Z702 Titanium Alloy Round Bar (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.

✓ Precision Machinability: Achieves Ra ≤1.6μm surface finish for high-tolerance turned parts.

Z702 Titanium Alloy Round Bar (Ti-0.2Pd, Grade 7)

Engineered for extreme chemical, marine, and nuclear applications, Z702 titanium alloy round bar (Grade 7) combines titanium’s lightweight strength with 0.2% palladium for superior performance in reducing acids, chlorides, and crevice corrosion. Certified to ASTM B348, ASME SB-348, and NACE MR0175, Z702 round bars 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 components in harsh, corrosive environments.

Diameter: 5mm–300mm
Length: 1,000mm–6,000mm (custom-cut available)
Surface Finish: Turned (Ra ≤1.6μm), Polished (Ra ≤0.8μm), Pickled (Ra ≤3.2μm)
Mechanical Properties: Yield Strength ≥345 MPa | Tensile Strength ≥483 MPa | Elongation ≥20% | Hardness ≤200 HV

Parameter Category	Value/Description
Material Standard	ASTM B352 (Zirconium Bar), 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	Turned & Polished, Ground (Ra ≤1.6μm), Pickled & Passivated.
Round Bar Dimensions	– Diameter: 5mm–150mm – Length: 1000mm–4000mm (customizable).
Key Applications	Nuclear reactor fuel rods, chemical processing equipment, heat exchanger tubes, and corrosion-resistant fasteners.

Z702 Titanium Alloy Round Bar (Ti-0.2Pd, Grade 7) Applications

Industry	Critical Use Cases	Z702 Titanium Round Bar Advantage
Chemical Processing	Hydrochloric acid reactor shafts, pickling tank agitators	<0.015mm/year corrosion in 20% HCl at 80°C (176°F).
Marine Engineering	Seawater desalination pump shafts, offshore risers	Immune to crevice corrosion in 50,000 ppm Cl⁻ brine.
Oil & Gas	Sour gas wellhead components, CO₂ injection systems	Resists H₂S >5,000 ppm and CO₂ corrosion at 120°C (248°F).
Nuclear	Reactor coolant system components, spent fuel handling	Withstands neutron irradiation and acidic corrosion.

Z702 Titanium Alloy Round Bar (Ti-0.2Pd, Grade 7) Product Packaging

Z702 Titanium Alloy Round Bar (Ti-0.2Pd, Grade 7) (Grades Ti-6Al-4V/CP-Ti, ASTM B348/AMS 4928 compliant) are engineered for mission-critical applications in aerospace, biomedical implants, and marine engineering. Renowned for their exceptional strength-to-weight ratio, biocompatibility, and seawater corrosion resistance, these bars undergo rigorous packaging and logistics protocols compliant with AMS 4928, ISO 5832-2, and MIL-STD-129 standards to ensure pristine surface quality and dimensional accuracy during transit.

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