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 elements6 elements | |||
| Ti | Titanium | Bal. | |
| Al | Aluminium | 5.5 – 7% | |
| Mo | Molybdenum | 2 – 3% | |
| Cr | Chromium | 0.8 – 2.3% | |
| Fe | Iron | 0.2 – 0.7% | |
| Si | Silicon | 0.15 – 0.4% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual6 elements | |||
| C | Carbon | ≤ 0.08% | |
| H | Hydrogen | ≤ 0.015% | |
| N | Nitrogen | ≤ 0.05% | |
| O | Oxygen | ≤ 0.18% | |
| Other | Other elements, each | ≤ 0.1% | |
| Other | Other elements, total | ≤ 0.4% | |
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 | Annealed (M) / hot-worked (R) / cold-worked (Y), dia. or section 7–100 mm | ≥ 980 | ≥ 840 | ≥ 10 | Also specified: Reduction of area Z ≥ 25 % Tested in the conventional annealed condition unless isothermal annealing is ordered. Properties are measured on heat-treated test blanks. |
Stress-rupture requirement
| Heat treatment | Conventionally annealed bar |
| Test temperature | 400 °C |
| Test stress | 685 MPa |
| Minimum life | ≥ 50 h |
The same row also requires an elevated-temperature tensile strength of ≥685 MPa at 400 °C.
More detail 3
Note that the rupture stress and the elevated-temperature tensile floor are both 685 MPa — the alloy must sustain, for 50 h at 400 °C, a stress equal to its own elevated-temperature tensile minimum.
That is the most demanding requirement of its kind.
Assessed only when stated on the order.
This is a pass/fail acceptance test, not a design creep curve.
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 |
|---|---|---|---|---|
| Turbine discs & blades | Aerospace | 800 – 1100 °C | 4 / 8 | 78 |
Designations & equivalents
| Trade name(s) | Ti-6Al-2.5Mo-2Cr |
| GOST (Russia) | ≈ ВТ3-1 |
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
2 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 TC6 (Ti-6Al-2.5Mo-2Cr)?
TC6 (Ti-6Al-2.5Mo-2Cr) — Titanium. Engine structural forgings
What is the maximum service temperature of TC6?
Typically about 450 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of TC6?
The specified minimum tensile strength is 980 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 TC6?
GB/T 2965, GB/T 3620.1
Where is TC6 typically used?
Turbine discs & blades (Aerospace)
In which forms is TC6 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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