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Question: a specimen of steel having an initial diameter of 0503...

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A specimen of steel having an initial diameter of 0.503 in was tested in tension using a gauge length of 2 in. The following data were obtained for the elastic and plastic states: Elastic State Load Plbf Elongation in 1000 0.0004 2 000 0.0006 3 000 0.0010 4 000 0.0013 7 000 0.0023 8 400 0.0028 8 800 0.0036 9 200 0.0089Plastic State Load P lbf Area Ai in2 8 8000.1984 9 2000.1978 9 1000.1963 3 2000.1924 15 200 0.1875 17 000 0.1563 16 400 0.1307 14 8000.1077Note that there is some overlap in the data. (a) Plot the engineering or nominal stress-strain diagram using two scales for the unit strain є, one scale from zero to about 0.02 in/in and the other scale from zero to maximum strain. (b) From this diagram find the modulus of elasticity, the 0.2 percent offset yield strength, the ultimate strength, and the percent reduction in area. (c) Characterize the material as ductile or brittle. Explain your reasoning (d) Identify a material specification from Table A-20 that has a reasonable match to the data.

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