Ti 6Al 4V (Grade 5 alloy)
Jan 15, 2026
What is GR5 titanium?
The GR5 titanium alpha-beta alloy is the most widely used commercial high-strength titanium.
The alloy combines good mechanical strength and low density (4.42 kg/dm ) with excellent corrosion resistance in many media.
Inquire about GR5 pricing and samples
Ti-6Al-4V (GR5 Titanium Alloy) – Typical Properties Table
| Category | Property | Typical Value / Specification Range | Comments / Standard Reference |
|---|---|---|---|
| Chemical Composition | Titanium (Ti) | Balance | Base element. |
| Aluminum (Al) | 5.50 – 6.75 % | Primary alpha stabilizer. | |
| Vanadium (V) | 3.50 – 4.50 % | Primary beta stabilizer. | |
| Iron (Fe) | ≤ 0.40 % | Impurity element, max limit. | |
| Oxygen (O) | ≤ 0.20 % | Impurity element, strongly influences strength. | |
| Carbon (C) | ≤ 0.08 % | Impurity element, max limit. | |
| Nitrogen (N) | ≤ 0.05 % | Impurity element, max limit. | |
| Hydrogen (H) | ≤ 0.015 % | Impurity element, max limit. | |
| Physical Properties | Density | 4.43 g/cm³ (0.160 lb/in³) | About 56% of steel's density. |
| Melting Range | 1604 – 1660 °C (2919 – 3020 °F) | Liquidus to solidus range. | |
| Modulus of Elasticity | ~114 GPa (16.5 x 10⁶ psi) | Measure of stiffness. | |
| Thermal Conductivity | ~6.7 W/(m·K) | Relatively low, affects machining. | |
| Coefficient of Thermal Expansion | 8.6 x 10⁻⁶ /°C (20-100°C range) | Linear expansion rate. | |
| Electrical Resistivity | ~1.7 µΩ·m | Relatively high. | |
| Mechanical Properties (Annealed Condition) | Tensile Strength (min) | ≥ 895 MPa (≥ 130 ksi) | Common minimum per ASTM B265/B348. |
| Yield Strength (0.2% Offset, min) | ≥ 828 MPa (≥ 120 ksi) | Common minimum per ASTM B265/B348. | |
| Elongation (min) | ≥ 10 % (in 4D) | Measure of ductility. | |
| Reduction of Area (min) | ≥ 20 % | Measure of material toughness. | |
| Hardness (typical) | ~334 HB (Brinell) / ~36 HRC | Approximate conversion values. |
Heat Treatment:
Grade 5 titanium is entirely heat treatable (solution heat treatment plus ageing) in sections up to 25mm and can be employed up to around 400° C. We stock Grade 5 titanium in various forms, including round bars, plates, sheets and tubes.
Machinability:
The alloy can be machined using practices for austenitic steels with slow speeds, heavy feeds, rigid tooling and large amounts of non-chlorinated cutting fluid.
Weldability:
Welding in the annealed or solution/partially aged condition is good, with ageing completed during the post-weld heat treatment. An inert gas shield must protect the workable area of the weld, heat-affected zone (HAZ) and cooling weld bead from oxidation (oxygen, nitrogen and hydrogen). Fusion welding is achieved by inert gas welding of the molten metal and the adjacent heated zones using a trailing shield. Protective atmospheres are not required when spot, seam and flash welding.
Corrosive Resistance:
Grade 5 titanium offers excellent resistance to marine and offshore oil & gas environments. It resists a wide range of acid conditions, being highly resistant to oxidising acids, possessing impressive resilience to reducing acids and offering superior resistance to most organic acids at lower concentrations and temperatures. Hydrofluoric acid rapidly attacks the alloy, and use with red-fuming nitric acid is prohibited. Grade 5 has broad commercial engineering use and is popular in above-sea and sub-sea applications.
FAQ
| What is GR5 titanium alloy? GR5 titanium alloy, with the standard designation Ti-6Al-4V, is an alpha-beta titanium alloy primarily composed of titanium (Ti) with approximately 6% aluminum (Al) and 4% vanadium (V). |
| Why is GR5 titanium alloy so widely used? GR5 titanium alloy is widely used because it offers an optimal balance of high strength, good ductility, excellent corrosion resistance, and favorable weldability, making it versatile for demanding applications. |
| What is the chemical composition of GR5 titanium? The nominal chemical composition of GR5 titanium is Titanium (Ti) balance, Aluminum (Al) 5.5-6.75%, Vanadium (V) 3.5-4.5%, with strict limits on impurities like Iron (Fe), Oxygen (O), Carbon (C), and Nitrogen (N). |
| What are the key mechanical properties of GR5 titanium? Typical minimum mechanical properties for annealed GR5 titanium are: Tensile Strength ≥ 895 MPa, Yield Strength ≥ 825 MPa, and Elongation ≥ 10%. Its strength can be increased through heat treatment. |
| What is the density of GR5 titanium? The density of GR5 titanium is approximately 4.43 g/cm³, which is about 60% of the density of steel, contributing to its high strength-to-weight ratio. |
| Can GR5 titanium be heat treated? Yes, GR5 titanium can be strengthened through solution treatment and aging (STA) processes, which enhance its mechanical properties compared to the annealed condition. |
| Is GR5 titanium corrosion resistant? Yes, GR5 titanium exhibits excellent corrosion resistance in many environments, including seawater, chloride solutions, and various chemical media, due to a stable, protective oxide film. |
| Can GR5 titanium be welded? Yes, GR5 titanium has good weldability using processes like Gas Tungsten Arc Welding (GTAW/TIG) and Electron Beam Welding (EBW), provided that strict shielding from atmospheric contamination is maintained. |
| 9. How does the strength of GR5 compare to commercially pure (CP) titanium grades? GR5 titanium has significantly higher strength than CP titanium grades (such as GR2 or GR4). GR5 is a medium-strength alloy, whereas CP grades are lower in strength but often more formable. |
Our product range
| Product Category | Product Form | Common Grades / Alloys | Applicable Standards (Examples) |
|---|---|---|---|
| Titanium Tubes | Seamless & Welded Tubes | • CP (Commercially Pure): Gr1, Gr2, Gr3 • Alloys: Ti-6Al-4V (Gr5), Ti-3Al-2.5V (Gr9) | ASTM B337, B338 ASME SB338 DIN 17860, 17861 GB/T 3624, 3625 |
| Titanium Bars | Round, Hexagon, Square Bars | • CP: Gr1, Gr2, Gr4 • Alloys: Ti-6Al-4V (Gr5), Ti-6Al-4V ELI | ASTM B348 ASME SB348 AMS 4928 GB/T 2965 |
| Titanium Plates/Sheets | Plates, Sheets, Strips | • CP: Gr1, Gr2, Gr3, Gr4 • Alloys: Ti-6Al-4V (Gr5), Ti-6Al-4V ELI, Ti-15V-3Cr-3Sn-3Al (Gr21) | ASTM B265 ASME SB265 AMS 4911 GB/T 3621 |
| Titanium Wires | Coils, Straight Lengths | • CP: Gr1, Gr2, Gr4 • Alloys: Ti-6Al-4V (Gr5) • Specialty: Ti-Ni Shape Memory Alloy (on request) | ASTM F67, B863 AMS 4954 GB/T 3623 |
| Titanium Foils | Thin Foils, Ultra-thin Strips | • CP: Gr1, Gr2 (most common) | ASTM B265 (for thinner gauges) Custom specifications |
Our factory
why choose our products
Our factory is a specialized and integrated manufacturer dedicated to titanium and titanium alloy products. Equipped with advanced precision forging, rolling, drawing, and heat treatment lines, we produce a complete range of forms including tubes, bars, plates/sheets, wires, and foils. We strictly adhere to international standards such as ASTM, ASME, and GB, utilizing grades from CP (Gr1, Gr2) to high-performance alloys like Ti-6Al-4V (Gr5). Our core strength lies in our stringent process control from raw material to finished product, supported by a fully-equipped in-house laboratory for metallurgical and mechanical testing. This integrated system ensures exceptional quality, consistency, and reliability for our customers in aerospace, medical, chemical processing, and other high-tech industries.
