Most suitable material for high pressure vessel operating at 500 atm. and 500° C is__________________?
Correct answer: C. Molybdenum stainless steel
- A. Mild steel
- B. 18/8 stainless steel
- C. Molybdenum stainless steel
- D. High silicon iron (14% Si)
Explanation
Molybdenum stainless steel retains high strength and creep resistance at about 500°C while also resisting corrosion under severe pressure. Mild steel and ordinary 18/8 stainless steel are less suitable for this combination of temperature and pressure.
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