Alpha-beta alloys

Grade 5

Common Shapes

Grade 5 Titanium is commonly available in:

  • Sheets and Plates

  • Tubes

  • Extrusions

  • Wire

  • Billet

  • Bars

  • Foil

Characteristics

  • Most commonly used Titanium Alloy 

  • High Strength

  • Heat-treatable

  • Excellent combination of strength, ductility and toughness, as well as good fabricability and weldability

Uses

  • Workhorse alloy 

  • Airframes

  • Landing gear components

  • Pressure Vessels

  • Consumer goods, including watches and spectable frames

  • Jet engine fan blades, compressor blades and rings

  • Prosthetic implants

  • Sports and leisure goods, including golf clubs and bicycle frames

  • Automotive applications

  • 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:

  • Sheets and Plates

  • Tubes and Pipes 

  • Wire

  • Rods

  • Bars

Characteristics

  • Extra Low Interstitial version of Grade 5

  • Improved ductility and fracture toughness, over Grade 5, in saltwater and brine solutions

  • Enhanced strength, toughness and ductility in cryogenic services, in temperatures as low as -255°C

  • Improved stress corrosion cracking resistance

Uses

  • Airframes

  • Prosthetic / Medical implants

  • Cryogenic pressure vessels

  • Offshore hydrocarbon production equipment

  • 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:

  • Sheet and Plates

  • Tubes and Pipes

  • Extrusions

  • Wire

  • Billet

  • Bar

Characteristics

  • Ruthenium enhanced version of Grade 5, offering improved corrosion resistance

  • Excellent toughness in air and seawater.

  • Excellent resistance to localised corrosion in seawater up to 330°C

  • Approved to NACE MR-01-75 standard

Uses

  • Seawater and offshore applications

  • Chemical processing equipment

  • Hydrocarbon production machinery and infrastructure

  • 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:

  • Ingot

  • Billet

  • Bar
  • Wire
  • Forgings

Characteristics

  • Evolution of Grade 5, with Neobium replacing Vanadium to increase biocompatibility

  • Good strength, toughness and ductility 

Uses

  • Medical implants

  • Dental Implants

  • 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:

  • Sheets and Plates

  • Billet

  • Extrusions

  • Bar

Characteristics

  • Higher strength and sectional hardenability, at the cost of lower toughness and ductility, than Grade 5

  • Good strength on large sectional components

  • Heat treatable, with good strength up to 315°C

Uses

  • Airframes

  • Jet engine components

  • 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:

  • Sheets and Plates

  • Billet

  • Extrusions

  • Bar

Characteristics

  • High strength

  • Good toughness

  • Excellent creep resistance

  • Great stress stability up to 540°C

Uses

  • Airframes

  • Sheet sections in afterburners

  • 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:

  • Ingot

  • Bar

  • Billet

  • Forgings

Characteristics

  • Medium strength forging alloy

  • Good creep resistance up tp 400°C

Uses

  • Gas turbine components

  • Jet engine components

  • 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:

  • Ingot

  • Bar

  • Billet

  • Sheets and Plates

  • Wire

Characteristics

  • High strength

  • Fracture-to-toughness properties better than those of Grade 5

  • Excellent superplastic formability

  • Excellent thermal stability

Uses

  • Airframes

  • 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:

  • Ingot

  • Billet

  • Bar

  • Sheets and Plates

Characteristics

  • High Strength

  • Elevated strength and superior hot and superplastic formability to Grade 5

  • Good ductility

  • Good fatigue resistance

Uses

  • Airframes

  • Automotive components

  • Gas turbine components

  • Consumer goods - watches, spectacle frames, jewellery etc.

  • 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:

  • Ingot

  • Bar

  • Billet

Characteristics

  • Very high strength

  • Better strength and creep resistance than Grade 5, up to a service ceiling of 400°C

Uses

  • 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. 

 
 
 
 
 
 
 
 
 
 
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