|
Hard Face Material |
Hardness |
Elastic Modulus E |
Tensile Strength |
Thermal Expansion |
Thermal Conductivity |
Density |
Temperature Limit |
Coeff.of Friction |
|
Mohs |
GN/m2 |
MN/m2 |
µm/mK |
Watts/m°K |
mg/mm3 |
°C(a) |
vs. Carbon |
|
|
Gray cast iron |
5 |
100 |
200 |
10 |
45 |
7.2 |
200 |
- |
|
Hastelloy "B" |
6 |
230 |
1300 |
18 |
45 |
8.9 |
800 |
- |
|
M-2 Tool steel |
7 |
200 |
2000 |
11 |
25 |
8.2 |
500 |
- |
|
Niresist |
4 |
100 |
400 |
18 |
15 |
7.4 |
500 |
- |
|
316 Stainless |
4 |
200 |
600 |
16 |
16 |
8 |
600 |
- |
|
440C Stainless |
5 |
200 |
800 |
10 |
25 |
7.8 |
600 |
- |
|
Stellite |
7 |
220 |
1000 |
14 |
15 |
8.4 |
1000 |
- |
|
T/C - Cobalt |
8 |
600 |
1400 |
4 |
100 |
15 |
400 |
0.07 |
|
T/C - Nickle |
8 |
600 |
600 |
5 |
90 |
15 |
250 |
0.07 |
|
Ceramic 85% |
8 |
200 |
150 |
5 |
12 |
3.4 |
1400 |
0.07 |
|
Ceramic 99.5% |
8 |
350 |
250 |
7 |
25 |
3.9 |
1700 |
0.07 |
|
SiC Alpha Sintered |
9.7 |
400 |
250 |
4 |
130 |
3.1 |
1000 |
0.02 |
|
Sic Reaction Bonded |
9.7 |
400 |
250 |
4 |
150 |
3.1 |
1000 |
0.02 |
|
(a) Severe oxidation in air, or significant loss of hardness, or changed microstructure. |
||||||||
|
Hard Face Material |
||||||||
|
Vickers |
N/mm2 |
Watts/m°C |
Gm/cc. |
°C(a) |
||||
|
Siliconized graphite |
||||||||
|
PE-8148 |
2000 |
16 |
50 |
1.95 |
232 |
|||
|
Reaction Bonded |
||||||||
|
PR9242 |
2400 |
365 |
145 |
3.08 |
1372 |
|||
|
Reaction Bonded |
||||||||
|
plus graphite PG9723 |
152 |
153 |
2.8 |
538 |
||||
|
Alpha sintered |
||||||||
|
PS-10070 |
3000 |
400 |
130 |
3.1 |
1649 |
|||
|
PS-10138 |
3000 |
407 |
130 |
3.1 |
1649 |
The Mc Nally Institute
1637 Sand Key Estates Ct. Clearwater, Fl
33767