What tubing is not to be bent?

Prepare for the HVAC D-2 License Exam. Study with flashcards and multiple-choice questions. Each question comes with hints and explanations. Get ready for your HVAC certification!

Multiple Choice

What tubing is not to be bent?

Explanation:
The main idea is that ductility determines whether a tube can be bent without damage. Soft copper is annealed and easily formed into curves, which is why it’s used where bends are needed. Hard drawn copper, however, is stiff and work-hardened, so bending it creates internal stress that can crack or crack leaks. To route hard drawn copper, you use fittings like elbows instead of bending. That’s why the tube that should not be bent is hard drawn copper tubing.

The main idea is that ductility determines whether a tube can be bent without damage. Soft copper is annealed and easily formed into curves, which is why it’s used where bends are needed. Hard drawn copper, however, is stiff and work-hardened, so bending it creates internal stress that can crack or crack leaks. To route hard drawn copper, you use fittings like elbows instead of bending. That’s why the tube that should not be bent is hard drawn copper tubing.

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