Q270
Maximum percentage of carbon in ferrite is
A.
0.025%
AnswerB.
0.06%
C.
0.1%
D.
0.25%
Answer: Option A
Solution
Answer: Option A
Solution:
Below 912°C (1,674°F) iron again adopts the BCC structure characteristic of α-iron, also called ferrite.The substance assumes a paramagnetic property. Carbon dissolves poorly in α-iron: no more than 0.021% by mass at 723°C