Gr7 （Ti-Pd）Titanium Alloy Wires
Grade: Grade7
Standard: ASTM B863
Condition: Annealed
Machining Technology: Hot Rolling or Cold Drawing
Surface Treatment: Pickled or Polished
Description
Technical Parameters
Introduction
Gr7 titanium alloy wires, also called Ti-Pd alloy, are a palladium-stabilized commercially pure titanium grade. It is based on titanium with a small addition of palladium. The corrosion resistance far exceeds regular pure titanium grades.
Grade7 (UNS R52400 / R52401, Ti‑0.15Pd) is commercially‑pure titanium alloyed with 0.12‑0.25% palladium. It has mechanical properties nearly identical to Grade2 pure titanium, while palladium addition greatly improves crevice corrosion & reducing‑acid resistance. Supplied in coil form or straight cut lengths, widely used as forming wire and GTAW welding filler wire
Chemical Composition
|
Element |
Content Range |
|
Titanium (Ti) |
Balance |
|
Palladium (Pd) |
0.12~0.25% |
|
Iron (Fe) |
≤0.20% |
|
Carbon (C) |
≤0.08% |
|
Nitrogen (N) |
≤0.03% |
|
Hydrogen (H) |
≤0.015% |
|
Oxygen (O) |
≤0.25% |
Mechanical Properties
|
Performance Index |
Value Range |
|
Tensile Strength |
≥415 MPa |
|
0.2% Offset Yield Strength |
≥275 MPa |
|
Elongation (in 50mm) |
≥20% |
|
Reduction of Area |
≥45% |
|
Hardness (HRB) |
≤90 |
|
Density |
4.51 g/cm³ |
|
Modulus of Elasticity |
110 GPa |
Main Application Field
Chemical & Petrochemical Industry
Precision components: Valve cores, nozzle wires, sensor probes, heat exchanger tube bundles
Corrosion-resistant wiring: Internal leads for chemical pumps, pipeline connecting wires, anti-corrosion grounding wires
Medical & Biomedical Industry
Implantable devices: Dental implant screws/wires, bone fixation wires, cardiovascular stent framework wires, surgical suture wires
Medical instruments: Guide wires for minimally invasive surgery, precision electrode wires, medical sensor probes
Marine & Water Treatment Industry
Seawater desalination systems: Precision filter wires, membrane module connecting wires, seawater cooling system leads
Offshore equipment: Offshore platform anti-corrosion wiring, marine sensor wires, underwater detector cables
Water treatment: Wastewater treatment electrode wires, hypochlorite disinfection equipment wires
Precision Instrument & Aerospace Industry
Precision instruments: Non-magnetic instrument leads, high-precision sensor wires, vacuum equipment internal wires
Aerospace: Auxiliary system hydraulic pipeline wires, fuel system precision wires, cryogenic equipment leads.
About Our Company
1.Certification: EN ISO 9001:2015 and EN 9100:2018 certifications,
2 Material certificates: (MTC) to verify composition, mechanical properties, and compliance with ASTM standards.
2.Customization: We are specialized in R&D, production and sales in domestic. Work with manufacturers to get the factory price and reduce production steps.
3.After-sales service: After-sales service is offered to our customers anytime.
Production Capacity for Titanium Wires
- Monthly Production Capacity: 50 metric tons
- Key Production Equipment 1 set of 250mt rolling mill
- 1 set of 40mt drawing machine
- 1 set of 20mt drawing machine
- 1 electric resistance furnace
- 1 annealing furnace
- 1 skew roll straightening machine
Everything You Need to Know
What makes Gr7 wire highly corrosion‑resistant?
The trace palladium acts as a catalyst to form a stable, dense protective oxide film on the surface.
What fabrication and welding considerations apply?
Formability,welding and machining.
How to store and handle Gr7 wire?
Store in dry, clean conditions to avoid surface contamination.
Avoid contact with heavy metals (e.g., steel, copper) to prevent galvanic corrosion.
Use clean tools for handling to maintain surface integrity.
Gr7 vs Gr12 titanium wire - how to select?
- Gr7 (Ti‑Pd): Best‑in‑class crevice‑corrosion resistance for harsh reducing‑acid / stagnant hot‑chloride conditions; higher cost due to palladium content.
- Gr12 (Ti‑0.3Mo‑0.8Ni): Cost‑effective alternative for brine / seawater service; performance good but inferior to Gr7 under strong reducing‑acid environment.
Rule of thumb: Choose Gr7 when process involves dilute hot hydrochloric acid or severe crevice‑corrosion risk; use Gr12 for most seawater / brine projects for better cost performance.
contact Us
Ruihang, as a direct manufacturer of titanium products, supply optimal quality titanium products for your precision components production.
Our professional service team stands ready to respond to your inquiries. We are committed to delivering trustworthy, high-quality, and reliable products. The complete after-sales support ensure your complete satisfaction.
Ruihang Group mainly produces titanium products with the complete industry chain,including smelting,forging, straightening,rolling,surface treating,testing process. We are a technology and innovation enterprise that integrates R&D, production and sales into one integrated system. For any purchasing needs, feel free to contact us at email.
📱 WhatsApp: +86 153 1927 6123
Place of Origin:Baoji, Shaanxi, China
Business Hours: Mon–Fri 8:30–17:30 GMT+8
Address: No.16, Industrial Avenue East, Baoji City, Shaanxi Province, CHINA
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