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 | 5.5 – 6.75% | |
| V | Vanadium | 3.5 – 4.5% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual5 elements | |||
| Fe | Iron | ≤ 0.4% | |
| O | Oxygen | ≤ 0.2% | |
| C | Carbon | ≤ 0.08% | |
| N | Nitrogen | ≤ 0.05% | |
| 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, t ≤76 mm and section ≤64.5 cm² | ≥ 895 (130 ksi) | ≥ 828 (120 ksi) | ≥ 10 | |
| Forgings | F-5: Annealed | ≥ 895 (130 ksi) | ≥ 828 (120 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. |
| Plate, sheet and strip | |||||
| Plate, sheet and strip | Annealed, t ≤25 mm | ≥ 895 (130 ksi) | ≥ 828 (120 ksi) | ≥ 10 | |
| Tube and pipe | |||||
| Seamless pipe and tube | Annealed | ≥ 895 (130 ksi) | ≥ 828 (120 ksi) | ≥ 10 | |
| Seamless pipe and tube | Solution treated and aged, medium-strength band | ≥ 1103 (160 ksi) | ≥ 1034 (150 ksi) | ≥ 6 | |
Where this grade is recommended
Matched in 16 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Airframe & lightweight | Aerospace | ≤ 200 °C | 1 / 10 | 95 |
| Lightweight parts & springs | Automotive & Racing | ≤ 150 °C | 1 / 7 | 94 |
| Surgical instruments | Medical Devices | In-body (37 °C) | 1 / 5 | 90 |
| Brake & drivetrain | Automotive & Racing | ≤ 300 °C | 1 / 5 | 88 |
| Platform structures & clamps | Marine & Offshore | Atmospheric & splash | 2 / 7 | 88 |
| Drill string & non-mag collars | Oil & Gas | ≤ 150 °C | 3 / 6 | 88 |
| Space structures & cryo tanks | Aerospace | ≤ 300 °C | 3 / 5 | 88 |
| High-velocity seawater | Marine & Offshore | 40 – 90 °C | 4 / 9 | 88 |
| Shafts, fasteners & propulsion | Marine & Offshore | ≤ 40 °C | 4 / 7 | 87 |
| Fuel & hydraulic lines | Aerospace | ≤ 150 °C | 3 / 4 | 84 |
| Sterilisation trays | Medical Devices | In-body (37 °C) | 3 / 4 | 84 |
| Centrifuges & filtration | Pharma & Fine Chemicals | ≤ 80 °C | 5 / 5 | 82 |
Top 12 by score shown; 4 more matched conditions — browse them by industry in the selector. Open the selector →
Designations & equivalents
| UNS | R56400 |
| W.Nr. (Germany) | 3.7165 |
| Trade name(s) | Ti-6Al-4V |
| ASTM / AISI | B265 / B348 / B381 / B861 / B862 / B863 (Grade 5) |
| AMS (SAE aerospace) | 4911 / 4920 / 4928 / 4934 / 4965 / 4967 / 6931 |
| GOST (Russia) | ≈ ВТ6 |
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
13 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 TC4 (Ti-6Al-4V / Gr.5)?
TC4 (Ti-6Al-4V / Gr.5) — Titanium. The most widely used titanium alloy — general structural workhorse
What is the maximum service temperature of TC4?
Typically about 400 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of TC4?
The specified minimum tensile strength is 895 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 TC4?
ASTM B265, ASTM B348, ASTM B381, ASTM B861, ASTM B862, ASTM B863, AMS 4911, AMS 4920, AMS 4928, AMS 4934, AMS 4965, AMS 4967, AMS 6931
Where is TC4 typically used?
Airframe & lightweight (Aerospace); Lightweight parts & springs (Automotive & Racing); Surgical instruments (Medical Devices); Brake & drivetrain (Automotive & Racing)
In which forms is TC4 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
Or email us: info@kochlin.com
Further reading: Alloy 625 Grade 1 vs Grade 2: a heat-treatment condition, not a quality level