Which of the following boasts the highest elasticity modulus (approximately 7 × 106 kg/cm2) ?
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Answer: C. Tungsten carbide
Explanation
Tungsten carbide possesses an extremely high modulus of elasticity compared to standard metals. Its stiffness value reaches approximately seven million kilograms per square centimeter under load. This exceptional rigidity prevents unwanted elastic deflection during high-precision industrial machining operations. Modulus of elasticity measures a material resistance to being elastically deformed when stress is applied. Tungsten carbide combines metal binder phases with hard carbide ceramic particles for superior stiffness. High elastic modulus values correlate directly with strong interatomic bonding forces within the crystal lattice.
Aerospace and automotive manufacturing industries require rigid cutting tools to machine hard alloy steels. Selecting materials with high stiffness prevents chatter and improves dimensional accuracy in lathe work. Engineering designs rely on elastic modulus data to calculate structural deflection under heavy operational loads. High speed steel offers good toughness but exhibits a lower elastic modulus than tungsten carbide. Stainless steel provides excellent corrosion resistance while maintaining a standard metallic stiffness profile. Superalloys maintain high-temperature strength but fall short of the extreme stiffness offered by carbides.
- Subject
- Engineering
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- Chemical Engineering
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- Difficulty
- medium
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