Physical
Properties |
Units |
Typical
Values
SA |
Composition
(phases) |
- |
SiC |
Density |
G/cm3 |
3.10 |
Grain
Size |
microns |
4-6 |
Hardness
(Knoop) |
- |
2800 |
Flexural
Strength
4pt @ RT |
MPa
x103lb/in2 |
460
60 |
Compressive
Strength @ RT |
MPa
x103lb/in2 |
3900
560 |
Modulus
of
Elasticity @ RT |
GPa
x106lb/in2 |
410
59 |
Weibull
Modulus
(2 parameters) |
- |
10 |
Poisson
Ratio |
- |
0.14 |
Fracture
Toughness @ RT
Double Torsion & SENB |
MPa/m
x103lb/in2/sqrt in. |
4.60
4.20 |
Coefficient
of
Thermal Expansion
RT to 700¡ÆC |
x10-6mm/mm°K
x10-6in/in¡ÆF |
4.02
2.20 |
Max.
Service
Temperature (air) |
¡ÆC
¡ÆF |
1650
3000 |
Mean
Specific Heat @RT |
J/gm°K |
0.67 |
Thermal
Conductivity
@RT
@200¡ÆC
@400¡ÆC
|
W/mK
BTU/ft h¡ÆF |
125.6
72.6
102.6
59.3
77.5
44.8 |
Permeability,
RT to 1000¡ÆC |
Impervious
to gases over 31 MPa. |
Electrical
Resistivity
@RT
@1000¡ÆC |
ohm-cm |
102 - 106
0.01 - 0.2 |
Emissivity |
- |
0.9 |