【Daily Topic】【HVAC Version 20160924】
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Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. Compared with austenitic stainless steels, the advantage of martensitic stainless steels is that they have ( ). A. Higher strength, hardness, and wear resistance B. Higher toughness and good corrosion resistance C. Good corrosion resistance and oxidation resistance D. Good formability and weldability Correct answer: A
D. Good formability and weldability
Compared to austenitic stainless steels, the advantage of martensitic stainless steels is that they have (A). A. Higher strength, hardness, and wear resistance B. Higher toughness and good corrosion resistance C. Good corrosion resistance and oxidation resistance D. Good formability and weldability
Choose A. Maraging stainless steel is characterized by chromium as its main alloying element; it is used in a quenched-and-tempered state, offering high strength, hardness, and wear resistance. It is typically used in mildly corrosive media such as seawater, fresh water, and water vapor, at temperatures of 580°C or less. It is commonly used as a material for manufacturing parts and tools that are subject to high stresses. Due to its poor weldability, it is generally not used for welded components.
A. Higher strength, hardness, and wear resistance