ASTM
F-15 Alloy Properties
| Chemical Composition
% |
| Nickel |
29 |
Nominal |
| Cobalt |
17 |
Nominal |
| Manganese |
0.05 |
Maximum |
| Silicon |
0.20 |
Maximum |
| Carbon |
0.06 |
Maximum |
| Iron |
Balance |
Maximum |
|
Thermal Expansion
Coefficient
|
| 30-4000C (86-7520F) |
4.60 to 5.20 x 10-6cm/cm/0C |
2.6 to 2.9 x 10-6in/in/0F |
| 30-4500C (86-8420F) |
5.10 to 5.50 x 10-6cm/cm/0C |
2.8 to 3.1 x 10-6in/in/0F |
|
Physical
Properties
|
| Density |
8.35
gm/cc |
0.302 lb/cu.in. |
| Melting Point |
14500C |
26420 |
| Thermal Conductivity |
| at 300C (860F) |
0.0395 gm cal./sq.cm/sec/0C/cm |
0.0318 BTU/sq.ft./0F/in. |
| at 3000C (6320F) |
0.0485 gm cal./sq.cm/sec/0C/cm |
0.0391 BTU/sq.ft./0F/in. |
|
Electrical Resistivity
|
| at 200C (680F) |
49
microhm/sq.cm/cm |
294
ohm/cir.mil./ft. |
| Core
Temperature |
4350C |
8150F |
|
Mechanical
Properties
|
| Tensile Strength |
52.7 kg/sq.mm |
75,000 psi |
| Yield Strength 0.2% offset |
28.1 kg/sq.mm |
40,000 psi |
| Elongation % in 2 in. (5.08cm) |
30 |
| Reduction of Area (%) |
70 |
| Modulus of Elasticity |
14.1 x 103kg/sq.mm |
20 x 106 psi |
| Hardness (Rockwell 15T) |
81 |
| Poisson's Ratio |
0.30 |
Linear Thermal Expansion
of F-15 Alloy and Hard Glass
vs. Temperature
