A tensile test specimen of 1045 hot-rolled steel having a diameter of 0.505 in. and a gage length of 2.00 in. was tested to Stress and strain data obtained during the test are shown. Determine the yield strength (0.20% offset). ss (ksi) 180- 150 120 90- Upper scale Lower scale

A tensile test specimen of 1045 hot-rolled steel having a diameter of 0.505 in. and a gage length of 2.00 in. was tested to Stress and strain data obtained during the test are shown. Determine the yield strength (0.20% offset). ss (ksi) 180- 150 120 90- Upper scale Lower scale

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Thermal Properties of Materials

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Question

A tensile test specimen of 1045 hot-rolled steel having a diameter of 0.505 in. and a gage length of 2.00 in. was tested to fracture.
Stress and strain data obtained during the test are shown. Determine the yield strength (0.20% offset).
Stress (ksi)
180
150-
120-
90
60
30-
0
0
0
Upper scale
O 77 ksi
O 56 ksi
O 103 ksi
O 86 ksi
O 62 ksi
Lower scale.
0.025 0.050 0.075 0.100 0.125 0.150 0.175
0.00 0.004 0.006 0.008 0.010
0.014
Strain (in./in.)

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