Tranuitiions Socicly X aval A nliitccts and Muriiir /■Jifiiiicrrs, \'o/. 20, i<ji2. 



To illustrdte paper on " Tool Steel for the U. S. Navv,' 

 by Leivis Ilohart Kenney, B. S., M. E., Member. 



I'latc / J7 



Selective Test T001.S. Tungsten Tool Steel, Class i, Schedule 3893. 



