ON THE MECHANICAL PROPEllTIES OF STEEL. 



199 



TBANSYEESE STRAnST. 



Exp. XXXIV. — Bar of Steel from Messrs. Sanderson Brothers, Sheffield. 

 Dimension of bar 1-046 inch square. Length between supports 

 4 feet 6 inches. Mark on bar, " S 4." 



EesuJts of Exp, XXXIV. 



Here the weight {iv) at the limit of elasticity is 1060 lbs., and the cor- 

 responding deflection (3) is 1-170. 



By formula (6).— The mean value of the deflection for unity of pressure 

 and section (DJ = •0013616. 



By formula (7). — The mean value of the modulus of elasticity (E) 

 = 29,922,000. 



By formula (2). — The modulus of elasticity (E) corresponding to 112 lbs. 

 pressm-e = 29,184,000. 



By formula (8). — Work of deflection (U) up to the limit of elasticity 

 = 51^675. 



By formula (9). — Work of deflection («) for unity of section = 47^230. 



By formula (12).— Value of C, the unit of working strength = 5^572 tons. 



