Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7) | Unrivaled Corrosion Resistance in Reducing Acid Environments
✓ Reducing Acid Dominance: Resists 20% HCl, 15% H₂SO₄, and phosphoric acid with **<0.015mm/year corrosion rate** at 80°C (176°F).
✓ Crevice Corrosion Immunity: Withstands chloride-rich brine (Cl⁻ >50,000 ppm) and marine biofouling without degradation.
✓ High-Temperature Stability: Maintains 345 MPa tensile strength at 200°C (392°F) for prolonged exposure.
✓ Seamless Fabrication: Available in welded and seamless variants with Ra ≤0.8μm internal finish for high-purity applications.
Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7)
Engineered for extreme chemical, marine, and nuclear applications, Z702 titanium alloy pipe (Grade 7) combines titanium’s lightweight strength with 0.2% palladium for superior performance in reducing acids, chlorides, and crevice corrosion. Certified to ASTM B338, ASME SB-338, and NACE MR0175, Z702 pipes offer 10x longer lifespan than 316L stainless steel in 15% HCl at 60°C (140°F) while being 40% lighter than steel, making them ideal for critical fluid transfer systems in harsh, corrosive environments.
- Diameter: 6mm–300mm
- Wall Thickness: 0.5mm–20mm
- Length: 1,000mm–12,000mm (custom-cut available)
- Surface Finish: Mill finish (Ra 3.2μm), Pickled (Ra ≤1.6μm), Polished (Ra ≤0.8μm)
- Mechanical Properties: Yield Strength ≥345 MPa | Tensile Strength ≥483 MPa | Elongation ≥20% | Hardness ≤200 HV
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM B523/B523M (Zirconium Seamless & Welded Pipe), UNS R60702, ISO 16143-2 (Nuclear Grade) |
| Chemical Composition (%) | Zr + Hf ≥99.2, Sn 1.2–1.7, Fe 0.07–0.20, Cr 0.05–0.15, Ni 0.03–0.08, C ≤0.05, H ≤0.005, N ≤0.025, O ≤0.16 |
| Tensile Strength (MPa) | ≥379 (Annealed) |
| Yield Strength (MPa) | ≥207 (Annealed) |
| Elongation (%) | ≥16 (in 50mm gauge length) |
| Hardness | Brinell (HBW): 140–180; Rockwell (HRB): 70–85 |
| Density (g/cm³) | 6.55 |
| Melting Point (°C) | ~1852 |
| Thermal Conductivity (W/m·K) | 22 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 5.8 (20–100°C) |
| Electrical Resistivity (Ω·m) | 0.40 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 99 |
| Corrosion Resistance | Exceptional resistance to high-temperature water, steam, acidic/alkaline solutions, and nuclear radiation environments. |
| Heat Treatment | Annealing: 700–800°C (vacuum or inert gas). Stress relief: 500–600°C. |
| Surface Finishes | Polished (Ra ≤0.8μm), Pickled, or As-Welded (for welded pipes). |
| Pipe Dimensions | – Outer Diameter (OD): 6mm–300mm – Wall Thickness: 0.5mm–10mm – Length: 1000mm–6000mm (customizable). |
| Key Applications | Nuclear reactor coolant pipes, chemical processing pipelines, heat exchanger tubes, and corrosion-resistant systems in aggressive media. |
Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7) Applications
| Industry | Critical Use Cases | Z702 Titanium Pipe Advantage |
|---|---|---|
| Chemical Processing | Hydrochloric acid reactor lines, pickling systems | **<0.015mm/year corrosion** in 20% HCl at 80°C (176°F). |
| Marine Engineering | Seawater desalination plants, offshore risers | Immune to crevice corrosion in 50,000 ppm Cl⁻ brine. |
| Oil & Gas | Sour gas pipelines, CO₂ injection systems | Resists H₂S >5,000 ppm and CO₂ corrosion at 120°C (248°F). |
| Nuclear | Reactor coolant channels, spent fuel handling | Withstands neutron irradiation and acidic degradation. |
Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7) Product Packaging
Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7) (Grades Ti-3Al-2.5V/CP-Ti, ASTM B861/AMS 4943 compliant) are engineered for mission-critical applications in aerospace, chemical processing, and subsea systems. Renowned for their lightweight strength, seawater corrosion resistance, and biocompatibility, these pipes are protected by aerospace-certified packaging and logistics protocols compliant with AMS 4945, ISO 9328-3, and MIL-STD-129 standards to ensure flawless dimensional accuracy and surface integrity during global transit.
PE Shrink Wrapping
Each pipe is wrapped in 200μm polyethylene film to block moisture, dust, and UV exposure.
End Caps
Plastic/rubber caps on both ends to prevent dents, debris ingress, and thread damage.
Shock-Absorbing Bundling
Steel-Strapped Wooden Pallets: Heavy-duty pallets with non-slip rubber mats (Max load: 5 tons).
Laser-etched QR codes
- PMI (Positive Material Identification) reports - Hydrostatic test certifications (per ASME B31.3)
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
Z702 Titanium Alloy Pipe (Ti-0.2Pd, Grade 7) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: How does Z702 differ from TA10 (Grade 12) titanium pipes?
A: Z702 (Grade 7) uses 0.2% palladium for superior HCl resistance, while TA10 (Grade 12) relies on Mo/Ni for broader acid compatibility in sulfuric environments.
Q2: What welding methods prevent contamination?
A: Use GTAW (TIG) with ERTi-7 filler rod under argon shielding (dew point ≤-50°C) and purge gas flow ≥25 CFH.
Q3: Are pipes certified for nuclear reactor coolant systems?
Full compliance includes:
- ASME Section III Division 1
- RCC-MRx (2015) for Gen IV reactors
- NACE MR0175/ISO 15156-3
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 1 ton MOQ.
Custom sizes/tempers: 5 tons MOQ (lead time 35 days).
Q5: How to validate material authenticity?
Scan Blockchain QR codes with TitaniumTrace™ app to access:
- XRF validation against PMI certificates
- Third-party SGS/BV inspection reports
- Blockchain-validated EN 10204 3.1/3.2 certifications
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