Chemical composition
Nominal: mid-range where both limits are given, the cap where only a maximum is, balance takes the remainder. Exact specified ranges below.
| Element | Name | Content % | |
|---|---|---|---|
| Main elements3 elements | |||
| Ti | Titanium | Bal. | |
| Al | Aluminium | 2.5 – 3.5% | |
| V | Vanadium | 2 – 3% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual5 elements | |||
| Fe | Iron | ≤ 0.25% | |
| O | Oxygen | ≤ 0.15% | |
| C | Carbon | ≤ 0.08% | |
| N | Nitrogen | ≤ 0.03% | |
| H | Hydrogen | ≤ 0.015% | |
Mechanical minima by form
Guaranteed values differ by form, size and delivery condition; quotations confirm the specification, form, size and condition.
| Form | Condition | Rm MPa | Rp0.2 MPa | A ≥ % | Other requirements and notes |
|---|---|---|---|---|---|
| Bar and forgings | |||||
| Bar and billet | Annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Bar and billet | Transformed beta | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 12 | |
| Forgings | F-9, standard delivery condition | ≥ 828 (120 ksi) | ≥ 759 (110 ksi) | ≥ 10 | |
| Forgings | Transformed beta | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Forgings | F-9: Annealed | ≥ 828 (120 ksi) | ≥ 759 (110 ksi) | ≥ 10 | Also specified: Reduction of area Z ≥ 25 % Applies to forgings up to 1935 mm² (3 in.²) in cross section; larger sections by agreement. |
| Forgings | F-9: Transformed-beta condition | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | Also specified: Reduction of area Z ≥ 25 % Applies to forgings up to 1935 mm² (3 in.²) in cross section; larger sections by agreement. Values for the transformed-beta condition. |
| Plate, sheet and strip | |||||
| Plate, sheet and strip | Annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Tube and pipe | |||||
| Condenser and heat-exchanger tube | Annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Condenser and heat-exchanger tube | Cold-worked and stress-relieved | ≥ 860 (125 ksi) | ≥ 725 (105 ksi) | ≥ 10 | |
| Seamless pipe and tube | Annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Seamless pipe and tube | Transformed beta | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 12 | |
| Seamless pipe and tube | Cold-worked and stress-relieved | ≥ 860 (125 ksi) | ≥ 725 (105 ksi) | ≥ 10 | |
| Welded pipe and tube | As welded or annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
| Seamless hydraulic tubing | Annealed after cold reduction | ≥ 621 (90 ksi) | ≥ 517 (75 ksi) | ≥ 15 | |
| Seamless hydraulic tubing | Cold-worked and stress-relieved | ≥ 862 (125 ksi) | ≥ 724 (105 ksi) | ≥ 8 | |
| Seamless hydraulic tubing (controlled texture) | Cold-worked and stress-relieved | ≥ 862 (125 ksi) | ≥ 724 (105 ksi) | ≥ 8 | |
| Wire and filler metals | |||||
| Wire | Annealed | ≥ 620 (90 ksi) | ≥ 483 (70 ksi) | ≥ 15 | |
Where this grade is recommended
Matched in 1 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Fuel & hydraulic lines | Aerospace | ≤ 150 °C | 1 / 4 | 93 |
Designations & equivalents
| UNS | R56320 |
| W.Nr. (Germany) | 3.7195 |
| Trade name(s) | Ti-3Al-2.5V |
| ASTM / AISI | B265 / B338 / B348 / B381 / B861 / B862 / B863 (Grade 9) |
| AMS (SAE aerospace) | 4943 / 4944 / 4945 |
Cross-references are common near-equivalents for search and shortlisting; substitution across standards requires clause-by-clause verification. All grades in one cross-reference table →
Applicable standards
10 specifications. Name the standard and its edition on the order.
Guaranteed values and required tests differ between specifications — see Mechanical minima by form for the figures per form.
Frequently asked questions
What is TA18 (Ti-3Al-2.5V)?
TA18 (Ti-3Al-2.5V) — Titanium. Excellent tube formability — hydraulic lines
What is the maximum service temperature of TA18?
Typically about 350 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of TA18?
The specified minimum tensile strength is 620 MPa for the main product form. Minima for other forms and sizes are listed under "Mechanical minima by form" on this page.
Which standards cover TA18?
ASTM B265, ASTM B338, ASTM B348/B348M, ASTM B381, ASTM B861, ASTM B862, ASTM B863, AMS4943, AMS4944, AMS4945
Where is TA18 typically used?
Fuel & hydraulic lines (Aerospace)
In which forms is TA18 available?
Tube, plate, strip, bar, forgings, wire and other forms — sizes and delivery condition confirmed per order, with EN 10204 3.1 / 3.2 certification.
Same series
Download PDF datasheet
This grade’s datasheet as an A4 PDF — for filing, printing or forwarding to colleagues.
Download PDF datasheetSupply & enquiry
Tube & pipeφ1 – 219 × 0.25 – 25 mm
Plate4.76 – 80 mm
Barφ8 – 300 mm
Wire & filler metalsφ0.01 – 8 mmFor this grade we can supply, against your service conditions:
- Tube, plate, strip, bar, forgings, wire and more — with size range and lead time
- Chemistry and mechanical test report (EN 10204 3.1 / 3.2)
- Like-for-like alternatives and selection advice
- Applicable standards and inspection scope
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