Description of Zirconium 705 Tube / Zirconium Alloy Pipe

Zirconium 705 tube is a high-performance zirconium–niobium alloy pipe known for its exceptional corrosion resistance, high melting point, superior mechanical strength, and excellent stability in extreme environments. As a rare metal material, Zirconium 705 is widely used in demanding industries such as aerospace, nuclear energy, chemical processing, and marine engineering.

Zirconium alloys exhibit a melting point of approximately 1800°C, compared to ~1600°C for titanium, while zirconium dioxide reaches an impressive 2700°C. These properties make Zirconium 705 tubes ideal for applications involving high temperatures, aggressive chemicals, and long-term structural reliability.

Zirconium 705 seamless pipes are commonly used in heat exchangers, condensers, pressure vessels, and nuclear fuel cladding, due to their superior resistance to corrosion, especially against strong acids and alkalis. Their excellent biocompatibility also allows their use in medical and dental applications.

Technical Specifications

1. Grades

ZR60702

ZR60705

2. Standards

ASTM B658

GB/T 26283

3. Dimensions

Outer Diameter (OD): 6.0–108 mm

Wall Thickness: 1.0–4.5 mm

Length: 2000–6000 mm

4. Straightness

≤ 3 mm per meter

Testing & Requirements

6. Flaring Test

Zr-1 zirconium tubes for heat exchangers must undergo a flaring test using a 60° tapered tool. After a 15% inner diameter expansion, the sample must show no cracking at the end.

7. Ultrasonic Testing

All tubes must be inspected by ultrasonic flaw detection. Acceptance criteria for standard U-shaped defects must comply with GB/T 12969.1.

8. Metallographic Structure

Recrystallised and annealed ZR1 tubes must have an average grain size no coarser than Grade 7, as specified in GB/T 6394-2002.

Chemical Composition (wt%)

Mechanical Properties

Applications of Zirconium 705 Tube

Zirconium 705 alloy pipes are widely used in industries requiring extreme corrosion resistance, high purity, and durability, including:

Industrial Applications

Nuclear power systems

Chemical processing plants

Heat exchangers and condensers

Pressure vessels and reactor components

Piping systems transporting highly corrosive chemicals

Salt production and seawater equipment

High-Tech Applications

Aerospace and aviation components

Marine engineering

Electronics manufacturing

Medical & Biotech

Medical implants

Dental components

Surgical equipment

Key Performance Advantages

Outstanding corrosion and erosion resistance

Non-magnetic and non-sparking

High temperature resistance

Long service life and reliability

Excellent structural stability

Baoji City Changsheng Titanium Co.,Ltd is registered in 2006. Registered capital of 10 million yuan, the legal person is Zhao Wenhua. Before 2006, the factory is formed as forged workshop, no been registered. The year of 2006 was exist as a starting for Changsheng Titanium Co. The factory is located in today’s No.26 Baotai Road Weibin District, Baoji City,Shaanxi Province. The factory is major in forging ,continuing the previous processing mode, but the scales has expanded nearly 30 times, and was on the right track. In 2008, it passed ISO 9001 certification.
In 2010, Baoji City Changtai Metals Trading Co.,Ltd was registered, with capital of one million yuan. The legal person was Zhao Wenli. It was located in today’s No.26 Baotai Road Weibin District, Baoji City,Shaanxi Province.