Comparison between Titanium Grade 1, Titanium Grade 2 , Titanium Grade 3 and Titanium Grade 4
Oct 22, 2025
GNEE can provide the form
Products Description
Titanium Grade 1, Titanium Grade 2 , Titanium Grade 3 and Titanium Grade 4 are considered commercially pure. Microstructurally, they are all alpha-phase alloys. The difference, however, lies in the amount of interstitial elements added to each grade. The figure below shows the interstitials level of each grade and its corresponding mechanical properties.
Interstitial elements such as O², Fe and N, with oxygen (Oxygen) being the most significant. Titanium Grade 1 contains the least interstitial elements and has the lowest ultimate tensile stress (UTS) i.e. 0.18% wt. O², 0.20% wt. Fe and 240 MPa. Titanium Grade 4, on the other hand, contains the most interstitial elements and has the highest UTS (more than twice that of Titanium Grade 1) i.e. 0.40% wt. O², 0.50% wt. Fe and 550 MPa. Therefore, we can conclude that the higher the interstitials e.g. O² and Fe, the stronger the alloy. It is evident that as UTS increases, elongation decreases, making the alloy less ductile. The strength of commercially pure Titanium thus increases with the Grade number i.e. Titanium Grade 4 is stronger than Titanium Grade 3, Titanium Grade 3 is stronger than Titanium Grade 2 and Titanium Grade 2 is stronger than Titanium Grade 1.
| Grade | UTS (MPa) | 0.2% (MPa) | %El | O2 %wt | C %wt | N %wt | H %wt | Fe %wt |
|---|---|---|---|---|---|---|---|---|
| 1 | 240 | 138 | 24 | 0.18 | 0.08 | 0.03 | 0.015 | 0.20 |
| 2 | 345 | 275 | 20 | 0.25 | 0.08 | 0.03 | 0.015 | 0.30 |
| 3 | 450 | 380 | 18 | 0.35 | 0.08 | 0.05 | 0.015 | 0.30 |
| 4 | 550 | 483 | 15 | 0.40 | 0.08 | 0.05 | 0.015 | 0.50 |
Products provided by GNEE
| Main Product | Common Grades (ASTM) | Standard Specifications | Common Surface Treatment |
|---|---|---|---|
| Titanium Tube (Seamless & Welded) |
Gr1, Gr2, Gr3, Gr7, Gr9, Gr12 | OD: 3mm - 150 mm Wall Thickness: 0.5mm - 10 mm Length: Up to 6000 mm (customizable) Standards: ASTM B337, ASTM B338 |
• Polished (Mirror / Satin) • Pickled • Annealed • Sandblasted |
| Titanium Sheet/Plate (Cold Rolled / Hot Rolled) |
Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr7, Gr9, Gr12 | Thickness: 0.1mm - 50 mm Width: 500mm - 1500 mm Length: 1000mm - 3000 mm Standards: ASTM B265 |
• Polished (No.4, BA, Mirror) • Pickled • Annealed • Sandblasted • Brushed |
| Titanium Wire | Gr1, Gr2, Gr5, Gr7 | Diameter: 0.1mm - 6.0 mm Form: Coil, Straight Length Standards: ASTM B863, F67, F136 |
• Annealed & Pickled • Bright (Clean) • Oxidized |
| Titanium Bar/Rod (Round, Hex, Square) |
Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr7, Gr9, Gr12 | Diameter (Round): 3mm - 200 mm Hex/Square Size: 4mm - 100 mm Length: 1000mm - 3000 mm (or cut-to-size) Standards: ASTM B348 |
• Turned / Peeled • Polished (Centerless Ground) • Annealed • Black Oxide |
| Titanium Foil | Gr1, Gr2,Gr5 (Ti-6Al-4V), Gr7, Gr9, Gr12 | Thickness: 0.03mm - 0.1 mm Width: 50mm - 500 mm Standards: ASTM B265 |
• Bright Annealed (BA) • Cold Rolled |
| Titanium CNC Machining Parts | Gr1, Gr2, Gr5 (Ti-6Al-4V), Gr7, Gr9, Gr12 | Capability: Custom components based on customer drawings. Processes: Milling, Turning, Drilling, Tapping, etc. |
• As-Machined • Deburred • Polished / Tumbled • Anodizing (Color, Black) • Sandblasted • Passivation |
