BOZE CNC Ti | Alpha-Beta Alloy

Grade 5 – Ti-6Al-4V Titanium Alloy Grade 5

Ti-6Al-4V (Grade 5, UNS R56400) — the most widely specified titanium alloy worldwide, accounting for approximately 50% of global titanium consumption. This alpha-beta alloy delivers an exceptional strength-to-weight ratio with excellent corrosion resistance up to 400°C.

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Entity Definition

What is Grade 5 Titanium (Ti-6Al-4V)?

Grade 5 (Ti-6Al-4V) is the most widely used titanium alloy, accounting for approximately 50% of all titanium consumption globally. It is an alpha-beta alloy containing 6% aluminum (alpha stabilizer) and 4% vanadium (beta stabilizer), providing an excellent balance of strength, ductility, fracture toughness, and corrosion resistance at temperatures up to 400°C (750°F).

Classification

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

UNS R56400

Common Names

Ti-6Al-4V Grade 5 UNS R56400 Ti64 AMS 4928 ASTM B265 Grade 5

Key Characteristics

  • Best combination of strength, weight, and corrosion resistance among titanium alloys
  • Heat treatable — strength can be tailored via solution treatment and aging
  • Excellent fatigue properties for cyclic loading applications
  • Good weldability with proper filler metal and shielding
  • Service temperature up to 400°C (750°F) in oxidizing environments
  • Industry standard for aerospace structural components
Applicable Standards

Applicable Standards

Grade 5 titanium conforms to the following international material standards:

ASTM B265 — Sheet, Strip, and Plate
ASTM B348 — Bars and Billets
ASTM B381 — Forgings
ASTM F136 — Wrought Titanium-6Al-4V ELI for Surgical Implants
ASTM F1472 — Wrought Titanium-6Al-4V for Surgical Implants
AMS 4911 — Sheet, Strip, and Plate
AMS 4928 — Bars, Wire, and Forgings
AMS 4967 — Bars and Forgings (Solution Heat Treated and Aged)
ISO 5832-3 — Implants for Surgery
DIN 17851 — Ti-6Al-4V
NACE MR0175 / ISO 15156 — Oilfield Equipment
Material Properties

Mechanical & Physical Properties

Typical room-temperature properties for Grade 5 Ti-6Al-4V (annealed condition, unless noted):

Tensile Strength (min, annealed) 895 MPa (130 ksi)
Tensile Strength (STA condition) 1,070 MPa (155 ksi)
Yield Strength 0.2% Offset (min, annealed) 828 MPa (120 ksi)
Yield Strength 0.2% Offset (STA) 1,000 MPa (145 ksi)
Elongation (min, annealed) 10%
Elongation (STA) 8%
Reduction of Area 25%
Hardness (HRC, annealed) ≤ 36 HRC
Hardness (HRC, STA) ≤ 41 HRC
Density 4.43 g/cm³ (0.160 lb/in³)
Elastic Modulus 114 GPa (16.5 × 10⁶ psi)
Melting Point 1,668°C (3,034°F)
Thermal Conductivity 7.2 W/(m·K)
Electrical Resistivity 170 µΩ·cm
Max Service Temperature 400°C (750°F)
Fracture Toughness KIC (annealed) 50–65 MPa√m
Processing Methods

Available Processing Methods

Grade 5 Ti-6Al-4V can be processed using the following manufacturing techniques:

CNC machining — Fair to good with sharp carbide tools, rigid setups, and heavy coolant flow
5-axis CNC machining — Ideal for complex aerospace structural components and impellers
Wire EDM — Suitable for intricate cutouts and hard-to-machine geometries
TIG welding — Requires matching filler metal (ERTi-5) and strict inert gas shielding
Laser beam welding — Good weld quality with proper joint design and shielding
Electron beam welding — Excellent for deep penetration welds in vacuum
Vacuum annealing — At 700–800°C (1,300–1,475°F) to relieve residual stresses
Solution treatment & aging (STA) — Solution at 920–960°C, water quench, age at 480–590°C
Hot isostatic pressing (HIP) — At 920°C / 100 MPa to eliminate internal porosity
Forging — Alpha-beta forging at 920–980°C or beta forging at 1,040–1,120°C
Hot forming — At 730–815°C (1,350–1,500°F)
Chemical milling — HF/HNO₃ etching for weight reduction
Downstream Products

Typical Products & Components

Grade 5 Ti-6Al-4V is commonly fabricated into the following downstream products:

Aerospace structural components — wing boxes, fuselage frames, landing gear
Gas turbine engine components — fan blades, compressor disks, casings
Airframe fasteners — bolts, nuts, rivets (often in STA condition)
Orthopedic implants — hip stems, knee components, bone plates, screws
Dental implants and prostheses
Chemical processing equipment — high-pressure reactors, valves
Marine propellers and propulsion shafts
Automotive connecting rods, valves, and suspension springs
Oil & gas downhole tools and completion equipment
Sports equipment — golf club heads, bicycle frames, tennis rackets
Industries

Primary Industries

Grade 5 Ti-6Al-4V serves as a material of choice across these industries:

Aerospace — Airframes, engines, fasteners (largest consuming sector)
Medical — Orthopedic and dental implants, surgical instruments
Defense & military — Armor, aircraft components, naval systems
Chemical processing — High-performance process equipment
Oil & gas — Downhole tools, subsea equipment, piping
Marine — Propellers, shafts, seawater systems
Automotive — Performance and racing components
Power generation — Steam turbine blades, heat exchanger components
Sports & recreation — High-end sporting goods
Alternative Materials

Alternative Materials

Depending on application requirements, Grade 5 may be substituted by:

Grade 23 (Ti-6Al-4V ELI) — Improved fracture toughness and ductility for medical and cryogenic applications
Grade 6 (Ti-5Al-2.5Sn) — Better elevated-temperature performance for specific aerospace applications
Grade 19 (Ti-10V-2Fe-3Al) — Higher strength beta alloy for forging applications
INCONEL 718 — Higher temperature capability for turbine engine applications at higher weight
17-4PH Stainless Steel — Lower cost alternative for less demanding environments
7075-T6 Aluminum — Lighter but lower strength and temperature capability
Why BOZE CNC Ti

Why Choose Us for This Grade

BOZE CNC Ti is a leading precision manufacturer of Grade 5 Ti-6Al-4V components, trusted by aerospace OEMs, medical device companies, and industrial equipment manufacturers worldwide. Our fully integrated facility sources 100% certified Ti-6Al-4V stock — bars, forgings, plate, and sheet — and transforms them into complex, high-tolerance components using state-of-the-art 5-axis CNC machining centers, precision turning, and wire EDM. Every component is produced under AS9100D and ISO 9001:2015 quality systems, with full material traceability from mill to finished part. Our engineering team provides 24-hour DFM review and competitive quoting, backed by decades of metallurgical expertise in titanium processing.

Frequently Asked Questions

Common questions from engineers about this titanium grade and our precision machining capabilities.

What is Grade 5 titanium (Ti-6Al-4V) and what makes it the most widely used titanium alloy?

Grade 5 (Ti-6Al-4V) is an alpha-beta titanium alloy containing 6% aluminum and 4% vanadium. It accounts for approximately 50% of global titanium consumption due to its exceptional strength-to-weight ratio, corrosion resistance, and heat treatability up to 400°C. It is the default choice for aerospace structures, medical implants, and high-performance industrial components.

What machining tolerances can you hold on Grade 5 titanium components?

We consistently achieve machining tolerances up to ±0.005 mm (±0.0002 in) on Grade 5 Ti-6Al-4V using our 5-axis DMG Mori and Mazak machining centers with high-pressure coolant systems. All critical dimensions are verified by CMM inspection per AS9102 first article requirements.

What certifications do you provide with machined Grade 5 titanium parts?

Every order includes EN 10204 Type 3.1 Material Test Reports (MTRs) documenting chemical composition and mechanical properties. CMM dimensional inspection reports, surface finish measurements, and material traceability documentation are provided. Aerospace orders include AS9102 first article inspection and NADCAP NDT reports upon request.

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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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