BOZE CNC Ti | Alpha-Beta Alloy

Grade 9 – Ti-3Al-2.5V Titanium Alloy Grade 9

Ti-3Al-2.5V (Grade 9, UNS R56320) — a medium-strength alpha-beta titanium alloy offering an exceptional combination of formability and strength. Widely used for aerospace hydraulic tubing, sports equipment, and lightweight structural applications.

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Entity Definition

What is Grade 9 Titanium (Ti-3Al-2.5V)?

Grade 9 (Ti-3Al-2.5V) is a medium-strength alpha-beta titanium alloy that provides a balance of strength and formability superior to CP titanium grades while being more readily formable than Grade 5 (Ti-6Al-4V). It is particularly valued for its excellent cold formability, making it the standard material for aerospace hydraulic and pneumatic tubing systems.

Classification

Alpha-Beta Titanium Alloy (α+β)
UNS Number

UNS R56320

Common Names

Ti-3Al-2.5V Grade 9 UNS R56320 Ti-3-2.5 Half 6-4

Key Characteristics

  • Excellent cold formability — superior to Grade 5 (Ti-6Al-4V)
  • Good strength-to-weight ratio between CP grades and Ti-6Al-4V
  • Outstanding corrosion resistance — equivalent to CP titanium
  • Good weldability with proper process controls
  • Preferred material for thin-wall seamless tubing
  • Excellent fatigue strength in tubular form
Applicable Standards

Applicable Standards

Grade 9 titanium conforms to the following international material standards:

ASTM B265 — Sheet, Strip, and Plate
ASTM B348 — Bars and Billets
ASTM B381 — Forgings
ASTM B861 — Seamless Pipe and Tube
AMS 4944 — Seamless Hydraulic Tubing
AMS 4945 — Welded Hydraulic Tubing
DIN 17851 — Ti-3Al-2.5V
MIL-T-9046 — Titanium Alloy Tubing
Material Properties

Mechanical & Physical Properties

Typical room-temperature properties for Grade 9 Ti-3Al-2.5V (annealed condition):

Tensile Strength (min) 620 MPa (90 ksi)
Yield Strength 0.2% Offset (min) 520 MPa (75 ksi)
Elongation (min) 15%
Reduction of Area 30%
Hardness (HRC) ≤ 30 HRC
Density 4.48 g/cm³ (0.162 lb/in³)
Elastic Modulus 100 GPa (14.5 × 10⁶ psi)
Melting Point 1,668°C (3,034°F)
Thermal Conductivity 8.5 W/(m·K)
Max Service Temperature 316°C (600°F)
Bend Radius (tube, min) 2D to 3D depending on wall thickness
Processing Methods

Available Processing Methods

Grade 9 Ti-3Al-2.5V can be processed using the following manufacturing techniques:

Cold forming — Excellent; can be bent into tight radii without cracking
Tube bending — Rotary draw bending, press bending, and roll bending all applicable
CNC machining — Good; easier to machine than Grade 5 (Ti-6Al-4V)
TIG welding — Good; requires matching filler metal and inert gas shielding
Laser welding — Acceptable for thin-wall tubing
Orbital TIG welding — Standard method for tube butt joints
Hydroforming — Excellent formability for complex tube shapes
Annealing — At 700–790°C (1,290–1,450°F) followed by air cooling
Chemical pickling — Good response to standard HF/HNO₃ solutions
Downstream Products

Typical Products & Components

Grade 9 Ti-3Al-2.5V is commonly fabricated into the following downstream products:

Aerospace hydraulic tubing — fluid power lines, landing gear systems
Aerospace pneumatic ducting and bleed air systems
Instrumentation tubing for chemical and pharmaceutical plants
Bicycle frames and handlebars
Golf club shafts
Automotive exhaust tubing and muffler components
Heat exchanger tubing in corrosive environments
Seawater piping systems requiring lightweight corrosion-resistant tubing
Scuba tank liners and lightweight pressure vessels
Industries

Primary Industries

Grade 9 Ti-3Al-2.5V serves as a material of choice across these industries:

Aerospace — Hydraulic systems, pneumatic ducting, fuel lines
Chemical processing — Instrumentation tubing, heat exchanger tubing
Sports & recreation — Bicycle frames, golf shafts, tennis rackets
Automotive — Performance exhaust systems, roll cages
Marine — Seawater piping, instrument enclosures
Oil & gas — Control line tubing, chemical injection lines
Alternative Materials

Alternative Materials

Depending on application requirements, Grade 9 may be substituted by:

Grade 2 (CP-Ti) — Lower strength but better formability for less demanding applications
Grade 5 (Ti-6Al-4V) — Higher strength but significantly less formable
Grade 21 (Ti-15V-3Cr-3Sn-3Al) — Higher strength alternative for thin-wall applications
304L Stainless Steel — Lower cost tubing material with good formability
AISI 4130 Chromoly Steel — Higher strength-to-cost ratio for bicycle frames
Why BOZE CNC Ti

Why Choose Us for This Grade

BOZE CNC Ti specializes in Grade 9 titanium tubing assemblies and machined components with full material traceability and AS9100D quality systems.

Related Components

6 precision CNC machined components manufactured from Grade 9 - Ti-3Al-2.5V Titanium Alloy

Titanium Bleed Air Duct

Engine bleed air duct (Grade 9 Ti tube)

5-axis CNC roughing for pneumatic system geometryHeat treatment (STA) with Class 6g gaugeWire EDM contour profiling with Class 6g gaugeCMM per AS9102 with Class 6g gauge

Titanium Endoscope Sheath

Rigid endoscope outer protective sheath

CNC swiss turning for surgical instruments geometryCryogenic deburring for net-shape toleranceUltrasonic clean Class 10k for net-shape toleranceSterile packaging for net-shape tolerance

Titanium Engine Pylon Bracket

Engine mounting pylon bracket/lug

5-axis CNC roughing for engine component geometryHeat treatment (STA) at 200W fiber laserWire EDM contour profiling at 200W fiber laserCMM per AS9102 at 200W fiber laser

Titanium Environmental Control Duct

ECS ducting for cabin pressurization

5-axis CNC roughing for pneumatic system geometryHeat treatment (STA) for net-shape toleranceWire EDM contour profiling for net-shape toleranceCMM per AS9102 for net-shape tolerance

Titanium Spinal Fixation Rod

Spinal fixation connection rod (Grade 9 / Beta-Ti)

CNC swiss turning for spine fixation geometryCryogenic deburring with 0.5mm corner radiusUltrasonic clean Class 10k with 0.5mm corner radiusSterile packaging with 0.5mm corner radius

Titanium Surgical Retractor Blade

Lightweight surgical retractor blade

CNC swiss turning for surgical instruments geometryCryogenic deburring with SPC samplingUltrasonic clean Class 10k with SPC samplingSterile packaging with SPC sampling

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About Boze Titanium Manufacturing Center

One Metal. One Focus. Infinite Precision.

Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.

Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.

AS9100D ISO 13485 ISO 9001 500+ Clients 15+ Years OEM/ODM
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