General Studies · Heat Treatment and Tempering
For tempering cutting tools like shear blades and milling cutters subjected to heavy loads and wear, which oxide color-temperature pair offers the best balance of hardness and toughness?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Golden yellow – 240°C✓
- 2Pale blue – 280°C
- 3Dark straw – 225°C
- 4Straw colour – 230°C
Correct answer
Golden yellow – 240°C
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