What is GR6 titanium?
GR6 titanium, formally designated as Ti-5Al-2.5Sn (UNS R54520), is a near-alpha titanium alloy developed to fulfill specialized engineering requirements where standard commercially pure or alpha-beta titanium alloys prove insufficient. Unlike the more prevalent GR5 (Ti-6Al-4V), GR6 serves niche applications that prioritize specific performance characteristics over general-purpose strength.
Composition
The composition of Ti5Al2.5Sn Grade 6.
|
Content |
|
|
C |
<0.08% |
|
Fe |
<0.5% |
|
N2 |
<0.05% |
|
O2 |
<0.2% |
|
Al |
4.0-6.0% |
|
Sn |
2.0-3.0% |
|
H2 |
<0.02% |
|
Ti |
Balance |
Other designations for Ti5Al2.5Sn include
• AMS 4910
• AMS 4926
• AMS 4966
• ASTM B265 Gr6
• ASTM B348 Gr6
• ASTM B381 Gr6
• MIL –T-9046 2A or ELI 2B
• MIL –T-9047 2A or ELI 2B
Physical Properties
|
Property |
Typical Value |
|
Density g/cm3 (lb/ cu in) |
4.48 (0.161) |
|
Melting Range °C±15°C (°F) |
1571 (3860) |
|
Specific Heat J/kg.°C (BTU/lb/°F) |
540 (0.129) |
|
Volume Electrical Resistivity ohm.cm (ohm.in) |
157 (62) |
|
Thermal Conductivity W/m.K (BTU/ft.h.°F) |
7.7 (53) |
|
Mean Co-Efficient of Thermal Expansion 0-100°C /°C (0-212°F /°F) |
9.5x10-6 (5.3) |
|
Beta Transus °C±15°C (°F) |
1038 (1900) |
Mechanical Properties
|
Property |
Minimum |
Typical Value |
|
Tensile Strength MPa (ksi) |
828 (120) |
972 (141) |
|
0.2% Proof Stress MPa (ksi) |
779 (113) |
897 (130) |
|
Elongation Over 2 Inches % |
10 |
16 |
|
Reduction in Area % |
25 |
|
|
Elastic Modulus GPa (Msi) |
110 (16) |
|
|
Hardness Rockwell C |
36 |
|
|
Specified Bend Radius <0.070 in x Thickness |
4.0 |
|
|
Specified Bend Radius >0.070 in x Thickness |
4.5 |
|
|
Post-weld stress relieved |
5.0 |
|
|
Charpy, V-Notch Impact J (ft.lbf) |
26 (19) |
Fabrication
• Weldability – Excellent
• Forging – Rough 1010-1030°C (1850-1900°F), finish 954-1010°C (1750-1850°F)
• Annealing – 718-843°C (1325-1550°F), 10 min-4hr, AC
• Stress Relief Annealing – 538-650°C (1000-1200°F), 15-60 mins, A.C.
Comparison with Common Alternatives
vs. GR5 (Ti-6Al-4V): GR5 offers significantly higher room-temperature strength (~895-1035 MPa) and is the default for most structural applications. GR6 is selected instead when the design driver is weldability, creep resistance above 150°C, or cryogenic performance.
vs. GR2 (Commercially Pure): GR2 is more ductile, easier to form, and generally more corrosion-resistant, but its strength is far lower (~345 MPa). GR6 provides a substantial strength increase while retaining good fabrication characteristics.
Get Instant Quote & Stock Check
Our factory
Our factory specializes in the field of international trade of titanium materials, professionally producing high-quality series products such as titanium tubes, titanium bars, titanium plates, titanium wires, and titanium strips. The factory is equipped with internationally advanced production and testing equipment, including precision forging units, high-speed cold rolling mills, vacuum melting furnaces, CNC spinning machines, continuous drawing production lines, and automated surface treatment systems. Coupled with precision testing instruments such as spectrometers and ultrasonic flaw detectors, we ensure precise control over the entire process from raw materials to finished products. We are committed to providing global customers with titanium products that offer excellent performance and a complete range of specifications through stable and reliable processes and strict quality management, meeting the application needs of high-end industries such as energy, chemical, aerospace, and medical fields.
Titanium product packaging
We place great emphasis on the transportation safety and delivery quality of our products. All titanium materials are packaged using strict industrial-grade solutions: titanium tubes and bars undergo anti-rust treatment, are tightly wrapped with waterproof stretch film, and then placed in reinforced wooden or iron boxes lined with moisture-proof paper, with fillers added to prevent sliding and collisions during transportation. Titanium plates and strips are covered with protective film, fitted with edge protectors, separated layer by layer with moisture-proof paper, loaded onto sturdy wooden or steel pallets, and securely fastened with steel straps. Fine titanium wires are neatly coiled onto specialized spools and encapsulated in sealed boxes that are waterproof and dustproof. Each packaging unit is accompanied by clear product labels, material certificates, and moisture-proof indicators, ensuring that the goods remain intact, clearly labeled, and safely delivered to global customers through long-distance sea freight and multimodal transportation.
Request Technical Consultation
