Alloying carbon steel with 2% nickel renders it appropriate for manufacturing ___________________?
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Answer: B. Boiler plates, rivets etc.
Explanation
Low-percentage nickel alloying refines the ferrite grain structure and improves low-temperature toughness. Boiler plates and rivets require high impact resistance and ductility under fluctuating thermal stresses. Adding two percent nickel provides the necessary toughness without overly increasing material costs. Nickel dissolves entirely in the ferrite phase of steel, strengthening it without reducing ductility. Boiler components must resist brittle fracture during pressure testing and seasonal temperature drops. Low-alloy structural steels bridge the performance gap between plain carbon and high-alloy steels.
Pressure vessels and steam boilers are constructed using nickel-alloyed steels for enhanced safety. Riveted structural joints benefit from the high shear strength and toughness of this steel grade. Industrial safety codes mandate specific toughness requirements for high-pressure containment equipment. Electronic valves require specialized alloys with specific magnetic or thermal expansion properties. Turbine blades typically require complex nickel-based superalloys to withstand extreme operating temperatures. Connecting rods are usually forged from medium-carbon alloy steels containing chromium and molybdenum.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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