Specifications
- Plate, Sheet & Strip: ASTM B265
- Rod & Bar: ASTM B348
Titanium Grade 5, also known as Ti-6Al-4V, is a popular titanium alloy appreciated for its excellent strength-to-weight ratio, corrosion resistance, and biocompatibility. Composed of titanium, aluminum, and vanadium, Grade 5 titanium exhibits superb mechanical properties, making it suitable for a wide range of applications across various industries.
Its combination of strength and low density makes it particularly well-suited for aerospace components, such as aircraft structural components, engine parts, and aircraft frames. Additionally, Grade 5 titanium finds applications in marine environments due to its resistance to corrosion in seawater. It is also commonly used in medical implants, sports equipment, and automotive components where lightweight, high-strength materials are required.
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| Specific Gravity |
| 0.160 |
| Modulus of Elasticity (E) | 15.2 x 103 ksi |
| Beta Transus | 1800 to 1850 °F |
| Liquidus Temperature | 2976 to 3046 °F |
| Solidus Temperature | 2900 to 2940 °F |
| Electrical Resistivity | |
| -418°F | 902.5 ohm-cir-mil/ft |
| 73°F | 1053 ohm-cir-mil/ft |
| 986°F | 1143 ohm-cir-mil/ft |
| Ultimate Bearing Strength | 1380-2070 MPa (200-300 ksi) |
| Compressive Yield Strength | 825-895 MPa (120-130 ksi) |
| Ultimate Shear Strength | 480-690 MPa (70-100 ksi) |
| Ultimate Tensile Strength |
Yield Strength | %EI |
%RA |
|||
| MPa | ksi | MPa | ksi | |||
| Minimum Specified Tensile Properties | ||||||
| Annealed | 896 | 130 | 827 | 120 | 10 | 25 |
| STA (depending on diameter) | 1035 – 1135 | 150 – 165 | 965 – 1070 | 140 – 155 | 10 | 20 |
| Typical Tensile Properties | ||||||
| Annealed | 965 – 1090 | 140 – 158 | 875 – 995 | 127 – 144 | 16 | 46 |
| STA (depending on diameter) | 1100 – 1220 | 160 – 177 | 1035 – 1130 | 150 – 164 | 15 | 52 |
| Fatigue Limits (Axial Fatigue, R = 0.06 to 0.1) |
|
| Smooth | 400-700 MPa (60-100 ksi) |
| Notched (KT = 3) | 140-270 MPa (20-40 ksi) |
| Material | Ultimate Tensile Strength |
Specific Strength | ||
| MPa | ksi | m x 103 | in x 106 | |
| Ti 6AI-4V STA | 1172 | 170 | 27.0 | 1063 |
| Ti 6AI-4V Annealed | 924 | 134 | 21.3 | 838 |
| 4130 Steel | 1379 | 200 | 17.9 | 707 |
| 7075-T6 Aluminum | 538 | 78 | 19.6 | 772 |
| 2024 T3 Aluminum | 441 | 64 | 16.1 | 634 |
| Inconel 718 | 1276 | 185 | 15.3 | 603 |
| Sulfuric Acid | Moderate |
| Sodium Hydroxide | Moderate |
| Sea Water | Excellent |
| Humidity | Excellent |
| Acetic Acid | Excellent |
| Salt Spray (NaCl) | Excellent |
| Medium | Concentration | Temperature | Corrosion Rate | ||
| % | °C | °F | mm/yr | mils/yr | |
| Sea Water | n/a | room | nil | nil | |
| Hydrochloric Acid | 2 | 37.8 | 100 | nil – 0.03 | nil – 1.2 |
| Hydrochloric Acid | 10 | 37.8 | 100 | 0.508 – 1.02 | 20 – 40 |
| Hydrochloric Acid + 5% CrO2 | 10 | 65.6 | 150 | nil – 0.005 | nil – 0.2 |
| Hydrochloric Acid | vapors | 37.8 | 100 | 8.33 – 1.04 | 328 – 408 |
| Nitric Acid | 65 | boiling | 0.076 – 0.13 | 3 – 5 | |
| Sulfuric Acid | 2 | 37.8 | 100 | 0.396 – 0.549 | 15.6 – 21.6 |
| Sodium Hydroxide | 25 | boiling | 0.046 – 0.051 | 1.8 – 2.0 | |
| Mill Anneal | 705 – 790°C (1300 – 1450°F) 1 – 4 hrs. – air cool (Or equivalent) |
| Solution Treat + Age (STA) | 940 – 970°C (1725 – 1775°F) 10 min. – water quench (or equiv.) + 480 – 595°C (900 – 1100°F) 2 – 8 hrs. – air cool (Or equivalent) |
| Stress Relief | 480 – 650°C (900 – 1200°F) 1 – 4 hrs. – air cool (Or equivalent) |
| Beta Anneal | 1035°C (1900°F) 30 min. – air cool + 730°C (1350°F) 2 hrs. – air cool |
| Heat Treatment | Thermal Cycle | Removal Required |
| Mill Anneal | 760°C (1400°F) 2 hrs. | 0.038 mm (0.0015 in.) |
| Solution Treat + Age (STA) | 954°C (1750°F) 10 min. + 480°C (900°F) 4 hrs. | 0.107 mm (0.0042 in.) |
