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 elements2 elements | |||
| Ti | Titanium | Bal. | |
| Pd | Palladium | 0.12 – 0.25% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual7 elements | |||
| O | Oxygen | ≤ 0.25% | |
| Fe | Iron | ≤ 0.3% | |
| C | Carbon | ≤ 0.08% | |
| N | Nitrogen | ≤ 0.03% | |
| H | Hydrogen | ≤ 0.015% | |
| 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 and forgings | |||||
| Bar and billet (≤76 mm thick, cross-section ≤64.5 cm²) | Annealed | ≥ 345 (50 ksi) | ≥ 275 (40 ksi) | ≥ 20 | |
| Forgings | F-7: 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-7H: 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 | ≥ 345 (50 ksi) | 275 – 450 | ≥ 20 | |
Grade 7 has the same strength as Grade 2 (Rm ≥ 345 MPa) — it is chosen for the crevice-corrosion resistance that palladium gives.
More detail 1
Where higher strength is needed, order Grade 7H (Rm ≥ 400 MPa).
Where this grade is recommended
Matched in 13 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Wet Cl₂, chlor-alkali | Chemical Processing | ≤ 80 °C | 3 / 11 | 94 |
| Flowlines (chlorides) | Oil & Gas | ≤ 80 °C | 1 / 9 | 92 |
| HCl & reducing acids | Chemical Processing | ≤ 60 °C | 6 / 8 | 86 |
| Nitric & oxidising media | Chemical Processing | ≤ 60 °C | 7 / 7 | 46 |
| Evaporators & tube bundles | Chemical Processing | ≤ 80 °C | 8 / 8 | 45 |
| Seawater piping & HX | Marine & Offshore | ≤ 40 °C | 11 / 11 | 45 |
| Aquaculture & harbour works | Marine & Offshore | Seawater ≤ 40 °C | 8 / 8 | 44 |
| Ballast & tank systems | Marine & Offshore | ≤ 40 °C | 10 / 10 | 44 |
| Desalination & RO | Marine & Offshore | ≤ 45 °C | 12 / 12 | 44 |
| Organic & acetic acid | Chemical Processing | 120 – 200 °C | 7 / 7 | 43 |
| Firewater & deluge | Marine & Offshore | ≤ 40 °C | 7 / 7 | 43 |
| Water & gas injection | Oil & Gas | ≤ 60 °C | 8 / 8 | 43 |
Top 12 by score shown; 1 more matched conditions — browse them by industry in the selector. Open the selector →
Designations & equivalents
| UNS | R52400 |
| W.Nr. (Germany) | 3.7235 |
| Trade name(s) | Ti-0.2Pd |
| ASTM / AISI | B265 / B338 / B348 / B381 / B861 / B862 / B863 (Grade 7) |
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
8 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 TA9 (Ti-0.2Pd / Gr.7)?
TA9 (Ti-0.2Pd / Gr.7) — Titanium. Palladium-bearing, crevice-corrosion resistant — severe chloride media
What is the maximum service temperature of TA9?
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 TA9?
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 TA9?
ASTM B265, ASTM B348, ASTM B338, ASTM B381, ASTM B861, ASTM B862, ASTM B863, ASTM B363
Where is TA9 typically used?
Wet Cl₂, chlor-alkali (Chemical Processing); Flowlines (chlorides) (Oil & Gas); HCl & reducing acids (Chemical Processing); Nitric & oxidising media (Chemical Processing)
In which forms is TA9 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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