Grade 5 Technical Data
Principal Uses |
Airframe and turbine engine parts (blades, discs, wheels, spacer rings), ordnance equipment, pressure vessels, and rockets motor cases | ||||||
Available Forms |
Sheet, strip, plate, bar, billet, wire, and extrusions | ||||||
Nominal Composition |
0.08% max C, 0.05% max N, 0.015% max H (sheet) ➀ 0.025% max Fe, 5.75-6.75% AL, 3.4-4.5% V, 0.20% max O | ||||||
Type Structure |
Alpha-Beta | ||||||
Mechanical Properties |
Guaranteed RT Minimum | Typical Strength (%RT) & Ductibility | |||||
| 400F | 600F | 800F | 1000F | ||||
| Ultimate Tensile Strength, psi | 130,000 | 77 | 74 | 68 | 54 | ||
| Yield Strength, 0.2% offset, psi | 120,000 | 75 | 68 | 63 | 45 | ||
| El in 2" (> 0.025" thick), pct | 10 | 17 | 17 | 18 | 27 | ||
| Reduction of Area, percent | 20 | 50.5 | 51.5 | 52.1 | 67.9 | ||
| Bend Radius | 4.5T ➁ 5T ➂ | ||||||
| Impact, Charpy V, ft-lb, Room Temperature | 18 | ||||||
| Welded Bend Radius | 6-10 T | ||||||
| Hardness | Rc 30/34 | ||||||
| Rupture, Stress to Produce in ( ) hr, psi | 1000 hr 98,000 |
1000 hr 58,000 |
|||||
| Creep Data, Stress to Produce ( ) percent elongation in ( ) hr, psi | 0.1% 1000 hr 70,000 |
0.1% 1000 hr 32,000 |
|||||
Physical Properties |
|||||||
| Modulus of Elasticity, psi (106) tension | 16.5 | ||||||
| Modulus of Elasticity, psi (106) torsion | Approx. 6.10 | ||||||
| Density, lb / cu inch | 0.160 | ||||||
| Melting Range, deg F | Approx. 3000F | ||||||
| Specific Electrical Resistivity micro ohms/cm/sq cm |
171 at room temperature; 187 at 800F | ||||||
| Specific Heat, Btu/lb/deg F | 0.135 at room temperature | ||||||
| Thermal Conductivity, Btu/hr.ft2-deg F/ft | 4.2 at room temperature; 6.8 at 800F | ||||||
| Mean Coefficient of Thermal Expansion per deg F. (10-6) |
32 - 212F | 4.9 | |||||
| 32 - 600F | 5.1 | ||||||
| 32 - 1000F | 5.3 | ||||||
| 32 - 1200F | 5.5 | ||||||
| 32 - 1500F | 5.7 | ||||||
| Oxidation Characteristics in Air |
400F | 600F | 800F | 1000F | |||
| Short Time | Good | Good | Good | Moderate | |||
| Long Time | Good | Good | Slight | Moderate | |||
Remarks on Fabrication |
|||||||
| Beta Transus | 1830±25F | ||||||
| Cutting | Readily cut with saw or abrasive wheel | ||||||
| Machinging | Rigid set-up, slow speed, heavy feed, sharp tools, adequate coolant | ||||||
| Forming | Formed at room temp. whenever possible. Hot forming recommended for complex structures. | ||||||
| Joining, Welding | Sound moderately ductile welds if protected | ||||||
Remarks on Heat Treatment |
|||||||
| Initial Forging | 1850F, no higher than 1775F to finish | ||||||
| Sheet - Strip - Plate Annealing - Bars and Forgings |
1300 - 1600F, 15 - 60 min, air cool slower 1300 - 1450F, 1 - 2 hours, air cool or slower |
||||||
| Solution Treating | 1700 - 1750F, 1 hr water quench (bar) 1660 - 1725F, 5 - 20 min, WQ (sheet and plate) |
||||||
| Aging | 1000F, 4 hr, AC | ||||||
| Stress Relief Annealing | 900 - 1200F, 1 - 4 hr, AC | ||||||
Notes and General Remarks |
See Reference 3 for properties in aged condition. ➀ 0.0125% max H (bar), 0.0100% max H (billet) ➁ < 0.070 inch ➂ > 0.070 inch | ||||||