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Boron Carbide (B4C)
Properties
Units
Value
Physical
Chemical Formula
-
B4C
Density, r
g/cm3
2.51
Color
-
black or dark gray
Crystal Structure
-
hexagonal
Water Absorption
% @R.T.
ng
Hardness
Vickers @ R.T. (GPa)
36
Hardness
knoop (kg/mm2)
ng
Mechanical
Compressive Strength
GPa @ R.T.
2.9
Tensile Strength
MPa@980þC
155
Modulus of Elasticity
(Young's Mod.)
GPa@ R.T
445
Flexural Strength (MOR)
MPa @ R.T.
375
Poisson's Ratio, u
@R.T.
0.19
Fracture Toughness, KIc
MPa x m1/2
ng
Thermal
Max. Use Temperature
(* denotes inert atm.)
ºC
2450
Thermal Shock Resistance
DT (ºC)
ng
Thermal Conductivity
W/m-K @ R.T.
28
Coefficient of Linear Thermal Expansion, al
10-6 K-1 (~25ºC through ±1000ºC)
5.54
Specific Heat, cp
J kg-1 K-1 @ R.T.
945
Electrical
Dielectric Constant
1MHz @ R.T.
ng
Dielectric Strength
kV/mm
ng
Electrical Resistivity
Wcm @ R.T.
ng

 

 

Typical Analysis
B4C 96.17% min.
B2O3 0.22%
Total Boron

78.55%
Total Carbon 18.5%
Free Boron 0.24%
Free Carbon 1.27%
Al 0.05%
Fe 0.20% max.
pH 7.0
Magnetic Fe 0.0001% max
Specific Gravity 2.50

 

Typical Sizing

Boron Carbide is offered according to FEPA F Available micro grit sizes are: F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200.

Standard macro grit and custom sizes such as: - 200F and -325 F as well as 12, 25 & 45 micron available upon request.

 

The information contained in this document is believed to be accurate and reliable but is presented without guarantee or warranty on the part of Panadyne Inc. Nothing present herein should be interpreted as an authorization or inducement to practice any patented invention without an appropriate license