Module 6 Materials & Hardware Practice Questions - UK CAA Part-66 AME Module 6 - Materials And Hardware Exam

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When performing a Rockwell hardness test on hardened high-strength aircraft steel on the Rockwell C scale (HRC), which indenter and major load are used?

120° diamond brale cone with a 150 kg major load 1/16-inch hardened steel ball with a 100 kg major load 10 mm tungsten carbide ball with a 3000 kg major load 136° diamond pyramid with a 30 kg major load

Correct Answer:

120° diamond brale cone with a 150 kg major load

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