ON THE MECHANICAL PROPERTIES OF STEEL. 



211 



Exr. XLYI.— Bar of Steel from the Titanic 

 mension of bar 1-004 inch square. 

 4 feet 6 inches. Mark on bar, " A X." 



Steel Co., Worcester. Di- 

 Length between supports 



llesidts of Exp. XLVI. 



Here the weight («) at the limit of elasticity is 1460 lbs., and tlie corresponding de- 

 flection (5) is 1-899. By formula (6).— The mean value of the deflection for unitv of 



pressure and section {!){) = -00126.5. Bv formula (7).— The mean value of tlie modu- 

 lus of elasticity (E) = 31,119,000.- By formula (2).— The modulus of elasticity (E) 



corresponding to 112 lbs. pressure = 32.120.000. By formula (8).— The work of de- 

 flection (U) up to the limit of elasticity = 115-522.— ^By formula (9).— Work of deflec- 

 tion {u) for unity of section = 114000. By formula (12).— Value of C, the unit of 



working strength = 8-682 tons. 



q2 



