Titanium Grade 7 (UNS R52400, equivalent to TA9) is Grade 2 with 0.12–0.25% palladium. The palladium markedly improves resistance to reducing acids and hot chlorides, giving crevice corrosion resistance far better than Grade 2.
As a manufacturer and global exporter of special alloys since 2012, Shanghai Hangbo Alloy Group Co., Ltd. supplies Titanium Grade 7 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), forgings & rolled rings (up to 7500 kg, 3500 mm OD) — all with EN 10204 3.1 certified material test reports.
Titanium Grade 7 Chemical Composition (wt%)
| Element | Content (wt%) | Element | Content (wt%) |
|---|---|---|---|
| Ti (钛) | Balance | O (氧) | ≤ 0.25 |
| Pd (钯) | 0.12–0.25 | C (碳) | ≤ 0.08 |
| Fe (铁) | ≤ 0.30 | N (氮) | ≤ 0.03 |
Titanium Grade 7 Mechanical Properties
| Property | Value |
|---|---|
| Tensile strength (Rm) | ≥ 345 MPa |
| Yield strength (Rp0.2) | ≥ 275 MPa |
| Elongation (A) | ≥ 20 % |
| Hardness | ≤ 160 HB |
| Density | 4.51 g/cm³ |
| Melting range | 1660–1675 °C |
| Thermal conductivity | 16.0 W/m·K |
| Young's modulus | 103 GPa |
| Max service temperature | 425 °C |
Key Advantages
- Palladium alloying greatly improves reducing-acid resistance
- Far better hot-chloride crevice corrosion resistance than Grade 2
- Retains Grade 2 formability and weldability
- Suits dilute hydrochloric, sulphuric and phosphoric acid
Relevant Standards
- ASTM B348
- ASTM B265
- ASTM B338
- ASTM B381
- UNS R52400
Typical Applications
- Dilute HCl and sulphuric acid chemical plant
- High-temperature brine and seawater heat exchangers
- Hydrometallurgy and electrolytic cells
- Pulp bleaching equipment
- Critical FGD components
Why Buy from Hangbo Alloy?
- Factory-direct manufacturer — founded 2012, headquartered in Shanghai Qingpu
- Full product range — bar, plate, sheet, strip, tube, forging, welding wire, flanges and machined parts
- Certified quality — ISO 9001:2015, GB/T 19001-2016, GJB 9001C-2017, EN 10204 3.1 mill test certificates with third-party inspection (SGS / BV / TUV) available on request
- Complete mill documentation — chemical analysis, mechanical test, ultrasonic test (UT), hardness and grain-size reports with every shipment
Contact Us — Shanghai Hangbo Alloy Group Co., Ltd.
Shanghai Hangbo Alloy Group Co., Ltd.
📍 No. 388 Songhuang Road, Qingpu District, Shanghai, China
📞 Tel / WhatsApp: +86 15618279078
✉️ Email: demi@nickel-alloy.com
🕒 Available 24 hours a day, 7 days a week — enquiries answered around the clock.
Send your drawing or enquiry (grade, form, size, quantity, standard) for a same-day quotation.
Frequently asked questions
Is the extra cost of Grade 7 over Grade 2 justified?
In crevices, hot chlorides or reducing acids, Grade 7 often lasts several times longer than Grade 2, and downtime plus replacement cost far exceeds the material premium. For clean oxidising media or seawater, Grade 2 is sufficient and the palladium cost is unnecessary.
What forms and sizes are available?
We supply Titanium Grade 7 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), forgings & rolled rings (up to 7500 kg, 3500 mm OD). Custom lengths, tolerances and machining to drawing are available on request.
What is the MOQ and lead time?
MOQ is flexible — trial orders from a single piece are welcome. Stock sizes ship in 3–7 days; custom forgings and machined parts typically 15–35 days depending on quantity and process.
Can you provide third-party inspection and shipping to my port?
Yes. SGS / BV / TUV or your nominated inspector can witness all tests before shipment. Full export documentation is provided, and we ship worldwide by sea or air on FOB, CIF or DDP terms.