ASTM B658 Zirconium and Zirconium Alloy Pipe
- Type: Seamless and Welded Pipe
- Grade R60702—Unalloyed zirconium
- Grade R60704—Zirconium-tin alloy
- Grade R60705—Zirconium-niobium alloy
- OD: NPS 1/8”-12” WT: SCH5S, 10S, 40S, 80S
ASTM B658 Seamless and Welded Zirconium and Zirconium Alloy Pipe
Golden Sunbird Metals supplies premium ASTM B658 zirconium and zirconium alloy seamless and welded pipes engineered for exceptional corrosion resistance and outstanding performance in aggressive chemical and nuclear environments. Available in three grades—R60702 (unalloyed Zr702), R60704 (zirconium-tin Zr704), and R60705 (zirconium-niobium Zr705)—these pipes are offered in NPS 1/8″ to 12″ (10.3–323.9 mm) outside diameters, SCH5S to 80S wall thicknesses (1.24–12.7 mm), and lengths of 6–12 meters. Ideal for chemical processing piping, reactors, vessels, heat exchangers, condensers, acid-handling systems, nuclear reactor service components, desalination plants, and marine applications, our ASTM B658 pipes deliver proven mechanical strength, ductility, and long service life under extreme conditions. Supplied with EN 10204 Type 3.1 or 3.2 certification and full testing (chemical analysis, tensile, hardness, hydrostatic, pneumatic, and ultrasonic NDE), GS Alloy provides reliable, high-performance zirconium piping solutions tailored to your exact specifications. Contact us today for a competitive quote and fast global delivery.
- Grade R60702—Unalloyed zirconium.
- Grade R60704—Zirconium-tin alloy.
- Grade R60705—Zirconium-niobium alloy.
Chemical Composition (wt.%) of ASTM B658 Zirconium and Zirconium Alloy Pipe
| Element | UNS Grade R60702 | UNS Grade R60704 | UNS Grade R60705 |
| Zirconium + Hafnium (min %) | 99.2 | 97.5 | 95.5 |
| Hafnium (max %) | 4.5 | 4.5 | 4.5 |
| Iron + Chromium (max %) | 0.2 | 0.2 to 0.4 | 0.2 |
| Tin | – | 1.0 to 2.0 | – |
| Hydrogen (max %) | 0.005 | 0.005 | 0.005 |
| Nitrogen (max %) | 0.025 | 0.025 | 0.025 |
| Carbon (max %) | 0.05 | 0.05 | 0.05 |
| Niobium | – | – | 2.0 to 3.0 |
| Oxygen (max %) | 0.16 | 0.18 | 0.18 |
Permissible Variation in Check Analysis Between Different Laboratories
| Element | Permissible Variation (%) |
| Hydrogen | 0.002 |
| Nitrogen | 0.01 |
| Carbon | 0.01 |
| Hafnium | 0.1 |
| Iron + Chromium | 0.025 |
| Tin | 0.05 |
| Niobium | 0.05 |
| Oxygen | 0.02 |
Mechanical Properties of ASTM B658 Zirconium and Zirconium Alloy Pipe
| Grade | Tensile Strength
(min ksi [MPa]) |
Yield Strength
at 0.2% Offset (min ksi [MPa]) |
Elongation
in 2 in. or 50 mm (min %) |
| UNS Grade R60702 | 55 [380] | 30 [205] | 16 |
| UNS Grade R60704 | 60 [415] | 35 [240] | 14 |
| UNS Grade R60705 | 80 [550] | 55 [380] | 16 |
Features
- ASTM B658/B658M zirconium and zirconium alloy seamless and welded pipe in grades R60702, R60704, and R60705.
- R60702 is unalloyed zirconium, R60704 is zirconium-tin alloy, and R60705 is zirconium-niobium alloy.
- Available in seamless and welded forms to suit different fabrication and service needs.
- Excellent corrosion resistance in acids, alkalis, seawater, and steam-containing environments.
- Low neutron absorption makes zirconium suitable for nuclear-related service.
- Supplied in controlled OD and wall-thickness ranges for industrial piping projects.
Technical Specifications
| Specification | Value |
| Standard | ASTM B658/B658M Seamless and Welded Zirconium and Zirconium Alloy Pipe |
| Grade | Grade R60702—Unalloyed zirconium (Zr702) Grade R60704—Zirconium-tin alloy (Zr704) Grade R60705—Zirconium-niobium alloy (Zr705) |
| Seam Type | Seamless and Welded |
| Pipe Size | Outside Diameter (OD): NPS 1/8″ -12″ (10.3-323.9mm) Wall Thickness: SCH5S, 10S, 40S, 80S (1.24-12.7mm) |
| Length | 6000-12000mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical Analysis, Tensile Test, Hardness Test, Nondestructive Test (Hydrostatic/Pneumatic/Ultrasonic Test) |
Applications
- Chemical processing piping, reactors, vessels, heat exchangers, and condensers.
- Acid-handling lines, valves, pumps, and other corrosion-resistant process equipment.
- Nuclear-related piping and reactor service components where low neutron absorption is important.
- Desalination and seawater-exposed systems.
- High-reliability industrial piping where long service life and corrosion resistance are priorities.
