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       CODE: 011.361-010 Buy the DOT:Download/CD-ROM
TITLE(s): TESTER (profess. & kin.) alternate titles: physical tester; testing-machine operator
Measures tensile strength, hardness, ductility, or other physical properties of metal specimens,
using following prescribed series of operations: Determines tensile strength on tension-testing
machines. Measures dimensions of specimen with scales and micrometers and records measurements.
Screws or clamps specimen in holders on machine. Clamps extensometer onto specimen and connects wire
from extensometer to automatic stress-strain recorder. Turns handwheels or moves levers to apply
tension to specimen at specified rate. Notes reading of indicator dial on control panel of machine
or observes stress-strain curve (curve obtained by plotting applied tension against resultant
elongation) being drawn by recorder to determine yield point and tensile strength of specimen.
Removes pieces of broken specimen from machine, fits them together, and measures amount of
elongation. Makes simple calculations of values, such as unit tensile strength and percentage
elongation, using tables. Records readings and calculations on special forms. Measures hardness of
specimens [HARDNESS INSPECTOR (heat treating) 504.387-010]. Measures ductility of sheet metal
specimens in sheet metal testing machine. May test specimens for plasticity and compression. May
specialize in testing iron or steel sheets for ductility and be designated Sheet Tester (steel &
rel.).
GOE: 02.04.01 STRENGTH: L GED: R4 M4 L3 SVP: 5 DLU: 77
ONET CROSSWALK: 22599B Metallurgical Technicians
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