Refractory and rare metals · Цирконий 704 / Grade R60704
Zirconium Alloy R60704 (Zr 704): Engineering Reference Guide to Properties and Applications
Engineering Parameters of Zirconium Alloy R60704
| Forms of Supplied Products | Material Marking | ASTM Standards | ASME Standards |
|---|
| Sheet, Strip, Bar, Wire, Forgings, Billets, Elbows, Flange Fittings, Seamless and Welded Pipes | Zr Grade 704, Alloy Zr704, Zirconium Zr 704, UNS R60704 | B 493, B 523, B 550, B 551, B 653, B 658, B 752 | SB 493, SB 523, SB 550, SB 551, SB 653, SB 658 |
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Normalized Chemical Composition of Zr704 Alloy (UNS R60704) in %
| C | <0,05 |
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| Cr | 0,20-0,40 |
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| N | <0,025 |
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| Sn | 1,00-2,00 |
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| Fe | 0,20-0,40 |
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| Zr | Balance |
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Mechanical Properties of Zirconium 704 Alloy under Normal Conditions
| Tensile Strength (Ultimate Tensile Strength) | Yield Strength (0.2% Offset) | Modulus of Elasticity (Young's) | Specific Heat Capacity | Thermal Conductivity | Elongation at Break (min) |
|---|
| 420 MPa | 250 MPa | 95 kN/mm² | 280 J/kg·K | 17,1 W/m·K | 14% |
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Key Physical Constants of UNS R60704 Alloy
UNS R60704 alloy has a density of 6.5 g/cm³. This material demonstrates exceptional resistance to corrosive attack in a wide range of aggressive environments, including mineral and organic acids, alkaline solutions, and saline media. Alloying with tin, chromium, and iron significantly enhances its strength characteristics compared to unalloyed zirconium, making it indispensable for manufacturing pressure equipment in the chemical, petrochemical, and nuclear industries.
Product Range of EV Group China, compliant with ASTM standards:
- B493: Specification for Zirconium and Zirconium Alloy Forgings for Critical Applications.
- B523: Standard for Seamless and Welded Zirconium and Zirconium Alloy Tubes for Condensers and Heat Exchangers.
- B550: Specification governing the production of Zirconium and Zirconium Alloy Bars and Wire.
- B551: Standard for Zirconium and Zirconium Alloy Flat Products (Plates, Sheets, Strips).
- B653: Requirements for Seamless and Welded Zirconium and Zirconium Alloy Fittings for Piping Systems.
- B658: Specification for Seamless and Welded Zirconium and Zirconium Alloy Tubes for General Industrial Applications.
- B752: Standard for Zirconium Castings for Corrosion-Resistant Applications.
