| Alloy |
Density, g/cm3 |
Processing |
Hardness |
Yield Strength, MPa (ksi) |
Tensile Strength, MPa (ksi) |
Elongation |
Reduction in Area, % (a) |
Corrosion Resistance |
Used for Applications Requiring |
Precautions, Comments |
| Unalloyed U |
19.1 |
Cast, ß- quenched, hydrogen outgassed |
93 HRB |
295 (43) |
700 (101) |
22 |
... |
Poor |
Complex shapes, low strength requirements |
... |
| Ualloyed U |
19.1 |
alpha-rolled, Hydrogen Outgassed |
94 HRB |
270 |
720 (39) |
31 ( 104) |
... |
Poor |
Sheet, rod, formed parts, low strength requirements |
.... |
| U-0.75Ti |
18.6 |
gamma-quenched |
36 HRC |
650 (94) |
1310 (190) |
31 |
52 |
Fair |
Moderate strength, high ductility |
Section thickness limitations, high residual stresses, low hydrogen required |
| U-0.75Ti |
18.6 |
gamma-quenched, aged 380 C (715 F),6h |
42HRC |
965 (140) |
1565 (227) |
19 |
29 |
Fair |
High strength ,moderate ductility |
Section thickness limitations, high residual stresses, low hydrogen required |
| U-0.75Ti |
18.6 |
gamma-quenched, aged 450 C (840F), 6h |
52 HRC |
1215 (176) |
1660 (241) |
<2 |
<2 |
Fair |
Maximum hardness, low ductility |
Low ductility and toughness, very sensitive to stress-corrosion cracking if stressed |
| U-2.0Mo |
18.5 |
gamma-quenched, aged 550 C (1020F), 5h |
34 HRC |
675 (98) |
110 (160) |
23 |
25 |
Poor |
Moderate strength, stresses |
... |
| U-2.3Nb |
18.5 |
gamma-quenched, aged 600C (1110F), 5h |
32 HRC |
545 (79) |
1060 (154) |
28 |
33 |
Fair |
Moderate strength, low residual stresses |
.... |
| U-4.5Nb |
17.9 |
gamma-quenched, aged 260C (500F), 16h |
42 HRC |
900 |
1190 |
10 |
8 |
Good |
High strength, moderate corrosion resistance |
Reduced sensitivity to quench rate |
| U-6.0Nb |
17.3 |
gamma-quenched |
82 HRB |
160 (23) |
825 (120) |
31 |
34 |
Excellent |
High corrosion resistance, high ductility |
Low sensitivity to quench rate |
| U-10Mo |
16.3 |
gamma-quenched |
28 HRC |
900 (130) |
930 (134) |
9 |
30 |
Excellent |
High corrosion resistance, high strength |
Very low sensitivity to quench rate, very susceptible to stress-corrosion cracking |
| U-7.5Nb-2.5Zr |
16.4 |
gamma-quenched |
20 HRC |
540 (78) |
850 (123) |
23 |
50 |
Excellent |
High corrosion resistance, moderate strength, high ductility |
Very low sensitivity to quench rate, very susceptible to stress corrosion cracking |
(a) All based on high-purity alloys with low hydrogen contents
DUF6 Guide
