Aerospace Grade R60705 Zirconium Wire Description
What is Aerospace Grade R60705 Zirconium Wire?
Aerospace Grade R60705, commercially known as Zr705, is a zirconium-niobium alloy containing 2.0%–3.0% niobium. Fabricated to ASTM B550 and GB/T 8769 specifications, it features robust mechanical strength, superior corrosion resistance, dependable thermal stability and excellent weldability.
Widely utilized in chemical processing, nuclear power, precision machinery, medical devices and aerospace systems, R60705 is the premium choice for harsh service conditions with strong acids, strong alkalis and elevated temperatures.
Technical Specifications
1. Diameter ranges for aerospace
- Common sizes: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0mm.
2.Production processes
- Titanium bar → Heating → Reversing rough rolling→ Continuous rolling → Cooling & straightening → Surface treatment → Multi-pass drawing → Annealing → Finishing & inspection → Zirconium wire.
3. Technical advantages
- One-heat rolling on Danieli equipment guarantees precise dimension and uniform micro-structure.
- Vacuum melting ensures high purity and stable composition.
- Multi-pass cold drawing results in a clean and uniform surface.
- Surface treatment: Pickled or bright finish available.
- Precision straightening guarantees straightness of ≤ 2/1000.
- Full-process inspection ensures dimensional accuracy and surface quality.
4. Basic Product Information
|
Item |
Details |
|
Product name |
R60705 Zirconium Alloy Wire |
|
Equivalent |
Zr-2.5Nb |
|
Execution standards |
ASTM B550, ASTM B658, ASTM B523 |
|
Supply form |
Straight wire, coil wire |
|
Surface condition |
Pickled, bright |
5.Chemical Composition (Aerospace Grade)
|
Element |
Zr |
Nb |
Fe |
Cr |
Hf |
C |
N |
H |
O |
|
Content % |
Balance |
2.2-2.8 |
≤0.25 |
≤0.20 |
≤4.5 |
≤0.05 |
≤0.025 |
≤0.003 |
≤0.16 |
6. Mechanical Properties (Annealed Condition)
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness HV |
|
Annealed (M) |
≥550 |
≥380 |
≥ 16 |
180–220 |
|
Cold drawn (Y) |
600–750 |
≥ 500 |
≥ 10 |
220–260 |
7. Physical Properties for Aerospace
|
Item |
Value |
|
Density |
6.5 g/cm³ |
|
Elastic modulus |
95 GPa |
|
Melting point |
About 1855 ℃ |
|
Thermal conductivity |
17.1 W/(m·K) |
|
Thermal expansion |
About 5.9×10⁻⁶ /℃ |
|
Magnetism |
Non-magnetic |
|
Neutron absorption |
Low (suitable for nuclear applications) |
8. Aerospace Environmental Performance
|
Item |
Performance |
|
Service temperature |
From -253 ℃ to 400 ℃ |
|
Corrosion resistance |
Superior–excellent in strong acids |
|
Oxidation resistance |
Good–up to 400 ℃ in air |
|
Weldability |
Good–requires inert gas shielding |
Aerospace Product Features
- Superior corrosion resistance: Outstanding in hydrochloric, sulfuric, and nitric acids–better than titanium and nickel alloys.
- Good strength: Higher than commercially pure zirconium (R60702).
- Excellent fabricability: Can be welded and cold formed.
- Low neutron absorption: Suitable for nuclear aerospace applications.
- Non-magnetic: Safe for avionics and sensitive instruments.
- High melting point: 1855℃ for high-temperature stability.
Aerospace Applications
Application | Specific Use | Reason |
Chemical Propulsion | Feed lines, injector components, thrust chamber parts | Superior acid resistance |
Nuclear Aerospace | Control rod components, reactor core parts | Low neutron absorption |
Heat Exchangers | Tubing for corrosive fluid thermal management | Excellent corrosion resistance |
Fuel Systems | Piping for aggressive propellants (N₂O₄, HNO₃,etc.) | Resists oxidizing acids |
Spacecraft Hardware | Fasteners, brackets, structural wire in corrosive environments | High reliability |
Missile Systems | Propellant handling components | Extreme chemical resistance |
Comparison: R60705 vs Other Aerospace Alloys
Alloy | Type | Density (g/cm³) | Corrosion resistance (Acids) | Neutron absorption | Best for |
R60705 (Zr-2.5Nb) | Zirconium | 6.5 | Superior | Low | Strong acids, nuclear |
Grade 5 (Ti-6Al-4V) | Titanium | 4.51 | Good | Medium | High strength structures |
N 2200 (Ni 200) | Nickel | 8.90 | Fair | High | Electrical, caustic |
316L SS | Stainless | 7.98 | Moderate | High | General purpose |
Quality Control
- Manufactured in strict accordance with .ASTM B550 and ASTM B658 industrial and aerospace specifications.
- Every production batch is supplied with an official Material Test Report (MTR) for full material traceability.
- Our multi-level quality inspection includes chemical analysis, mechanical testing, dimensional verification and surface condition inspection.
- Custom sizes, surface finishes and tempers (M, Y) are available upon inquiry.