Knowledge
About Titanium Products
Applications: Titanium and Titanium alloys can be used in aerospace, military, medical, jewelry, telecommunications and other industries.
Kroll process
Standards for Titanium products
ASTM B-265 Titanium and titanium alloy strip, sheet and plate
ASTM B-348 Titanium and titanium bar and billet
ASTM B-337 Seamless and welded titanium and titanium alloy pipe
ASTM B-338 Seamless and welded titanium and titanium alloy tubes for condensers and heat exchangers
ASTM B-367 Titanium and titanium alloy casting
ASTM B-363 Seamless and welded unalloyed titanium fittings
ASTM B-381 Titanium and titanium alloy forgings
ASTM F-67 Unalloyed titanium for surgical implants
ASTM F-136 Titanium 6Al-4V ELI alloy for surgical implant applications
AMS & MIL Standard for aerospace and military products
Titanium materials' grades
» Titanium materials of grade 1-4 are unalloyed and considered commercially as pure or "C.P." Generally speaking the tensile and yield strength goes up with the number of these grades.
» Grade 5, also known as Ti6Al4V, Ti-6Al-4V or Ti 6-4, is the most commonly used alloy because of its special physical and chemical properties. It has a chemical composition of 6% Aluminum, 4% Vanadium, 0.25% (maximum) Iron, 0.2% (maximum) Oxygen and the rest is Titanium.
» Grade 7 contains 0.12% to 0.25% Palladium. The small amount of Palladium gives it improved crevice corrosion resistance at low temperatures and high pH.
» Grade 9 contains 3.0% Aluminum and 2.5% Vanadium. It is often used in aircraft tubing for hydraulics and in athletic equipment.
» Grade 12 contains 0.3% Molybdenum and 0.8% Nickel.
» Grade 23 contains 6% Aluminum, 4% Vanadium and 0.13% (maximum) Oxygen.
Chemical components of each grade
|
Grade |
Fe% |
C% |
N% |
H% |
O% |
Al% |
V% |
Mo% |
Ni% |
Pd% |
Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Gr1 |
0.2 |
0.08 |
0.03 |
0.015 |
0.18 |
-- |
-- |
-- |
-- |
-- |
BAL. |
|
Gr2 |
0.3 |
0.08 |
0.03 |
0.015 |
0.25 |
-- |
-- |
-- |
-- |
-- |
BAL. |
|
Gr3 |
0.3 |
0.08 |
0.05 |
0.015 |
0.35 |
-- |
-- |
-- |
-- |
-- |
BAL. |
|
Gr4 |
0.3 |
0.08 |
0.05 |
0.015 |
0.40 |
-- |
-- |
-- |
-- |
-- |
BAL |
|
Gr5 |
0.25 |
0.08 |
0.03 |
0.015 |
0.02 |
5.5 - 6.75 |
3.5 - 4.5 |
-- |
-- |
-- |
BAL |
|
Gr7 |
0.3 |
0.08 |
0.03 |
0.015 |
0.25 |
-- |
-- |
-- |
-- |
0.12 - 0.25 |
BAL. |
|
Gr9 |
0.25 |
0.08 |
0.03 |
0.015 |
0.15 |
2.5 - 3.3 |
2.0 - 3.0 |
-- |
-- |
-- |
BAL. |
|
Gr12 |
0.3 |
0.08 |
0.03 |
0.015 |
0.25 |
-- |
-- |
0.2 - 0.4 |
0.6 - 0.9 |
-- |
BAL. |
|
Gr23 |
0.3 |
0.08 |
0.03 |
0.015 |
0.13 |
5.5 - 6.75 |
-- |
-- |
-- |
-- |
BAL |
Mechanical characteristics of each grade
|
Grade |
Tensile Strength (min) |
Yield Strength 0.2% Offset |
Elongation in 2 inch or 50mm % (min) |
||
|---|---|---|---|---|---|
|
KSI |
Mpa |
KSI |
Mpa |
||
|
Gr.1 |
35 |
240 |
20 - 45 |
138 - 310 |
24 |
|
Gr.2 |
50 |
345 |
40 - 65 |
275 - 450 |
20 |
|
Gr.3 |
65 |
450 |
55 - 80 |
380 - 550 |
18 |
|
Gr.4 |
80 |
550 |
≥70 |
≥483 |
15 |
|
Gr.5 |
138 |
950 |
≥128 |
≥880 |
14 |
|
Gr.7 |
50 |
345 |
≥40 |
≥275 |
24 |
|
Gr.9 |
125 |
860 |
≥105 |
≥725 |
10 |
|
Gr.12 |
70 |
483 |
≥50 |
≥345 |
18 |
|
Gr.23 |
125 |
860 |
≥115 |
≥790 |
15 |
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