Grade 9 Titanium Tube
stock size: 16*0.9*L, 22.2*0.9*L, 25.4*0.9*L, 25.4*1.2*L, 28.6*1.5*L, 31.8*0.9*L, 35.4*0.9*L, 38.1*0.9*L, 40.5*0.9*L, 45*0.9*L,etc
Product Introduction
Grade 9 titanium tube, often called "half 6-4", is a high-strength titanium alloy made from:
Ti–3Al–2.5V
It delivers an optimal balance between:
Strength (higher than CP titanium)
Formability (better than Grade 5 Ti-6Al-4V)
Weldability
Lightweight performance
CORE VALUE
Grade 9 is designed for high-performance lightweight structures, where:
Strength matters
Weight reduction is critical
Forming and welding are required
It offers:
20–50% higher strength than CP titanium
Superior fabrication performance vs Grade 5
KEY PROPERTIES
High tensile strength
Excellent yield strength
Good ductility and toughness
Excellent corrosion resistance
Easy forming and machining
Excellent weldability
MECHANICAL PERFORMANCE
Tensile Strength: ~620–896 MPa
Yield Strength: ~483–828 MPa
Elongation: ~15%
STANDARDS
ASTM B861 (Seamless Tube)
ASTM B338 (Welded Tube)
MATERIAL SPECIFICATION
Alloy: Ti-3Al-2.5V
Grade: GR9
Condition: Full annealed / Half annealed
Process: Cold rolling / Cold drawing
MANUFACTURING FLOW
Tube billet → Tube rolling → Degreasing → Acid pickling → Annealing → Straightening → Surface finishing → Inspection
SIZE RANGE (BICYCLE GRADE)
Outer Diameter: 16 – 50.8 mm
Wall Thickness: 0.5 – 1.6 mm
Length: 500 – 6000 mm
KEY APPLICATIONS
Bicycle Industry (Main Application)
High-performance bicycle frames
Handle bars
Seat posts
Lightweight structural components
Grade 9 is widely used in professional cycling systems due to its ideal balance of strength and weight.
Industrial & Outdoor Applications
Lightweight structural tubes
Marine and humid environments
Outdoor engineering structures
Corrosion-resistant mechanical parts
PERFORMANCE ADVANTAGES
Lightweight yet high strength
Excellent fatigue resistance
Superior corrosion resistance (sweat, rain, seawater)
Stable mechanical performance
Ideal for long-term outdoor use
ENGINEERING BENEFIT
High-performance structures without the weight penalty of steel or the cost/rigidity limits of higher titanium alloys.
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