Gr5 vs Gr23 Titanium Alloy Bar: Which is Right for You?
Oct 22, 2025
GNEE can provide the form
Titanium bars are widely used in various industries due to their unique properties, including high strength, low weight, and excellent corrosion resistance. Among the different titanium grades available, Grade 5 and Grade 23 are two of the most popular choices. But what exactly sets them apart? Understanding the differences between Grade 5 and Grade 23 titanium bars is essential for making an informed decision on which material best suits your project. In this article, we will explore the key differences between these two titanium alloys, focusing on their composition, properties, and applications.
What is Titanium Grade 5?
Titanium Grade 5, also known as Ti-6Al-4V, is the most commonly used titanium alloy. It is composed of approximately 90% titanium, 6% aluminum, and 4% vanadium. This combination of elements gives Grade 5 titanium bars an excellent balance of strength, lightness, and corrosion resistance. It is often referred to as the "workhorse" of titanium alloys due to its versatility and widespread use in various industries, including aerospace, medical, automotive, and marine.
Key Properties of Grade 5 Titanium Bars:
High Strength: Ideal for demanding structural applications.
Lightweight: Lighter than many other metals, perfect for aerospace use.
Corrosion Resistance: Excellent in saltwater, acidic, and high-temperature environments.
Versatility: Widely used due to ease of fabrication and mechanical strength.
What is Titanium Grade 23?
Titanium Grade 23, or Ti-6Al-4V ELI (Extra Low Interstitials), is a modified version of Grade 5. The primary difference is the reduced content of interstitial elements such as oxygen and iron. These lower levels enhance its ductility and fracture toughness, making it ideal for high-performance applications in the medical and aerospace industries.
Key Properties of Grade 23 Titanium Bars:
Superior Biocompatibility: Preferred for medical implants like hip and dental replacements.
Higher Toughness and Ductility: More resistant to cracking under stress.
Corrosion Resistance: Exceptional in medical and marine environments.
Fatigue Resistance: Excellent for applications requiring precision and longevity.
Key Differences Between Grade 5 and Grade 23 Titanium Bars
| Property | Grade 5 Titanium (Ti-6Al-4V) | Grade 23 Titanium (Ti-6Al-4V ELI) |
|---|---|---|
| Composition | 90% Ti, 6% Al, 4% V | Same as Grade 5, but lower O & Fe |
| Strength | High tensile strength | Similar strength, improved toughness |
| Ductility & Toughness | Moderate | Superior |
| Corrosion Resistance | Excellent | Excellent, especially for medical use |
| Applications | Aerospace, marine, industrial | Medical implants, aerospace components |
| Cost | More affordable | Higher due to extra processing |
When to Use Grade 5 Titanium Bars?
Choose Grade 5 titanium bars for applications where high strength, lightweight, and corrosion resistance are crucial. Ideal for:
Aerospace structures
Automotive parts
Marine hardware
Industrial machinery
When to Use Grade 23 Titanium Bars?
Choose Grade 23 titanium bars for:
Medical implants (hip, dental, orthopedic)
Aerospace components requiring precision
High-performance parts needing ductility and toughness
Though more expensive, Grade 23 is the go-to option for safety-critical and biocompatible uses.
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 |
