Titanium is a light, strong metal with a natural resistance to marine and chlorine corrosion. It has the highest strength to weight ratio of any metal and even in its unalloyed form it is as strong as some steels but around 45% lighter.
Commercially pure (CP) titanium is a term used to describe unalloyed titanium for industrial use. Minor impurities such as carbon, iron and oxygen still exist in these materials but their levels can be controlled to produce a range of product attributes.
Titanium alloys contain additional quantities of other elements such as vanadium and aluminium to further enhance mechanical properties and corrosion resistance.
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Nearest Equivalent Specification |
Available Products |
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Ti-6Al-4V (Grade 5) »
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Ti-6Al-4V (Grade 5), classed as an alpha-beta alloy, is the most widely used of the high strength titanium alloys. The alloy combines its good mechanical strength and low density (4.42 kg/dm3) with excellent corrosion resistance in many media. |
| UNS
BS
AMS |
R56400
TA10-13 & 56
4911, 4928, 4935
4904, 4907 |
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Ti-3Al-2.5V (Grade 9) »
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An alloy of titanium with 3% aluminium and 2.5% vanadium offers 20 to 50% greater mechanical strength than the commercially pure (CP) titanium grades, but is more formable and weldable than Ti-6Al-4V (Grade 5). |
| UNS
WNr.
AMS |
R56320
3.7194, 3.7195
4943, 4944, 4989 |
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Ti-6-2-4-2 »
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A weldable, near-alpha titanium alloy offering excellent mechanical strength, stability and creep resistance to temperatures as high as 5500C. Corrosion resistance is good. Many applications in aerospace and motorsport. |
| UNS
MIL T
AMS |
R54620
9046, 9047G
4975, 4976, 4919 |
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Ti-6-2-4-6 » |
An alpha-beta titanium alloy offering higher strength than 6-2-4-2 and good retention up to 4500C . Heat treatable and deep hardenable with good corrosion resistance but limited weldability. |
| UNS
MIL T
AMS
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R56260
9047G
4981B |
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CP Grade 1 »
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Commercially Pure Grade 1 is unalloyed titanium providing optimum ductility and cold formability combined with useful mechanical strength (typical yield strength 221 MPa). |
| UNS
BS
AMS |
R50250
TA1
4940 |
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CP Grade 2 »
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Commercially Pure Grade 2 is the most frequently employed unalloyed titanium grade. It provides moderate strength (typical yield strength 352 MPa) combined with good ductility and formability and excellent weldability. |
| UNS
BS
AMS |
R50400
TA 2 to 5
4902 |
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CP Grade 3 »
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Commercially Pure Grade 3 is unalloyed titanium providing higher mechanical strength (typical yield strength 462 MPa) compared with CP Grades 1 and 2 and ASME code case allowable stresses combined with moderate ductility and excellent weldability. |
| UNS
WNr.
AMS
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R50550
3.7055
4900
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CP Grade 4 »
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Commercially Pure Grade 4 is unalloyed titanium providing reasonably high mechanical strength (typical yield strength 559 MPa) combined with good weldability. Compared with CP Grades 2 and 3 the Grade 4 possess lower toughness despite its higher strength. |
| UNS
BS
AMS
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R50700
TA 6 to 9
4901
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