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Alpha-beta alloys
Grade 5
Common Shapes
Grade 5 Titanium is commonly available in:
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Sheets and Plates
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Tubes
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Extrusions
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Wire
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Billet
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Bars
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Foil
Characteristics
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Most commonly used Titanium Alloy
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High Strength
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Heat-treatable
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Excellent combination of strength, ductility and toughness, as well as good fabricability and weldability
Uses
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Workhorse alloy
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Airframes
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Landing gear components
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Pressure Vessels
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Consumer goods, including watches and spectable frames
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Jet engine fan blades, compressor blades and rings
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Prosthetic implants
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Sports and leisure goods, including golf clubs and bicycle frames
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Automotive applications
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Marine and seawater applications
Weldability
Grade 5 Titanium Alloy has very good weldability
Common Names
Ti-6Al-4V
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.20, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.40, Aluminium: 5.50-6.75. Vanadium: 3.50-4.50
UNS Number
R56400
Machinability
Grade 5 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Grade 23
Common Shapes
Grade 23 Titanium is commonly available in:
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Sheets and Plates
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Tubes and Pipes
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Wire
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Rods
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Bars
Characteristics
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Extra Low Interstitial version of Grade 5
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Improved ductility and fracture toughness, over Grade 5, in saltwater and brine solutions
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Enhanced strength, toughness and ductility in cryogenic services, in temperatures as low as -255°C
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Improved stress corrosion cracking resistance
Uses
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Airframes
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Prosthetic / Medical implants
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Cryogenic pressure vessels
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Offshore hydrocarbon production equipment
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Spacecraft / Satellites
Weldability
Grade 23 Titanium Alloy has very good weldability
Common Names
Ti-6Al-4V-ELI
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.13, Nitrogen: ≤0.03, Carbon: ≤0.08, Hydrogen: ≤0.0125, Iron: ≤0.25, Aluminium: 5.50-6.50. Vanadium: 3.50-4.50
Uns Number
R56407
Machinability
Grade 5 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Grade 29
Common Shapes
Grade 29 Titanium is commonly available in:
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Sheet and Plates
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Tubes and Pipes
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Extrusions
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Wire
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Billet
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Bar
Characteristics
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Ruthenium enhanced version of Grade 5, offering improved corrosion resistance
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Excellent toughness in air and seawater.
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Excellent resistance to localised corrosion in seawater up to 330°C
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Approved to NACE MR-01-75 standard
Uses
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Seawater and offshore applications
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Chemical processing equipment
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Hydrocarbon production machinery and infrastructure
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Products used in desalination plants
UNS Number
R56404
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.13, Nitrogen: ≤0.03, Carbon: ≤0.08, Hydrogen: ≤0.0125, Iron: ≤0.25, Aluminium: 5.50-6.50. Vanadium: 3.50-4.50 and Ruthenium: 0.08-0.14
Weldability
Grade 29 Titanium Alloy has very good weldability
Machinability
Grade 29 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Common Names
Ti-6Al-4V-0.1Ru ELI
Ti-6Al-7Nb
Common Shapes
Ti-6Al-7Nb Titanium is commonly available in:
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Ingot
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Billet
- Bar
- Wire
- Forgings
Characteristics
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Evolution of Grade 5, with Neobium replacing Vanadium to increase biocompatibility
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Good strength, toughness and ductility
Uses
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Medical implants
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Dental Implants
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Aerospace applications
Weldability
Ti-6Al-7Nb Titanium Alloy has good weldability
UNS Number
R56700
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.20, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.009, Iron: ≤0.25, Tantalum: ≤0.50, Aluminium: 5.50-6.50, and Niobium: 6.50-7.50
Machinability
Ti-6Al-7Nb Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-6Al-6V-2Sn
Common Shapes
Ti-6Al-6V-2Sn is commonly available in:
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Sheets and Plates
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Billet
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Extrusions
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Bar
Characteristics
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Higher strength and sectional hardenability, at the cost of lower toughness and ductility, than Grade 5
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Good strength on large sectional components
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Heat treatable, with good strength up to 315°C
Uses
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Airframes
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Jet engine components
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Equipment used in nuclear reactors
UNS Number
R56620
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.20, Nitrogen: ≤0.04, Carbon: ≤0.05, Hydrogen: ≤0.015, Iron: 0.35-1.00, Copper 0.35-1.00, Tin: 1.50-2.50 Aluminium: 5.00-6.00, and Vanadium: 5.00-6.00
Weldability
Ti-6Al-6V-2Sn Titanium Alloy has poor weldability
Machinability
Ti-6Al-6V-2Sn Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-6Al-2Sn-4Zr-2Mo
Common Shapes
Ti-6Al-2Sn-4Zr-2Mo Titanium is commonly available in:
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Sheets and Plates
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Billet
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Extrusions
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Bar
Characteristics
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High strength
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Good toughness
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Excellent creep resistance
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Great stress stability up to 540°C
Uses
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Airframes
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Sheet sections in afterburners
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Gas turbine components
UNS Number
R54620
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.05, Carbon: ≤0.05, Hydrogen: ≤0.015, Iron: 0.25, Silicon: 0.06-1.10, Molbdenum: 1.80-2.20, Tin: 1.80-2.20, Zirconium: 3.60-4.40 and Aluminium: 5.50-6.50
Weldability
Ti-6Al-2Sn-4Zr-2Mo Titanium Alloy has fair weldability
Machinability
Ti-6Al-2Sn-4Zr-2Mo Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-4Al-4Mo-2Sn-0.5Si
Common Shapes
Ti-4Al-4Mo-2Sn-0.5Si Titanium is commonly available in:
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Ingot
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Bar
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Billet
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Forgings
Characteristics
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Medium strength forging alloy
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Good creep resistance up tp 400°C
Uses
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Gas turbine components
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Jet engine components
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Airframe parts
Weldability
Ti-4Al-4Mo-2Sn-0.5Si Titanium Alloy has very limited weldability
UNS Number
None
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.27, Nitrogen: ≤0.03, Carbon: ≤0.05, Hydrogen: ≤0.015, Iron: ≤0.20, Silicon: ≤0.50, Tin: 1.50-2.50, Molybdenum: 3.00-5.00, and Aluminium: 3.00-5.00
Machinability
Ti-4Al-4Mo-2Sn-0.5Si Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.15Si
Common Shapes
Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.15Si Titanium is commonly available in:
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Ingot
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Bar
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Billet
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Sheets and Plates
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Wire
Characteristics
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High strength
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Fracture-to-toughness properties better than those of Grade 5
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Excellent superplastic formability
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Excellent thermal stability
Uses
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Airframes
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Space Shuttle and Satellite components
Uns Number
R56222
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.03, Carbon: ≤0.05, Hydrogen: ≤0.0125, Iron: ≤0.25, Silicon: 0.12-0.20, Tin: 1.75-2.25, Chromium: 1.75-2.25 Molybdenum: 1.75-2.25, Zirconium: 1.75-2.25 and Aluminium: 5.25-6.25
Weldability
Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.15Si Titanium Alloy has very limited weldability
Machinability
Ti-6Al-2Sn-2Zr-2Mo-2Cr-0.15Si Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-4.5Al-3V-2Mo-2Fe
Common Shapes
Ti-4.5Al-3V-2Mo-2Fe commonly available in:
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Ingot
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Billet
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Bar
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Sheets and Plates
Characteristics
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High Strength
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Elevated strength and superior hot and superplastic formability to Grade 5
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Good ductility
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Good fatigue resistance
Uses
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Airframes
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Automotive components
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Gas turbine components
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Consumer goods - watches, spectacle frames, jewellery etc.
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Sports and recreation equipment, including golf clubs, bicycle frames and mountain climbing equipment
UNS Number
None
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.01, Yttriam: ≤0.005, Iron: 1.70-2.30, Molybdenum: 1.80-2.20, Vanadium: 2.50-3.50 and Aluminium: 4.00-5.00
Weldability
Ti-4.5Al-3V-2Mo-2Fe Titanium Alloy has very limited weldability
Machinability
Ti-4.5Al-3V-2Mo-2Fe Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Ti-5Al-4Cr-4Mo-2Sn-2Zr
Common Shapes
Ti-5Al-4Cr-4Mo-2Sn-2Zr Titanium is commonly available in:
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Ingot
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Bar
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Billet
Characteristics
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Very high strength
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Better strength and creep resistance than Grade 5, up to a service ceiling of 400°C
Uses
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Gas turbine components
UNS Number
R58650
Composition
Alpha-Beta structure Titanium Alloy with alloying elements; 0xygen: 0.08-0.13, Nitrogen: ≤0.04, Carbon: ≤0.05, Hydrogen: ≤0.0125, ≤Iron: 0.30, Zirconium: 1.50-2.50, Tin: 1.50-2.50, Molybdenum: 3.50-4.50, Chromium: 3.50-4.50 and Aluminium: 4.50-5.50
Weldability
Ti-5Al-4Cr-4Mo-2Sn-2Zr Titanium Alloy has extremely limited weldability
Machinability
Ti-5Al-4Cr-4Mo-2Sn-2Zr Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.
Integ Metals // Materials // Titanium // Alpha-Beta
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An Introduction
The best of both worlds, Alpha-Beta Titanium Alloys are a dual phase alloy, featuring high compositions of Alpha friendly Aluminium, but with healthy measures of Beta Stabilisers Vanadium, Tantalum, Niobium and Hydrogen, too. As more Beta Stabilisers are added, so a greater amount of the Beta Phase is retained at lower temperatures. It is extremely common for these alloys to be further strengthened by heat treatment, being quenched from an elevated temperature and subsequently aged at a lower temperature.
Of the Alpha-Beta Alloys, it is Grade 5 which is the poster child, accounting for 50% of all Titanium used, with 70% of this being utilised by the aerospace industry. Alpha-Beta Alloys are also commonly employed as medical implants, in consumer goods and sports equipment.
All grades, shapes and specifications of Alpha-Beta Titanium Alloys are available directly through Integ Metals, so please feel free to read through the information on this page for reference, or contact us directly with your requirements.
