace vents, stacks and fixturesGrades BNC 1 & 2 offer excellent corrosion and wear resistance, have excellent thermal shock capability and low CTE, are non-wetting and are self lubricating.Information provided by Momentive Performance Materials, formerly GE Advanced Ceramics.
Physical Properties Metric English Comments
Density 2.24 g/cc
0.0809 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell A 71
71
No Scale Listed, Parallel
82
82
No Scale Listed, Perpendicular
Modulus of Elasticity 10.3 GPa
1500 ksi
Parallel
62.1 GPa
9000 ksi
Perpendicular
Flexural Strength 18.6 MPa
2700 psi
Parallel
67.6 MPa
9800 psi
Perpendicular
13.8 MPa

@Temperature 1500 °C
2000 psi

@Temperature 2730 °F
Parallel
40.7 MPa

@Temperature 1500 °C
5900 psi

@Temperature 2730 °F
Perpendicular
Compressive Strength 92.4 MPa
13400 psi
Parallel
112 MPa
16200 psi
Perpendicular
Coefficient of Friction, Dynamic 0.62
0.62
pin-on-disk at 450° C in argon, nickel static substrate, sliding velocity 0.5m/sec, 2N load, Parallel
0.62
0.62
pin-on-disk at 450° C in argon, nickel static substrate, sliding velocity 0.5m/sec, 2N load, Perpendicular
Abrasion 0.023
0.023
mm<sup>3</sup>/N/m, Wear Rate, Parallel
0.044
0.044
mm<sup>3</sup>/N/m, Wear Rate, Perpendicular
Thermal Properties Metric English Comments
CTE, linear 5.20 µm/m-°C

@Temperature 20.0 °C
2.89 µin/in-°F

@Temperature 68.0 °F
Parallel
CTE, linear, Transverse to Flow 8.80 µm/m-°C

@Temperature 23.0 °C
4.89 µin/in-°F

@Temperature 73.4 °F
Thermal Conductivity 14.1 W/m-K
97.9 BTU-in/hr-ft²-°F
Parallel
15.7 W/m-K
109 BTU-in/hr-ft²-°F
Perpendicular
5.00 W/m-K

@Temperature 1500 °C
34.7 BTU-in/hr-ft²-°F

@Temperature 2730 °F
Parallel
5.60 W/m-K

@Temperature 1500 °C
38.9 BTU-in/hr-ft²-°F

@Temperature 2730 °F
Perpendicular
9.70 W/m-K

@Temperature 500 °C
67.3 BTU-in/hr-ft²-°F

@Temperature 932 °F
Parallel
11.4 W/m-K

@Temperature 500 °C
79.1 BTU-in/hr-ft²-°F

@Temperature 932 °F
Perpendicular
Maximum Service Temperature, Air 950 °C
1740 °F
Oxidizing
Maximum Service Temperature, Inert 1600 °C
2910 °F
Inert/Vacuum
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