Rolled Alloys provides the following information to offer a basic understanding of the various titanium grades and their relative properties.
Titanium comes in two main categories: commercially pure grades and titanium alloy grades. Titanium alloy categories include alpha-titanium, beta-titanium, and alpha-beta titanium, which correspond to different structural phases of the material. The commercially pure grades are classified as Grades 1 through 4. Each grade exhibits distinct variations in allowable element limits and strength levels. More detailed information about the chemical compositions and mechanical properties of these grades is provided below.
| Grade | C | N | O | H | Fe | Ti |
| 1 | 0.08 | 0.03 | 0.18 | 0.015 | 0.2 | Bal |
| 2 | 0.08 | 0.03 | 0.25 | 0.015 | 0.3 | Bal |
| 3 | 0.08 | 0.05 | 0.35 | 0.015 | 0.3 | Bal |
| 4 | 0.08 | 0.05 | 0.40 | 0.015 | 0.5 | Bal |
*All values are maximums unless a range is provided
| Grade | Tensile (ksi) | Yield (ksi) | Elongation (%) |
| 1 | 35 | 20 | 24 |
| 2 | 50 | 40 | 20 |
| 3 | 65 | 55 | 18 |
| 4 | 80 | 70 | 15 |
*All values are minimums per ASTM B348
Three titanium alloys closely resemble commercially pure titanium being Grades 7, 11, and 12. Grade 7 is comparable to Grade 2 in terms of mechanical properties but boasts superior corrosion resistance due to the addition of up to 0.25% Pd, making it exceptionally resilient against reducing acids. Similarly, Grade 11 shares similarities with Grade 1 but includes an addition of up to 0.25% Pd, enhancing its resistance to crevice corrosion and reducing acids. Grade 12, on the other hand, features slightly higher minimum mechanical property requirements than Grade 3 but lower than Grade 4. What sets Grade 12 apart from the commercially pure grades is its composition, containing 0.60-0.90% nickel content and 0.20-0.40% molybdenum. The tables below present the chemical compositions and mechanical properties of these alloys.
Grade | C | N | O | H | Fe | Pd | Ni | Mo | Ti |
7 | 0.08 | 0.03 | 0.25 | 0.015 | 0.30 | 0.12-0.25 | – | – | Bal |
11 | 0.08 | 0.03 | 0.18 | 0.015 | 0.20 | 0.12-0.25 | – | – | Bal |
12 | 0.08 | 0.03 | 0.25 | 0.015 | 0.30 | – | 0.60-0.90 | 0.20-0.40 | Bal |
*All values are maximums unless a range is provided
Grade | Tensile (ksi) | Yield (ksi) | Elongation (%) |
7 | 50 | 40 | 20 |
11 | 35 | 20 | 24 |
12 | 70 | 50 | 18 |
*All values are minimums per ASTM B348
The next alloy, often called “6-4” or Grade 5, is the most widely used titanium alloy globally, constituting over half of the world’s titanium production. Another widely utilized variation is 6-4 ELI (Extra Low Interstitial), recognized as Grade 23, predominantly employed in the medical implant industry. All 6-4 alloys belong to the alpha-beta alloy category and can be heat-treated to achieve a wide range of properties, depending on the heat treatment applied. However, it’s worth noting that 6-4 ELI presents challenges in achieving minimum mechanical heat-treat properties due to its strict maximum oxygen requirement. Please consult the table below for detailed information on chemistry and typical mechanical properties.
Grade | Al | V | C | N | O | H | Fe | Ti |
5 | 5.50-6.75 | 3.50-4.50 | 0.08 | 0.05 | 0.20 | 0.015 | 0.40 | Bal |
5 STA | 5.50-6.75 | 3.50-4.50 | 0.08 | 0.05 | 0.20 | 0.015 | 0.40 | Bal |
23 | 5.50-6.50 | 3.50-4.50 | 0.08 | 0.03 | 0.13 | 0.0125 | 0.25 | Bal |
*All values are maximums unless a range is provided
Grade | Tensile (ksi) | Yield (ksi) | Elongation (%) |
5 | 130 | 120 | 10 |
5 STA | 130 | 120 | 10 |
23 | 120 | 110 | 10 |
*All values are minimums per ASTM B348
For more specific titanium questions, give us a call at 800-521-0332 or email us at help-tech@rolledalloys.com
Titanium Grade Chemistry Table
| Grade | C | O | N | H | Fe | Al | V | Pd | Ru | Ni | Mo | Cr | Co | Zr | Nb | Sn | Si | Ti |
| 1 | 0.08 | 0.18 | 0.03 | 0.015 | 0.20 | – | – | – | – | – | – | – | – | – | – | – | – | Bal |
| 2 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | – | – | – | – | – | – | – | – | – | – | Bal |
| 3 | 0.08 | 0.35 | 0.05 | 0.015 | 0.30 | – | – | – | – | – | – | – | – | – | – | – | – | Bal |
| 4 | 0.08 | 0.10 | 0.05 | 0.015 | 0.50 | – | – | – | – | – | – | – | – | – | – | – | – | Bal |
| 5 | 0.08 | 0.20 | 0.05 | 0.015 | 0.40 | 5.50-6.75 | 3.50-4.50 | – | – | – | – | – | – | – | – | – | – | Bal |
| 6 | 0.08 | 0.20 | 0.03 | 0.015 | 0.50 | 4.00-6.00 | – | – | – | – | – | – | – | – | – | 2.00-3.00 | – | Bal |
| 7 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | 0.12-0.25 | – | – | – | – | – | – | – | – | – | Bal |
| 9 | 0.08 | 0.15 | 0.03 | 0.015 | 0.25 | 2.50-3.50 | 2.00-3.00 | – | – | – | – | – | – | – | – | – | – | Bal |
| 11 | 0.08 | 0.18 | 0.03 | 0.015 | 0.20 | – | – | 0.12-0.25 | – | – | – | – | – | – | – | – | – | Bal |
| 12 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | – | – | 0.60-0.90 | 0.20-0.40 | – | – | – | – | – | – | Bal |
| 13 | 0.08 | 0.1 | 0.03 | 0.015 | 0.20 | – | – | – | 0.04-0.06 | 0.40-0.60 | – | – | – | – | – | – | – | Bal |
| 14 | 0.08 | 0.15 | 0.03 | 0.015 | 0.30 | – | – | – | 0.04-0.06 | 0.40-0.60 | – | – | – | – | – | – | – | Bal |
| 15 | 0.08 | 0.25 | 0.05 | 0.015 | 0.30 | – | – | – | 0.04-0.06 | 0.40-0.60 | – | – | – | – | – | – | – | Bal |
| 16 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | 0.04-0.08 | – | – | – | – | – | – | – | – | – | Bal |
| 17 | 0.08 | 0.18 | 0.03 | 0.015 | 0.20 | – | – | 0.04-0.08 | – | – | – | – | – | – | – | – | Bal | |
| 18 | 0.08 | 0.15 | 0.03 | 0.015 | 0.25 | 2.50-3.50 | 2.00-3.00 | 0.04-0.08 | – | – | – | – | – | – | – | – | – | Bal |
| 19 | 0.05 | 0.12 | 0.03 | 0.02 | 0.30 | 3.00-4.00 | 7.50-8.50 | – | – | – | 3.50-4.50 | 5.50-6.50 | – | 3.50-4.50 | – | – | – | Bal |
| 20 | 0.05 | 0.12 | 0.03 | 0.02 | 0.30 | 3.00-4.00 | 7.50-8.50 | 0.04-0.08 | – | – | 3.50 | 5.50-6.50 | – | – | – | – | – | Bal |
| 21 | 0.05 | 0.17 | 0.03 | 0.015 | 0.40 | 2.50-3.50 | – | – | – | – | 4.50 | – | – | – | 2.20-3.20 | – | 0.15-0.25 | Bal |
| 23 | 0.08 | 0.13 | 0.03 | 0.0125 | 0.25 | 5.50-6.50 | 3.50-4.50 | – | – | – | 14.00-16.00 | – | – | – | – | – | – | Bal |
| 24 | 0.08 | 0.20 | 0.05 | 0.015 | 0.40 | 5.50-6.75 | 3.50-4.50 | 0.04-0.08 | – | – | – | – | – | – | – | – | – | Bal |
| 25 | 0.08 | 0.20 | 0.05 | 0.015 | 0.40 | 5.50-6.75 | 3.50-4.50 | 0.04-0.08 | – | 0.30-0.08 | – | – | – | – | – | – | – | Bal |
| 26 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | – | 0.08-0.14 | – | – | – | – | – | – | – | – | Bal |
| 27 | 0.08 | 0.18 | 0.03 | 0.015 | 0.20 | – | – | – | 0.08-0.14 | – | – | – | – | – | – | – | – | Bal |
| 28 | 0.08 | 0.15 | 0.03 | 0.015 | 0.25 | 2.50-3.50 | 2.00-3.00 | – | 0.08-0.14 | – | – | – | – | – | – | – | – | Bal |
| 29 | 0.08 | 0.13 | 0.03 | 0.0125 | 0.25 | 5.50-6.50 | 3.50-4.50 | – | 0.08-0.14 | – | – | – | – | – | – | – | – | Bal |
| 30 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | 0.04-0.08 | – | – | – | – | 0.20-0.80 | – | – | – | – | Bal |
| 31 | 0.08 | 0.35 | 0.05 | 0.015 | 0.30 | – | – | 0.04-0.08 | – | – | – | – | 0.20-0.80 | – | – | – | – | Bal |
| 32 | 0.08 | 0.11 | 0.03 | 0.015 | 0.25 | 4.50-5.50 | 0.60-1.40 | – | – | – | 0.60-1.20 | – | – | 0.60-1.40 | – | 0.60-1.40 | 0.60-0.14 | Bal |
| 33 | 0.08 | 0.25 | 0.03 | 0.015 | 0.30 | – | – | 0.01-0.02 | 0.02-0.04 | 0.35-0.55 | – | 0.10-0.20 | – | – | – | – | – | Bal |
| 34 | 0.08 | 0.35 | 0.05 | 0.015 | 0.30 | – | – | 0.01-0.02 | 0.02-0.04 | 0.35-0.55 | – | 0.10-0.20 | – | – | – | – | – | Bal |
| 35 | 0.08 | 0.25 | 0.05 | 0.015 | 0.20-0.80 | 4.00-5.00 | 1.10-2.10 | – | – | – | 1.50-2.50 | – | – | – | – | – | 0.20-0.40 | Bal |
| 36 | 0.04 | 0.16 | 0.03 | 0.015 | 0.03 | – | – | – | – | – | – | – | – | – | 42.00-47.00 | – | – | Bal |
| 37 | 0.08 | 0.25 | 0.03 | 0.015 | 1.20-1.80 | 1.00-2.00 | – | – | – | – | – | – | – | – | – | – | Bal | |
| 38 | 0.08 | 0.20-0.30 | 0.03 | 0.015 | 3.50-4.50 | 2.00-3.00 | – | – | – | – | – | – | – | – | – | Bal |
Titanium Grade Mechanical Property Table
Grade | Tensile (ksi) | Yield (ksi) | Elongation (%) |
1 | 35 | 20 | 24 |
2 | 50 | 40 | 20 |
2H | 58 | 40 | 20 |
3 | 65 | 55 | 18 |
4 | 80 | 70 | 15 |
5 | 130 | 150 | 10 |
6 | 120 | 115 | 10 |
7 | 50 | 40 | 20 |
7H | 58 | 40 | 20 |
9 | 90 | 70 | 15 |
9D | 90 | 70 | 12 |
11 | 35 | 20 | 24 |
12 | 70 | 50 | 18 |
13 | 40 | 25 | 24 |
14 | 60 | 40 | 20 |
15 | 70 | 55 | 18 |
16 | 50 | 40 | 20 |
16H | 58 | 40 | 20 |
17 | 35 | 20 | 24 |
18 | 90 | 70 | 15 |
18D | 90 | 70 | 12 |
19E | 115 | 110 | 15 |
19F | 135 | 130 to 159 | 10 |
19G | 165 | 160 to 185 | 5 |
20E | 115 | 110 | 15 |
20F | 135 | 130 to 159 | 10 |
20G | 165 | 160 to 185 | 5 |
21E | 115 | 110 | 15 |
21F | 140 | 130 to 159 | 10 |
21G | 170 | 160 to 185 | 8 |
23 | 120 | 110 | 10 |
23D | 120 | 110 | 7.5, 6.0 |
24 | 130 | 120 | 10 |
25 | 130 | 120 | 10 |
26 | 50 | 40 | 20 |
26H | 58 | 40 | 20 |
27 | 35 | 20 | 24 |
28 | 90 | 70 | 15 |
28D | 90 | 70 | 12 |
29 | 120 | 110 | 10 |
29D | 120 | 110 | 7.5, 6.0 |
30 | 50 | 40 | 20 |
31 | 65 | 55 | 18 |
32 | 100 | 85 | 10 |
33 | 50 | 40 | 20 |
34 | 65 | 55 | 18 |
35 | 130 | 120 | 5 |
36 | 65 | 60 to 95 | 10 |
37 | 50 | 31 | 20 |
38 | 130 | 115 | 10 |
*All values are minimums per ASTM B348
D Properties for material in transformed-beta condition.
E Properties for solution treated condition.
F Properties for solution treated and aged conditionโModerate strength (determined by aging temperature).
G Properties for solution treated and aged conditionโHigh strength (determined by aging temperature).
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