CGN 3501 Lab 4 (Instructions & Data Sheets)

CGN 3501 Lab 4 (Instructions & Data Sheets) - LAB...

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LAB NO. 4 METALS TESTING LAB PURPOSE: The purpose of this laboratory is to give students experience in measuring various strength parameters of different metals. MATERIALS AND LABORATORY PROCEDURES Metals to be tested The following metals are to be tested: Color Code Composition 1. A36 Hot Rolled Steel blue/black 2. 2024-T351 Aluminum red 3. Grey Cast Iron copper 4. 1018 Cold Rolled Steel large block 0.18% Carbon Tests to be performed 1. Longitudinal Round Tensile Test (ASTM E8) to be performed on: (1) A36 hot rolled steel (2) 2024-T351 aluminum (3) Grey cast iron 2. Charpy Impact Test (ASTM E23) to be performed on: (1) A36 hot rolled steel (2) 2024-T351 aluminum (3) Grey cast iron 3. Rockwell A B @ Hardness Test (ASTM E18) to be performed on: (1) A36 hot rolled steel (2) 2024-T351 aluminum (3) Grey cast iron (4) 1018 cold rolled steel (large block) 4. Rockwell A C @ Hardness Test (ASTM E18) to be performed on: (1) A36 hot rolled steel 5. Brinell Hardness Test (ASTM E-10) to be performed on: (1) 1018 cold rolled steel (large block) 4-1
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Procedures for Tension Test For each metal specimen, do the following: 1. Using a micrometer, measure and record the diameter of the test specimen at its center. 2. Mark two gage points 2 inches apart on the specimen with a special indenter. Measure the exact distance between the two gage points with a micrometer. Attach a 2-inch extensometer to the specimen at the two gage points. 3. Place the specimen in the threaded grips and load the specimen slowly to failure. Record the load and deflection for each 1000 pound load increment for steel, and 500 pound load increment for aluminum and cast iron. 4. Remove the extensometer from the specimen before fracture occurs. 5. After the specimen has been broken, push the two broken pieces together by hand, and measure the distance between the two gage points by means of a micrometer to determine the total plastic deformation. Measure also the diameter of the reduced cross-section of the fractured specimen. 6.
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This note was uploaded on 05/26/2011 for the course CGN 3501 taught by Professor Mang during the Fall '10 term at University of Florida.

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CGN 3501 Lab 4 (Instructions & Data Sheets) - LAB...

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