Calculate the increase in stress in steel segment of the compound bar if the temperature is increased by 80°F. Assume that the supports are unyielding and use the followin A (in.²) E (psi) a (/°F) 10 × 106 12.8 x 10-6 29 × 106 6.5 x 10-6 Aluminum Steel 1.5 2.0 Aluminum 10 in. Express your answer in psi and use two decimal places. Steel 15 in.

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Types and properties of steel

Steel is an alloy of iron. It is formed by heating iron and combining carbon (0.1-1.7%) with it and minor amounts of other elements such sulfur,  chromium, manganese, nickel, etc. Thousands of steel grades have been published, registered, or regulated around the world, each with its chemical composition, and special numbering systems have been devised in various countries to classify the vast number of alloys.