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Critical Temperature and Melting Point for Common Engineering Materials

Engineering Materials

Critical Temperature and Melting Point for Common Engineering Materials

Critical temperature is the temperature of a gas or vapor in its critical state. Above this temperature, a gas cannot be liquefied by pressure alone.

Element
Melting Point °C
Critical Temp °C
Phase at Critical T
Aluminium
660
1124
Liquid
Americium
1176
896
Solid
Antimony
631
455
Solid
Arsenic
84
270
Liquid
Barium
729
574
Solid
Beryllium
1289
1102
Solid
Cadmium
321
226
Solid
Caesium
29
114
Liquid
Calcium
847
538
Solid
Californium
900
1402
Liquid
Cerium
798
1602
Liquid
Chromium
1863
1220
Solid
Cobalt
1492
1418
Solid
Copper
1084
1146
Liquid
Dysprosium
1412
1025
Solid
Erbium
1529
1139
Solid
Europium
822
547
Solid
Gadolinium
1312
1450
Liquid
Gallium
30
954
Liquid
Germanium
938
1260
Liquid
Gold
1064
1291
Liquid
Hafnium
2231
2255
Liquid
Holmium
1474
1146
Solid
indium
157
836
Liquid
Iridium
2447
1199
Solid
Iron
1538
1253
Solid
Lanthanum
918
1586
Liquid
Lead
328
622
Liquid
Lithium
181
465
Liquid
Lutetium
1663
1517
Solid
Magnesium
651
386
Solid
Manganese
1246
887
Solid
Mercury
-39
22
Liquid
Molybdenum
2623
2319
Solid
Neodymium
1021
1219
Liquid
Neptunium
639
1781
Liquid
Nickel
1455
1409
Solid
Niobium
2468
2501
Liquid
Osmium
3033
2721
Solid
Palladium
1555
1348
Solid
Platinum
1769
1800
Liquid
Plutonium
640
1506
Liquid
Potassium
64
165
Liquid
Praseodymium
931
1381
Liquid
Protactinium
1572
2636
Liquid
Rhenium
3186
2817
Solid
Rhodium
1963
1874
Solid
Rubidium
39
129
Liquid

 

Substance
Vapour Pressure (Pa)
Temperature (°C)
Acetaldehyde
98.7
20
Acetone
24640
20
Butane
22
20
Carbonyl sulphide
1255
25
Ethanol
5.83
20
Ethylene glycol
0.5
20
Formaldehyde
435.7
20
Freon 113
37.9
20
Methanol
12800
20
Methyl isobutyl ketone
26.48
25
Nitrogen (N2)
63200
20
Oxygen (O2)
54200
20
Propane
2200
55
Propanol
2.4
20
Tungsten
0.1
3203
Water (H2O)
2.3
20
Xenon difluoride
0.6
25

 

Substance
Vapour Pressure (Pa)
Melting point (°C)
Apiezon Oil J
0.13 at 200°C
1.3 x 10-4 at 20°C
-
Apiezon Oil K
0.13 at 300°C
1.3 x 10-7 to 10-8 at 20°C
-
Apiezon Grease L
0.13 at 100°C
1.3 x 10-7 to 10-9 at 20°C
47
Apiezon Grease M
0.13 at 200°C
1.3 x 10-5 to 10-6 at 20°C
44
Apiezon Grease N
0.13 at 200°C
1.3 x 10-6 to 10-7 at 20°C
43
Apiezon Grease T
About 1.3 x 10-6 at 20°C
125
High Vacuum Grease Dow Corning
< 1 x 10-4 at 20°C
-
Nylon
~ 1 x 10-3 at 20°C
-
Teflon
< 1 x 10-4 at 20°C
-
Viton
1 x 10-6 at 20°C
-
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