Titanium Grades
Titanium Grades
Determining the right grade of titanium particularly for new applications might not be immediately obvious. The most common titanium grades and their applications are as follows:
- Grade 2 – This is the most widely used titanium grade and is known for its excellent corrosion resistance, strength, and weldability. It is commonly used in chemical processing, aerospace, medical, and marine applications. Pipes and pipe fittings used in industrial applications are typically made from Grade 2.
- Grade 5 (Ti-6Al-4V) – This grade is the most commonly used titanium alloy and is known for its high strength and corrosion resistance. It is commonly used in aerospace, medical, and industrial applications. Retail good such as bicycle components are often made from Grade 5.
- Grade 9 (Ti-3Al-2.5V) – This grade is known for its high strength and excellent corrosion resistance. It is commonly used in aerospace, medical, and industrial applications.
- Grade 12 (Ti-0.3Mo-0.8Ni) – This grade is known for its high strength and excellent corrosion resistance. It is commonly used in aerospace and industrial applications.
- Grade 23 (Ti-6Al-4V ELI) – This grade is known for its excellent biocompatibility, corrosion resistance, and high strength. It is commonly used in the medical industry for implantable devices such as hip replacements. Almost all medical implants are Grade 23.
Note that this is not an exhaustive list and there are other titanium grades available that may have specific properties that make them suitable for specific applications.
| Grade | Nitrogen, max | Carbon, max | Hydrogen,B,C max | Iron, max | Oxygen, max | Aluminum | Vanadium | Tin | Ruthenium | Palladium | Cobalt | Molybdenum | Chromium | Nickel | Niobium | Zirconium | Silicon | Residuals,D,E,F | max each | Residuals,D,E,F | max total | TitaniumG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.03 | 0.08 | 0.015 | 0.2 | 0.18 | 0.1 | 0.4 | Balance | ||||||||||||||
| 2 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.1 | 0.4 | Balance | ||||||||||||||
| 3 | 0.05 | 0.08 | 0.015 | 0.3 | 0.35 | 0.1 | 0.4 | Balance | ||||||||||||||
| 4 | 0.05 | 0.08 | 0.015 | 0.5 | 0.4 | 0.1 | 0.4 | Balance | ||||||||||||||
| 5 | 0.05 | 0.08 | 0.015 | 0.4 | 0.2 | 5.5–6.75 | 3.5–4.5 | 0.1 | 0.4 | Balance | ||||||||||||
| 6 | 0.03 | 0.08 | 0.015 | 0.5 | 0.2 | 4.0–6.0 | 2.0–3.0 | 0.1 | 0.4 | Balance | ||||||||||||
| 7 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.12–0.25 | 0.1 | 0.4 | Balance | |||||||||||||
| 9 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5–3.5 | 2.0–3.0 | 0.1 | 0.4 | Balance | ||||||||||||
| 11 | 0.03 | 0.08 | 0.015 | 0.2 | 0.18 | 0.12–0.25 | 0.1 | 0.4 | Balance | |||||||||||||
| 12 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.2–0.4 | 0.6–0.9 | 0.1 | 0.4 | Balance | ||||||||||||
| 13 | 0.03 | 0.08 | 0.015 | 0.2 | 0.1 | 0.04–0.06 | 0.4–0.6 | 0.1 | 0.4 | Balance | ||||||||||||
| 14 | 0.03 | 0.08 | 0.015 | 0.3 | 0.15 | 0.04–0.06 | 0.4–0.6 | 0.1 | 0.4 | Balance | ||||||||||||
| 15 | 0.05 | 0.08 | 0.015 | 0.3 | 0.25 | 0.04–0.06 | 0.4–0.6 | 0.1 | 0.4 | Balance | ||||||||||||
| 16 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.04–0.08 | 0.1 | 0.4 | Balance | |||||||||||||
| 17 | 0.03 | 0.08 | 0.015 | 0.2 | 0.18 | 0.04–0.08 | 0.1 | 0.4 | Balance | |||||||||||||
| 18 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5–3.5 | 2.0–3.0 | 0.04–0.08 | 0.1 | 0.4 | Balance | |||||||||||
| 19 | 0.03 | 0.05 | 0.02 | 0.3 | 0.12 | 3.0–4.0 | 7.5–8.5 | 3.5–4.5 | 5.5–6.5 | 3.5–4.5 | 0.15 | 0.4 | Balance | |||||||||
| 20 | 0.03 | 0.05 | 0.02 | 0.3 | 0.12 | 3.0–4.0 | 7.5–8.5 | 0.04–0.08 | 3.5–4.5 | 5.5–6.5 | 3.5–4.5 | 0.15 | 0.4 | Balance | ||||||||
| 21 | 0.03 | 0.05 | 0.015 | 0.4 | 0.17 | 2.5–3.5 | 14.0–16.0 | 2.2–3.2 | 0.15–0.25 | 0.1 | 0.4 | Balance | ||||||||||
| 23 | 0.03 | 0.08 | 0.0125 | 0.25 | 0.13 | 5.5–6.5 | 3.5–4.5 | 0.1 | 0.4 | Balance | ||||||||||||
| 24 | 0.05 | 0.08 | 0.015 | 0.4 | 0.2 | 5.5–6.75 | 3.5–4.5 | 0.04–0.08 | 0.1 | 0.4 | Balance | |||||||||||
| 25 | 0.05 | 0.08 | 0.0125 | 0.4 | 0.2 | 5.6–6.75 | 3.5–4.5 | 0.04–0.08 | 0.3–0.8 | 0 | 0.4 | Balance | ||||||||||
| 26 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.08–0.14 | 0.1 | 0.4 | Balance | |||||||||||||
| 27 | 0.03 | 0.08 | 0.015 | 0.2 | 0.18 | 0.08–0.14 | 0.1 | 0.4 | Balance | |||||||||||||
| 28 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5–3.5 | 2.0–3.0 | 0.08–0.14 | 0.1 | 0.4 | Balance | |||||||||||
| 29 | 0.03 | 0.08 | 0.015 | 0.25 | 0.13 | 5.5-6.5 | 3.5-4.5 | 0.08-0.14 | 0.1 | 0.4 | Balance | |||||||||||
| 30 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.04–0.08 | 0.20–0.80 | 0.1 | 0.4 | Balance | ||||||||||||
| 31 | 0.05 | 0.08 | 0.015 | 0.3 | 0.35 | 0.04–0.08 | 0.20–0.80 | 0.1 | 0.4 | Balance | ||||||||||||
| 32 | 0.03 | 0.08 | 0.015 | 0.25 | 0.11 | 4.5-5.5 | 0.6-1.4 | 0.6-1.4 | 0.6-1.2 | 0.6-1.4 | 0.06-0.14 | 0.1 | 0.4 | Balance | ||||||||
| 33 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | 0.02-0.04 | 0.01-0.02 | 0.1-0.2 | 0.35-0.55 | 0.1 | 0.4 | Balance | ||||||||||
| 34 | 0.05 | 0.08 | 0.015 | 0.3 | 0.35 | 0.02-0.04 | 0.01-0.02 | 0.1-0.2 | 0.35-0.55 | 0.1 | 0.4 | Balance | ||||||||||
| 35 | 0.05 | 0.08 | 0.015 | 0.20-0.80 | 0.25 | 4.0-5.0 | 1.1-2.1 | 1.5-2.5 | 0.20-0.40 | 0.1 | 0.4 | Balance | ||||||||||
| 36 | 0.03 | 0.04 | 0.0035 | 0.03 | 0.16 | 42.0–47.0 | 0.1 | 0.4 | Balance |
Bicycle Parts
Grade 5 (Ti-6Al-4V)
Medical Implants
Grade 23 (Ti-6Al-4V ELI)
Pipe Fittings
Grade 2