Titanium Alloy Grade 7
Grade：UNS R52400 / ASTM Grade 7
Standards：ASTM B265 / ASME SB265 (Sheet/Plate/Strip), ASTM B861 / ASME SB861 (Pipe), ASTM B338 / ASME SB338 (Tube), ASTM B348 / ASME SB348 (Bar)
Product Forms：Sheet, Plate, Strip, Seamless/Welded Pipe, Seamless/Welded Tube, Bar, Wire, Forgings
Titanium Alloy Grade 7 – Palladium-Enhanced Corrosion Resistant Material
LINHUI TITANIUM supplies industrial-grade Titanium Alloy Grade 7 (UNS R52400) conforming to ASTM B861, B338, B265, and B348 standards. Our production capabilities cover pipes (OD 3.2–432mm, WT 0.5–15mm), sheets (Thk 0.5–50mm), and bars (Φ6–200mm), all delivered in annealed condition.
With 0.12–0.25% Palladium addition, this grade solves crevice corrosion issues in reducing acids where standard titanium fails. Density reaches 4.51 g/cm³, tensile strength ≥345 MPa, and yield strength ≥275 MPa. Our controlled cold rolling maintains thickness tolerance within ±0.05mm, while 100% ultrasonic and eddy current testing ensures zero-defect delivery. Direct mill supply enables 3–7 day stock delivery and 15–25 day standard production cycles.
Key Features & Benefits
Prevalent Erosion Resistance
Palladium stabilizes the inactive oxide film in hot hydrochloric and sulfuric acids over 80°C. You get dependable execution where Review 2 titanium erodes rapidly.
Excellent Formability
Maintains the same ductility as commercially unadulterated titanium. Cold bowing and profound drawing require no pre-heating, decreasing your manufacture costs.
High Weldability
Use ERTi-7 filler metal to accomplish weld zones coordinating base metal erosion resistance. No post-weld warm treatment required for most applications.
Ti-0.15Pd Alloy Plate Chemical Composition
| Elements | Metric |
| Carbon, C | <= 0.10 % |
| Hydrogen, H | <= 0.015 % |
| Iron, Fe | <= 0.30 % |
| Nitrogen, N | <= 0.030 % |
| Other, each | <= 0.050 % |
| Other, total | <= 0.30 % |
| Oxygen, O | <= 0.25 % |
| Palladium, Pd | 0.12 – 0.25 % |
| Titanium, Ti | 99 – 99.8 % Remainder |
Physical Property
| Physical Properties | Metric |
| Density | 4.50 g/cc |
Titanium Alloy Grade 7 Plate Mechanical Properties
| Mechanical Properties | Metric |
| Hardness, Brinell | 200 |
| Hardness, Knoop | 222 |
| Hardness, Rockwell B | 75 |
| Hardness, Rockwell C | 11 |
| Hardness, Vickers | 209 |
| Tensile Strength, Ultimate | 344 MPa |
| Tensile Strength, Yield | 275 – 410 MPa |
| Elongation at Break | 20% |
| Tensile Modulus | 105 GPa |
| Compressive Modulus | 110 GPa |
| Poissons Ratio | 0.37 |
| Shear Modulus | 45.0 GPa |
Manufacturing Process
Wipe Selection
We utilize low-interstitial titanium wipe with controlled oxygen and nitrogen levels to anticipate embrittlement.
Vacuum Bend Melting
Triple VAR (Vacuum Circular segment Remelting) dispenses with high-density incorporations. Palladium is included amid the moment liquefy cycle for uniform distribution.
Hot Working
Billets are fashioned at 900–1050°C to break down the cast structure. You get fabric with fine equiaxed grains for ideal ductility.
Cold Rolling & Annealing
Sheets experience multi-pass cold rolling taken after by vacuum toughening at 650–750°C. This handle stabilizes measurements and diminishes leftover stress.
Quality Inspection
Chemical Analysis
Optical emanation spectrometry confirms Palladium substance inside 0.12–0.25% run. Each warm number gets EN 10204 3.1 certification.
Non-Destructive Testing
Ultrasonic testing per ASTM E2375 recognizes inside blemishes. Whirlpool current assessment distinguishes surface breaks down to 0.1mm depth.
Mechanical Testing
Tensile examples from each generation part experience ASTM E8 testing. Stretching values averaging 24–28% surpass least requirements.
Corrosion Testing
Sample coupons are uncovered to bubbling 10% HCl for 240 hours. Erosion rates stay underneath 0.13 mm/year, affirming Palladium effectiveness.
Applications
Chemical Processing
Reactors and warm exchangers taking care of hot weaken acids. Your gear works securely in pH 1–3 situations at 90–120°C.
Chlor-Alkali Industry
Brine radiators and evaporator tubes stand up to setting in high-chloride arrangements. Upkeep interims expand past 15 years.
Pharmaceutical Manufacturing
Fermentation vessels and refining columns meet FDA compliance. The smooth toughened surface avoids bacterial colonization.
Offshore Platforms
Seawater cooling frameworks and desalination units. Cleft erosion resistance disposes of gasket joint disappointments common with stainless steel.
Export Markets
Our Titanium Alloy Grade 7 products reach chemical plants across North America, Middle East refineries, and European pharmaceutical facilities. Established partnerships with PETRONAS and PEMEX validate our material quality.
We serve Southeast Asian desalination projects and South American mining operations. Over 60 countries trust our EN 10204 3.2 certifications and rush delivery capabilities.
Why Choose Us?
Direct Mill Pricing
Factory-direct supply eliminates distributor markups. You receive 15–20% cost savings compared to trading companies.
Fast Response
Quotations within 4 hours, drawing reviews in 24 hours. Stock orders ship in 3–7 days with full traceability documentation.
Technical Support
In-house metallurgists assist with material selection. We provide corrosion data and welding procedures specific to your application.
Flexible MOQ
Trial orders start at 100 kg. This allows you to validate material performance before committing to large-volume contracts.
Packaging & Shipping
Pipes are capped with plastic end protectors and bundled with steel strapping. Sheets receive interlayer paper to prevent surface scratches during transit.
Seaworthy wooden cases comply with ISPM 15 fumigation standards. Shipping documents include commercial invoice, packing list, and mill test certificates for customs clearance.
FAQ
Q: How does Grade 7 differ from Grade 2 titanium?
A: Grade 7 contains 0.12–0.25% Palladium, providing 10x better crevice corrosion resistance in reducing acids. Mechanical properties remain identical.
Q: Can I weld Grade 7 without special procedures?
A: Yes, standard TIG welding with ERTi-7 filler works well. Argon purging protects the weld zone; no post-weld heat treatment needed for most uses.
Q: What's the typical lead time for custom sizes?
A: Stock dimensions ship in 3–7 days. Custom orders require 25–40 days depending on quantity and dimensional complexity.
Q: Do you provide third-party inspection?
A: Absolutely. SGS, BV, TÜV, and DNV inspections are available. Arrange inspection at our mill before shipment.
Q: Is Grade 7 suitable for elevated temperature service?
A: Maximum continuous service temperature is 315°C. Above this, creep strength drops and oxidation accelerates.
Request a Quote
Need precise specifications or bulk pricing for your project with Titanium Alloy Grade 7? Contact our engineering team at linhui@lhtitanium.com with your dimensional requirements and delivery schedule.
