Alpha & Near-alpha alloys

Grade 12

Common Shapes

​

Grade 12 Titanium is commonly available in:

​

  • Sheets and Plates

  • Welded Tubes and Pipes 

  • Wire

  • Billet

  • Ingot

  • Forgings

Characteristics

​​

  • Good strength

  • Meets ASME code for both strength and pressure at elevated temperatures

  • Excellent crevice corrosion resistance

  • Advanced resistance to chlorides

Uses

​

  • Chemical processing equipment

  • Desalination plant equipment

  • Geothermal brine energy extraction

  • Hydrometallurgical extraction

  • On/Offshore Hydrocarbon refining/production

  • Marine components

  • Aircraft components

  • Pumps

  • Valves

Weldability

​

Grade 12 Titanium has excellent welding characteristics

Machinability

​

Grade 12 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.

UNS Number

​

R53400

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.25, Nitrogen: ≤0.03, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.30, Nickel: 0.60-0.90, Molybdenum: 0.20-0.40

Ti-5Al-2Sn(-ELI)

Common Shapes

​

Ti-5Al-2Sn(-ELI) Titanium is commonly available in:

​

  • Ingot

  • Billet

  • Bars

  • Rod

  • Sheet & Plate

Characteristics

​​

  • Extra Low Interstitial version of Grade 6

  • Good toughness and strength in cryogenic use

  • Used in cryogenic vessels as low as -255°C

​

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.20, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.02, Iron: ≤0.50, Aluminium: 4.00-6.00, Selenium: 2.00-3.00. 

Uses

​

  • Cryogenic applications

  • Airframes

  • Jet engine components

  • Gas turbine components

  • Space vehicles

Weldability

​

Ti-5Al-2Sn(ELI) Titanium has excellent welding characteristics.

Machinability

​

Ti-5Al-2Sn(ELI) Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.

UNS Number

​

R54521

Grade 8

Common Shapes

​

Grade 8 Titanium is commonly available in:

​

  • Sheet

  • Ingot

  • Billet

  • Bar

Characteristics

​​

  • Highly creep resistant​

  • High strength up to 455°C

  • Lowest density and highest modulus of all Titanium alloys

Uses

​

  • Gas turbine components

  • Jet engine fan and compressor blades

UNS Number

​

R54810

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.18, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.30, Aluminium: 7.35-8.35, Molybdenum: 0.75-1.25, Vanadium 0.75-1.25 

Weldability

​

Grade 8 Titanium has good weldability.

Machinability

​

Grade 8 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-0.1Si

Common Shapes

​

Ti-6Al-2Sn-4Zr-2Mo-0.1Si Titanium is commonly available in:

​

  • Ingot

  • Bar

  • Billet

  • Sheet

Characteristics

​​

  • Great strength 

  • Good stability

  • Excellent creep resistance up to 550°C

​

Uses

​

  • Airframes

  • Automotive components

  • Gas turbine components

Weldability

​

Ti-6Al-2Sn-4Zr-2Mo-0.1Si Titanium has fair weldability.

UNS Number

​

R54620

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.05, Carbon: ≤0.10, Hydrogen: 0.0125-0.015, Iron: ≤0.25, Aluminium: 5.50-6.50, Selenium: 1.80-2.20, Zirconium: 3.60-4.40, Molybdenum: 1.80-2.20, Silicon: 0.06-0.10 

Machinability

​

Ti-6Al-2Sn-4Zr-2Mo-0.1Si 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 & Near-Alpha
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Grade 9

Common Shapes

​

Grade 9 Titanium is commonly available in:

​

  • Plate

  • Tubes and Pipes 

  • Seamless Tube

  • Foil

  • Wire

  • Ingot

  • Billet

Characteristics

​​

  • Good strength

  • Highest strength design allowables under code for pressure vessels

  • Good cold fabricability

  • 20-50% stronger than CP grades

  • More formable and weldable than Grade 5

  • Excellent combination of strength, weldability and formability

​

Uses

​

  • Ducting and tubing for use in aircraft

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

  • Products for ships and marine use

  • Sports and recreation equipment, including golf clubs and bicycle frames

  • Foil for honeycomb applications

Weldability

​

Grade 9 Titanium has good welding characteristics.

UNS Number

​

R56320

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.02, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.25, Aluminium: 2.50-3.50, Vanadium: 0.20-0.30

Machinability

​

Grade 9 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-3Al-2.5V

Grade 18

Common Shapes

​

Grade 18 Titanium is commonly available in:

​

  • Plates

  • Welded Tubes and Pipes 

  • Wire

  • Seamless Tubes

  • Ingot

  • Billet

  • Foil

Characteristics

​​

  • Palladium enhanced version of Grade 9 Alloy

  • Maintains equivalent mechanical properties and fabricability of Grade 9 Alloy

  • Elevated resistance to neat reducing acids and crevice corrosion in hot brine media

Uses

​

  • Machinery used in Chemical processing

  • Equipment for geothermal brine energy extraction

  • Products used for hydromatallurgical extraction

  • Offshore hydrocarbon production

  • Hydrocarbon production

Weldability

​

Grade 18 Titanium has very good welding characteristics

UNS Number

​

R56322

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.03, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.25, Aluminium: 2.50-3.50, Vanadium: 2.30-3.00, Palladium: 0.04-0.08

Machinability

​

Grade 18 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.

Grade 28

Common Shapes

​

Grade 28 Titanium is commonly available in:

​

  • Plate

  • Welded Tubes and Pipes 

  • Wire

  • Seamless Pipes

  • Ingot

  • Billet

Weldability

​

Grade 28 Titanium has good weldability, although special alloy-specific filler must be used.

Machinability

​

Grade 28 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.

UNS Number

​

R56323

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.15, Nitrogen: ≤0.03, Carbon: ≤0.08, Hydrogen: ≤0.015, Iron: ≤0.25, Aluminium: 2.50 - 3.50, Vanadium: 2.00-3.00, Ruthenium: 0.08-0.14

Uses

​

  • Applications exposed to seawater

  • Environments exposed to attack by high crevice corrosion temperatures

Characteristics

​​

  • Ruthenium enhanced version of Grade 9 Alloy

  • Maintains equivalent mechanical properties and fabricability of Grade 9 Alloy

  • Approved for sour service to NACE MR-01-75 standard

Grade 6

Common Shapes

​

Grade 6 Titanium is commonly available in:

​

  • Sheet

  • Billet

  • Bar

  • Ingot

Characteristics

​​

  • High strength

  • Good high temperature microstructure stability and strength, oxidation and creep resistance

  • Good fabricability

​

Uses

​

  • Cryogenic applications

  • Airframes

  • Jet engine components

  • Gas turbine components

Weldability

​

Grade 6 Titanium has excellent welding characteristics.

UNS Number

​

R54520

Composition

​

Alpha structure Titanium Alloy with alloying elements; 0xygen: ≤0.20, Nitrogen: ≤0.05, Carbon: ≤0.08, Hydrogen: ≤0.02, Iron: ≤0.50, Aluminium: 4.00-6.00, Selenium: 2.00-3.00. 

Machinability

​

Grade 6 Titanium is not best suited to machining. The best results are achieved using slow speeds, accurate cooling flow and high feed rates.

An Introduction

Alpha and Near-Alpha Titanium Alloys are the traditional high temperature alloys. They have a near-single phase structure, giving them excellent creep characteristics, whilst offering the good strength of Alpha-Beta Alloys (up to 600MPa). The predominant alloying element in Near-Alpha Alloys is Aluminium, providing excellent strength and resistance to oxidation, at high temperatures. It was during the research into Near-Alpha Alloys that the detrimental phenomenon of Ti₃Al was discovered. The way this stress corrosion occurance is avoided is to cap Aluminium content at 6% for the standard alloys, although specialist alloys can still feature up to 9%. Included Alpha phase stabilisers in Alpha and Near-Alpha Alloys are Oxygen, Nitrogen and Carbon, whilst Beta isomorpheous and eutectic elements Molybdenum, Vanadium, Iron, Nickel, Hydrogen and Silicon also feature.

 

All grades, shapes and specifications of Near-Alpha 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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