🔍 Key Concepts

• Material properties of copper vs. steel in refrigeration systems • Effects of corrosion and workability on piping choice • Compatibility of materials with common refrigerants (especially anhydrous ammonia vs others)

💭 Think About

• Which material is typically easier to cut, flare, braze, and join in tight machinery spaces, copper or steel? • In a moist, oily refrigeration environment, what happens to unprotected steel over time compared to copper? • Is anhydrous ammonia generally used with copper piping, or is it usually paired with steel piping in industrial systems?

✅ Before You Answer

• Confirm which material is more corrosion resistant in typical marine/commercial refrigeration environments • Confirm which material is generally easier to fabricate and install (bending, joining, making fittings) in small-diameter lines • Check your knowledge: is copper normally avoided or preferred with anhydrous ammonia in industrial refrigeration?