Which of the following captures the requirements for high temperature, high-stress applications?

• A. Creep-resistant alloys
• B. Low-alloy steels
• C. Carbon steels
• D. Stainless steels

Answer: (A)

Creep-resistant alloys are designed specifically to withstand high temperatures and high-stress conditions, making them ideal for applications such as power generation, aerospace, and petrochemical industries where materials are subjected to extreme environments. These alloys usually contain elements such as chromium, nickel, and molybdenum, which enhance their stability and strength at elevated temperatures.

The other options, while useful in various applications, do not possess the same level of resistance to creep deformation under high-temperature and high-stress conditions. Low-alloy steels, carbon steels, and stainless steels may be suitable for certain applications, but they lack the specialized properties that creep-resistant alloys offer, particularly over extended periods and at high temperatures where creep can lead to material failure.