Titanium Grade 5 (Ti-6Al-4V) properties
Grade 5, the alloy Ti-6Al-4V, is the most widely used titanium alloy, accounting for most titanium production. It offers high strength, low weight, and excellent corrosion resistance, and it is the workhorse of aerospace and medical implants.
Mechanical properties
| Property | Value |
|---|---|
| Yield strength | 128 ksi (880 MPa) |
| Ultimate tensile strength | 138 ksi (950 MPa) |
| Elongation | 14% |
| Hardness | about 36 HRC (Rockwell C) |
| Modulus of elasticity | 16,500 ksi (114 GPa) |
Physical properties
| Property | Value |
|---|---|
| Density | 0.160 lb/in³ (4430 kg/m³) |
| Melting point | about 1605 to 1660 °C |
Thermal properties
| Property | Value |
|---|---|
| Thermal conductivity | 6.7 W/m·K |
| Thermal expansion | 8.6 µm/m·°C |
| Specific heat | 526 J/kg·K |
Values are typical for the grade and condition shown. Actual properties vary with temper, heat treatment, and product form, so use these for comparison and preliminary design and confirm against material certificates for final work.
Compare with other materials
See the Material Properties Comparison, Yield Strength, and Density charts.
Typical uses
Grade 5 titanium is used for aircraft structures and engines, fasteners, medical and dental implants, and high-performance parts. Its strength rivals many steels at little more than half the weight, while resisting corrosion and tolerating moderate heat.
How it compares
Grade 5 is far stronger than commercially pure Grade 2, with strength comparable to alloy steel at about 57 percent of the weight. It is harder to machine and weld than Grade 2, so it is chosen when high strength-to-weight is the priority.
FAQ
What is Ti-6Al-4V?
Titanium Grade 5, an alloy with about 6 percent aluminum and 4 percent vanadium. It is the most common titanium alloy, strong and light.
How strong is Grade 5 titanium?
About 128 ksi yield, comparable to alloy steel, but at roughly 57 percent of steel weight, giving an exceptional strength-to-weight ratio.
What is Grade 5 titanium used for?
Aerospace structures and engines, medical and dental implants, and high-performance fasteners and parts needing strength with light weight.