Zirconium 32
General Characteristics of Zirconium 32
Zirconium 32 is a reactor-grade zirconium-tin alloy that offers high-heat mechanical characteristics and resists corrosion in steam and irradiated water environments. As easy to fabricate as unalloyed metal.
Chemical Composition of Zirconium 32
- Iron 0.07-0.20
- Tin 1.2-1.7
- Chromium 0.05-0.15
- Nickel 0.03-0.08
- Iron-chromium-nickel 0.18-0.38
- Zirconium balance
Heat Treatment of Zirconium 32
- Cold-worked zirconium 32: anneal at 1250° to 1350°F (677° to 732°C) for one hour
- Hot-worked zirconium 32: air anneal at 1400°F (760°C) for 20 minutes
- Heat for several hours at 900°F (482°C) to relieve forming stress
- Solution treat by soaking at 1950°F (1066°C) and water quenching; then reheat to no more than 1450-°F (788°C)
Applications of Zirconium 32
- Water reactors’ fuel sheathing and structural parts
Machinability of Zirconium 32
- Conventional methods; similar to titanium
- Slow speeds
- Heavy feeds
- Soluble lubricants
- Cemented carbide and high-speed tools
Workability of Zirconium 32
- Similar to titanium when rolling and forging
- Control temperatures and use heavy equipment
- 100° or 120° bending before spring-back on temper-rolled or planished zirconium
- 95° to 110° bending for soft-annealed zirconium
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