Titanium Grade 5 – the most widely used titanium alloy globally – is known for its exceptional combination of high strength, low weight, corrosion resistance and good weldability. It is used in almost all industries where high performance is required, from aerospace and medicine to offshore, racing and advanced industry.
The recommended filler material for welding is Titanium AWS A5.16-90 ERTi-5.
General material description:
Type: α + β titanium alloy (~6% aluminum, ~4% vanadium)
Structure: Mixed structure – alpha + beta, with excellent balance between strength and toughness
Developed for: High strength at low weight, while maintaining formability and corrosion resistance
Alternative names: Titanium Grade 5, Ti-6Al-4V, UNS R56400, Werkstoffnr 3.7165, ASTM B348, AMS 4911
Key benefits:
Very high strength (up to 1100 MPa)
Low density – approximately 45% lighter than steel
Excellent corrosion resistance in many environments
Good biocompatibility – often used in implants
Good weldability and dimensional stability during machining
Maintains strength up to ~400°C
Disadvantages / Limitations:
More expensive than stainless steels and Grade 1–4
Limited cold formability – requires hot working for complex shapes
Not optimal in extremely chloride-rich solutions (risk of crevice/pitting corrosion)
Risk of hydrogen-induced embrittlement if handled poorly
Applications by industry and value:
Aviation / Space: Structural parts, turbine components, fasteners – strength + low weight
Medical technology: Implants, orthopedic screws – biocompatibility + load-bearing capacity
Offshore / Marine: Fasteners, piping – corrosion resistance + strength
Power industry: Turbine blades, compressors – thermal stability
Sports / Racing / Industry: Bicycle parts, engine blocks, tools – strength + lightness
General corrosion description:
Forms a dense and self-healing oxide film that protects in most environments
Excellent resistance to seawater, chlorides, organic acids
Resists moderate acids and alkalis
Corrosion environments where the material performs well:
Seawater and marine environments (especially when in motion)
Oxidizing acids (nitric acid, chromic acid)
Organic acids, alkaline solutions
Biological environments / body fluids
Corrosion environments where the material should be avoided:
Hydrofluoric acid (HF)
Strong chloride environment in stagnant liquid (risk of pitting/crevice corrosion)
Reducing acids (conc. HCl, H₂SO₄ in hot environment)
Technical material properties (solution treated + aged condition):
Property (Typical value)
Yield strength (0.2%): ~825–950 MPa
Tensile strength: ~900–1100 MPa
Elongation at break: ~10–15%
Density: ~4.43–4.50 g/cm³
Elastic modulus: ~114 GPa
Thermal conductivity: ~6.7 W/m·K
Usage temperature: Rec. ≤ 400°C (shortly up to ~540°C)
Weldability: Very good – but requires shielding gas (argon)
Machinability: Good – but requires tools with high wear resistance