CWB WELDING INSPECTOR LEVEL 3 EXAM QUESTIONS AND VERIFIED ANSWERS| ALL MODULES COVERED| 100% CORRECT| GRADE A

CWB WELDING INSPECTOR LEVEL 3 EXAM QUESTIONS AND VERIFIED ANSWERS| ALL MODULES COVERED| 100% CORRECT| GRADE A

What is the cause for weld bead cracking in Al?
ANSWER: Hot shortness of Al
What are the properties of Al?
ANSWER: 1. Low density, 2. Corrosion resistance, 3. High
electrical resistance, 4. High thermal conductivity, 5. Good
appearance, 6. Toughness at low temps
True / False? Al is covered with a coherent oxide.
ANSWER: True
Thermal conductivity of Al is _______ times that of Steel
ANSWER: 4
Melting point of Al is about _______ of Steel
ANSWER: Half
Coefficient of thermal expansion for Al is about _______ that of
Steel 

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