6. A piece of 0.15%C steel is carburized at 925C. Calculate the time required until the...

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6. A piece of 0.15%C steel is carburized at 925C. Calculate the time required until the carbon concentration is raised to 0.5 %C at a depth of (a) 0.5 mm, (b) 1.0 mm. The surface concentration is kept at 1.0%C all the time. 6. A piece of 0.15%C steel is carburized at 925C. Calculate the time required until the carbon concentration is raised to 0.5 %C at a depth of (a) 0.5 mm, (b) 1.0 mm. The surface concentration is kept at 1.0%C all the time.