Alpha iron is stable ______________ °C?
Correct answer: B. Upto 910
- A. Above 1403
- B. Upto 910
- C. Above 1800
- D. Between 910 & 1403
Explanation
Alpha iron is the body-centred-cubic ferrite form of iron and remains stable from low temperature up to about 910°C, where it changes to gamma iron. Thus, the range is stated as up to 910°C.
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