ASTM B493 Zirconium and Zirconium Alloy Forgings
- Type: Forged Rings, Blocks, Flat Bars, Disc, etc
- Grade R60702/Zr702 — Unalloyed zirconium.
- Grade R60704/Zr704 — Zirconium-tin.
- Grade R60705/Zr705 — Zirconium-niobium.
Features
ASTM B493 Zirconium and Zirconium Alloy Forgings
- Grade R60702/Zr702—Unalloyed zirconium.
- Grade R60704/Zr704—Zirconium-tin.
- Grade R60705/Zr705—Zirconium-niobium.
Chemical Composition (wt.%)
| Element | Grade R60702/Zr702 | Grade R60704/ZR704 | Grade R60705/ZR705 |
| 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 |
Tensile Requirements
| Grade | Tensile Strength (min MPa [ksi]) | Yield Strength (min MPa [ksi]) | Elongation in 50 mm [2 in.] (min %) |
| R60702/Zr702 | 380 [55] | 205 [30] | 16 |
| R60704/Zr704 | 415 [60] | 240 [35] | 14 |
| R60705/Zr705 | 485 [70] | 380 [55] | 16 |
Technical Specifications
| Standard | ASTM B493/B493M Zirconium and Zirconium Alloy Forgings |
| Grade | Grade R60702/Zr702, Grade R60704/Zr704, Grade 60705/Zr705 |
| Condition & Finish | Annealed, cold worked, and stress relieved; clean, smooth surface finish |
| Type | Forged rings, Forged bars, Forged Blocks, Forged disc/disk |
| Dimension | Ring Size: OD 200- 2000mm x ID 100 -1500mm x Height: 20 – 800mm |
| Bar Size: Dia. 200 – 600mm x Length: 1000 – 6000mm | |
| Block Size: Length: 150 x 6000mm x Width: 80 – 300mm x Height: 50 – 150mm | |
| Disc Size: Dia.200-1500mm x Thickness: 50 – 150mm | |
| 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, NDE Test |
Packing
Packed in plywood boxes.
Applications
Grade R60702/Zr702 (Unalloyed Zirconium):
Chemical processing equipment: Due to its excellent corrosion resistance, it is used in reactors, heat exchangers, columns, and piping systems to handle corrosive fluids.
Nuclear applications: Its low neutron absorption makes it suitable for fuel cladding in nuclear reactors.
Medical implants: Its biocompatibility makes it suitable for applications like artificial joints and dental implants.
Grade R60704/Zr704 (Zirconium-Tin alloy):
High-pressure and high-temperature applications in the chemical processing industry.
Nuclear fuel cladding operates at higher temperatures.
Grade R60705/Zr705 (Zirconium-Niobium alloy):
Critical components in the chemical processing industry operate under extreme conditions.
Nuclear applications require superior mechanical properties and corrosion resistance at high temperatures.
Additional Applications
Aerospace industry: Zirconium is used in specific components due to its high strength-to-weight ratio and corrosion resistance.
Superconducting magnets: Certain zirconium alloys find applications in superconducting magnets due to their unique properties at extremely low temperatures.
