Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Chapter 2, Problem 13P

A gray cast iron part has a Brinell hardness number of HB = 200. Estimate the ultimate strength of the part in kpsi. Make a reasonable assessment of the likely grade of cast iron by comparing both hardness and strength to material options in Table A-24.

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Problems 1. A Rockwell hardness measurement is made on a ductile iron (80-55-06 as cast) and the obtained Rockwell hardness R scale is 13 HRC. Predict the tensile and yield strengths of this material. 2. A Brinell hardness measurement is made on a ductile iron (120-90-02, Oil-quenched) using a 10-mm-diameter sphere of tungsten carbide. A load of 3,000 kg produces a 3.52-mm- diameter impression in the iron surface. a. Calculate the BHN of this alloy. (The correct units for the Brinell equation are kilograms for load and millimeters for diameters.) b. Predict the tensile and yield strengths 3. Suppose that a ductile iron (100-70-03, air-quenched) has a tensile strength of 800 MPa. What diameter impression would you expect the 3,000-kg load to produce with the 10-mm- diameter ball? Search LO W SE
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Determine the indentation diameter of a mild steel material subjected to a Brinell hardness test with a test force of 8.1 kN using a hardened steel ball indentor of 10 mm. Take the Brinell Hardness Number as 926. Also, determine the surface area of indentation. (NOTE: Please Solve the problem in a paper and upload in the separate submission link provided and also fill the answers without the unit in the box below) i) Indentation Diameter (in mm) -- ii) Surface Area of Indentation (in mm?)
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