Titanium square tubes are widely used in aerospace, medical, marine, and industrial applications due to their high strength-to-weight ratio, corrosion resistance, and biocompatibility. However, selecting the right titanium square tube dimensions and specifications is crucial for performance and cost-efficiency.
This guide covers:
✅ Standard titanium square tube sizes (ASTM standards)
✅ Key specifications (grades, wall thickness, tolerances)
✅ How to choose the right dimensions for your project
✅ Industry applications and best practices
1. Standard Titanium Square Tube Dimensions
Titanium square tubes come in various sizes, typically defined by:
Outer dimensions (OD) – Width × Height (e.g., 10mm × 10mm, 1" × 1")
Wall thickness – Ranging from 0.5mm to 10 mm+ (common: 1mm–5mm)
Length – Standard lengths (3m, 6m) or custom-cut sizes
Common Sizes (ASTM B338 Standard)
Size (mm) Wall Thickness (mm) Typical Grade
10×10 0.5 – 2.0 Grade 2, Grade 5
20×20 1.0 – 3.0 Grade 2, Grade 9
30×30 1.5 – 5.0 Grade 5, Grade 12
50×50 2.0 – 8.0 Grade 5, Grade 7
Note: Custom sizes are available from specialized manufacturers.
2. Key titanium square tube dimensions and specifications
A. Material Grades
Grade 2 (Commercially Pure Titanium) – Excellent corrosion resistance, used in chemical processing.
Grade 5 (Ti-6Al-4V) – High strength, common in aerospace and medical implants.
Grade 9 (Ti-3Al-2.5V) – Good weldability, used in hydraulic systems.
Grade 12 (Ti-0.3Mo-0.8Ni) – Enhanced corrosion resistance for marine applications.
B. Wall Thickness & Tolerances
Tight tolerances (±0.1mm) are critical for precision engineering.
Thin-wall tubes (0.5–2mm) are lightweight but require careful handling.
Thick-wall tubes (5 mm+) provide structural support for heavy-duty use.
C. Surface Finish Options
Mill finish – As-manufactured, slightly rough.
Polished finish – Smooth, ideal for medical devices.
Anodized – Improves wear resistance and aesthetics.
3. How to Choose the Right Titanium Square Tube
Step 1: Define Your Application
Aerospace? → High-strength Grade 5 with tight tolerances.
Medical implants? → Grade 2 or Grade 5, polished finish.
Marine environments? → Grade 12 for superior corrosion resistance.
Step 2: Check Mechanical Properties
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
Grade 2 345 275 20
Grade 5 895 828 10
Grade 12 483 345 18
Step 3: Verify Certifications
ASTM B338 (Standard for seamless & welded titanium tubes)
AMS 4928 (Aerospace material standard)
ISO 5832-2 (Medical-grade titanium)
4. Industry Applications
✔ Aerospace – Lightweight structural components (Grade 5)
✔ Medical – Surgical instruments, implants (Grade 2, Grade 5)
✔ Chemical Processing – Corrosion-resistant piping (Grade 12)
✔ Automotive – High-performance exhaust systems (Grade 9)
5. Where to Buy & Supplier Tips
Look for ISO-certified manufacturers for guaranteed quality.
Compare prices per kg/meter – Grade 5 is more expensive than Grade 2.
Request material test reports (MTRs) to verify composition.
Conclusion
Choosing the right titanium square tube dimensions and specifications ensures optimal performance in your application. Engineers and buyers should consider material grade, wall thickness, tolerances, and certifications before purchasing.
Need custom titanium square tubes? Contact trusted suppliers with ASTM/AMS certifications for the best results. Email:linhui@lhtitanium.com
