Zirconium screws and nuts

I. Product Introduction Zirconium screws and nuts are high-performance fasteners made from industrial pure zirconium (Zr702, UNS R60702) or zirconium alloy (Zr705, UNS R60705) through forging, machining, heat treatment, and precision thread cutting. They belong to the category of rare metal special fasteners.

1. Core Material Characteristics

Zr702 (Industrial Pure Zirconium): Zirconium content ≥99.2%, hafnium content approximately 0.8%, exhibiting extreme corrosion resistance. It has excellent resistance to most acids, alkalis, salts, and high-temperature, high-pressure water and seawater, with corrosion resistance approaching that of tantalum.

Zr705 (Zirconium-Niobium Alloy): Contains 2.5%~3.5% niobium, offering higher strength and better toughness. Its corrosion resistance is comparable to pure zirconium, making it suitable for more demanding mechanical and corrosive working conditions.

Basic Properties: Melting point 1852℃, strong high-temperature stability; density 6.51g/cm³, lighter than stainless steel; low neutron absorption cross section, non-magnetic, excellent biocompatibility.

2. Product Specifications and Standards
Common Types
Screws: Socket head cap screws, hex head cap screws, pan head screws, countersunk head screws, set screws, etc., sizes M1.2~M48.

Nuts: Hex nuts, thick nuts, thin nuts, flange nuts, lock nuts, etc., sizes M2~M80.

Standards:
National Standard: GB/T 8769-88
American Standard: ASTM B493, ASTM B550, ASME SB-393

3. Core Advantages
Superior Corrosion Resistance: Resistant to hydrochloric acid, sulfuric acid, nitric acid, acetic acid, seawater, and salt spray, far exceeding stainless steel and Hastelloy, second only to tantalum in most working conditions.

High-Temperature Stability: Maintains strength and dimensional stability at 300~600℃, without softening or deformation.

Safe and Stable: Non-magnetic, resistant to neutron radiation, biocompatible, and does not contaminate the medium during long-term use.

Long Lifespan, Maintenance-Free: Does not rust, corrode, or fail under extreme environments, significantly reducing operation and maintenance costs.

II. Application Scope

1. Chemical and Petrochemical Industries (Core Applications)

Corrosion-Resistant Equipment: Fastening of reactors, heat exchangers, towers, pumps, valves, and pipelines.

Strong Acid Conditions: Hydrochloric acid, sulfuric acid, nitric acid, acetic acid, phosphoric acid production, and chemical fiber, dye, and pesticide synthesis equipment.

Marine Chemical Industry: Seawater desalination, sea salt chemical industry, coastal refining equipment, resistant to seawater and salt spray corrosion.

2. Nuclear Power Industry

Nuclear Reactors: Fasteners for fuel assemblies, core structures, pressure vessels, and steam generators.

Key Advantages: Low neutron absorption cross section, does not interfere with nuclear reactions, stable under high-temperature radiation.

3. Aerospace
Engines, fuselage structures, high-temperature components, spacecraft structural parts, adaptable to high-temperature, corrosive, and lightweight requirements.

4. Marine and Shipbuilding: Ships, offshore platforms, underwater equipment, seawater systems; resistant to seawater, salt spray, and marine atmospheric corrosion.

5. Medical and Biomedical: Orthopedic implants, surgical instruments, medical equipment; biocompatible, non-magnetic, resistant to body fluid corrosion, and image-compatible.

6. Precision Electronics and Semiconductors: Precision instruments, sensors, electronic equipment, semiconductor manufacturing equipment; non-magnetic, insulating, corrosion-resistant, and thermally stable.

7. Other Specialized Fields: Environmental Protection: Desulfurization and denitrification, wastewater and waste gas treatment equipment.

Metallurgy: Hydrometallurgy, electrolytic smelting equipment.

Food and Pharmaceutical: High-cleanliness, corrosion-resistant, and non-leaching food and pharmaceutical production equipment.

Quality Control and Testing

Each product undergoes rigorous inspection before shipment:

Dimensional Inspection: Precise measurement of thickness, length, and width

Chemical Composition and Mechanical Property Analysis: Third-party testing reports

Surface Inspection: Visual and microscopic inspection for defects

Ultrasonic Testing: Detection of internal defects

Why Choose Us

Technology and Quality: Located in Baoji, China's Titanium Valley, we possess professional production technology and extensive experience in non-ferrous metal manufacturing.

Global Coverage: We provide consistently high-quality products to customers in Australia, South Korea, Germany, the USA, the UK, Malaysia, and the Middle East.

Quality Commitment: We never compromise on quality and are responsible for every product we manufacture.

Technical Support: We have professional personnel overseeing the entire process from raw materials to finished products!

Contact Us

Our team is dedicated to serving you and hopes that every product you purchase will meet your expectations!

Email: lucky@bjfreelong.com

WhatsApp: +86 13335371763

Please contact us for detailed quotations and technical specifications. We look forward to becoming your trusted high-end titanium materials partner.