Chemical composition
Nominal: elements given only as a maximum are counted at the cap; the balance takes the remainder.
| Element | Name | Content % | |
|---|---|---|---|
| Main elements1 element | |||
| Ti | Titanium | Bal. | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual5 elements | |||
| O | Oxygen | ≤ 0.25% | |
| Fe | Iron | ≤ 0.3% | |
| 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, t ≤76 mm and section ≤64.5 cm² | ≥ 345 (50 ksi) | ≥ 275 (40 ksi) | ≥ 20 | |
| Forgings | F-2: Annealed | ≥ 345 (50 ksi) | ≥ 275 (40 ksi) | ≥ 20 | Also specified: Reduction of area Z ≥ 30 % Applies to forgings up to 1935 mm² (3 in.²) in cross section; larger sections by agreement. |
| Forgings | F-2H: Annealed (H grade, for pressure-vessel use) | ≥ 400 (58 ksi) | ≥ 275 (40 ksi) | ≥ 20 | Also specified: Reduction of area Z ≥ 30 % Applies to forgings up to 1935 mm² (3 in.²) in cross section; larger sections by agreement. H grades (e.g. F-2H) share the chemistry of the numeric grade with a higher 400 MPa tensile floor, mainly for pressure vessels. |
| Plate, sheet and strip | |||||
| Plate, sheet and strip | Annealed, t ≤25 mm | ≥ 345 (50 ksi) | 275 – 450 | ≥ 20 | |
| Tube and pipe | |||||
| Seamless pipe and tube | Annealed | ≥ 345 (50 ksi) | 275 – 450 | ≥ 20 | |
Where this grade is recommended
Matched in 34 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Nitric & oxidising media | Chemical Processing | ≤ 60 °C | 1 / 7 | 92 |
| Specialty gas lines | Semiconductor & Vac-Electronics | ≤ 120 °C | 1 / 4 | 92 |
| Fuel-cell bipolar plates | Automotive & Racing | ≤ 90 °C | 2 / 4 | 92 |
| Fuel-cell bipolar plates | Hydrogen & New Energy | ≤ 90 °C | 2 / 4 | 92 |
| Sterilisation trays | Medical Devices | In-body (37 °C) | 1 / 4 | 90 |
| Process chambers & liners | Semiconductor & Vac-Electronics | ≤ 400 °C | 1 / 4 | 90 |
| Evaporators & tube bundles | Chemical Processing | ≤ 80 °C | 2 / 8 | 90 |
| Water electrolysis | Hydrogen & New Energy | ≤ 90 °C | 2 / 5 | 90 |
| Brine evaporation (MVR) | Environmental & FGD | ≤ 100 °C | 2 / 6 | 90 |
| Seawater piping & HX | Marine & Offshore | ≤ 40 °C | 5 / 11 | 90 |
| Pure steam & sterilisation | Pharma & Fine Chemicals | 121 – 134 °C | 1 / 5 | 88 |
| Lyophilisation & cryo | Pharma & Fine Chemicals | −80 ~ 20 °C | 1 / 4 | 88 |
Top 12 by score shown; 22 more matched conditions — browse them by industry in the selector. Open the selector →
Designations & equivalents
| UNS | R50400 |
| W.Nr. (Germany) | 3.7035 |
| Trade name(s) | CP-Ti Grade 2 |
| ASTM / AISI | B265 / B338 / B348 / B381 / B861 / B862 / B863 (Grade 2) |
| AMS (SAE aerospace) | 4902 / 4941 / 4942 |
| GOST (Russia) | ≈ ВТ1-0 |
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
11 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 CP Titanium Grade 2?
CP Titanium Grade 2 — Titanium. Workhorse CP titanium — mainstay of chemical process equipment
What is the maximum service temperature of TA2?
Typically about 300 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of TA2?
The specified minimum tensile strength is 345 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 TA2?
ASTM B265, ASTM B338, ASTM B348, ASTM B381, ASTM B861, ASTM B862, ASTM B863, AMS 4902, AMS 4941, AMS 4942, ASTM B363
Where is TA2 typically used?
Nitric & oxidising media (Chemical Processing); Specialty gas lines (Semiconductor & Vac-Electronics); Fuel-cell bipolar plates (Automotive & Racing); Fuel-cell bipolar plates (Hydrogen & New Energy)
In which forms is TA2 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