TABLE 193.— STEEL WIRE— SPECIFICATION VALUES 



215 



S. A. E. carbon steel, No. 1050 or higher number specified (see carbon steels above). 

 Steel used to be manufactured by acid open-hearth process, to be rolled, drawn, and then 

 uniformly coated with pure tin to solder readily. 



Note. — Number of 90° bends specified above to be obtained by bending sample about 4.76 mm (.1! 

 radius, alternately, in opposite directions. 



in.) 



TABLE 194.— STEEL Wl RE— EXPERIMENTAL VALUES 



Data from tests at General Electric Co. laboratories. Commercial steel music wire 

 (hardened). 



* For 4.55 mm wire drawn cold to indicated sizes. 

 H, at 850°C. 



Ultimate strength 



tension 



kg/mm 2 lb/in. 2 



262.0 

 265.5 

 386.5 

 527.0 

 49.2 



372,500 

 378,000 

 550,000 

 750,000 

 70.000 



t For 4.55 mm (.018 in.) wire annealed in 



TABLE 195.— PLOW-STEEL HOISTING ROPE (BRIGHT) 



Wire rope to be of best plow-steel grade, and to be composed of 6 strands, 19 wires to 

 the strand, with hemp center. Wires entering into construction of rope to have an elonga- 

 tion in 203.2 mm or 8 in. of about 2\ percent. 



SMITHSONIAN PHYSICAL TABLES 



