Download
in PDF FormatHIGH TEMPERATURE / CORROSION RESISTANT ALLOYS
MOLYBDENUM
ASTM B 387 TYPE 361
TYPICAL NOMINAL CHEMISTRY
MOLYBDENUM (MO) |
99.9 (MINIMUM) |
POTASSIUM (K) |
0.0007 |
ALUMINUM (AL) |
0.0005 |
SILICON (SI) |
0.0050 |
IRON (FE) |
0.0040 |
NICKEL (NI) |
0.0030 |
COPPER (CU) |
0.0001 |
CHROMIUM (CR) |
0.0001 |
SODIUM (NA) |
0.0001 |
TUNGSTEN (W) |
0.0020 |
MOLYBDENUM TYPICAL PROPERTIES
ATOMIC WEIGHT |
95.94 |
DENSITY |
10.14 gm/cm³ |
MELTING POINT |
2610 +/- 10 C |
RECRYSTALLIZATION TEMP |
100% |
RECRYSTALLIZATION |
1000 to 1100 C |
THERMAL CONDUCTIVITY
20 C |
0.34 cal/cm/s/ c |
1000 C |
0.25 cal/cm/s/ C |
1500 C |
0.22 cal/cm/s/ C |
2200 C |
0.17 cal/cm/s/ C |
TRANSITION POINT
BRITTLE/DUCTILE |
-100 to 100 C |
SPECIFIC HEAT
20 C |
6.2 x 10-2 cal/gm/ C |
1000 C |
7.4 x 10-2 cal/gm/ C |
2000 C |
10.0 x 10-2 cal/gm/ C |
VAPOR PRESSURE
1500 C |
6.4 x 10-9 mm Hg |
2000 C |
4.0 x 10-5 mm Hg |
2500 C |
1.0 x 10-2 mm Hg |
COEFFICIENT OF LINEAR EXPANSION
20 C |
5.3 x 10-6 C-1 |
20 – 1000 C |
5.8 x 10-6 C-1 |
20 – 1500 C |
1.0 x 10-6 C-1 |
TENSILE STRENGTH
SHEET |
50 kpsi – 115 kpsi |
ROD |
60 kpsi – 110 kpsi |
WIRE |
90 kpsi – 350 kpsi |
YIELD STRENGTH (0.2% OFFSET)
SHEET |
40 kpsi – 95 kpsi |
ROD 55 |
kpsi – 90 kpsi |
WIRE |
75 kpsi – 300 kpsi |
RESTIVITY
20 C |
5.3 x 10-6 ohm-cm |
1000 C |
3.2 x 10-5 ohm-cm |
2000 C |
6.1 x 10-5 ohm-cm |
TEMPERATURE COEFFICIENT OF THE RESTIVITY
(20 – 100 c) |
4.5 x 10-3 C-1 |
HARDNESS
SHEET |
220 – 240 DPH |
ROD |
200 – 220 DPH |
WIRE |
250 – 300 DPH |