302 



The Philippine Journal of Science 



" d 







Duratio 

 ruptu 

 gectio 



Modulus of 

 elasticity. 



• oooooooooooooooo 

 -Soooooooooooooooo 

 ^.^ooou:)(>itoooo-^ooeo--«t-c-4o 



Ijer Poun 

 •m. persg 



700 1 195 



000 i 157 



140 130 



560 107 



840 97 



950 ! 84 



420 62 



870 55 



340 47 



100 : 44 



810 4(1 

 620 37 

 470 35 

 370 : 33 

 300 32 

 290 32 



~. O. -H --1 



Elonga- 

 tion in 

 100 mm. 

 testing 

 length. 



Per cent. 

 1 

 2 

 3 

 4 

 5 

 6 

 9 

 11 

 14 

 16 

 19 

 22 

 25 

 29 

 31 

 32 





aojiOOOOOOOOOOwOOOOO 



S.a>»-tooeoQOO<oo«:ocONt-tr-r-«-* 



d load. 



Kilos per: Pou 

 sg. cm. 'pers(, 



137 1 1 



220 3 



274 3 



303 1 4 



342 ' 4 



357 5 



398 i 5 



425 I 6 



467 6 



496 7 



534 7 



572 1 8 



618 8 



687 9 



713 10 



731 10 



a 



a 

 < 



lbs. 

 0.662 

 1.06 

 1.32 

 1.46 

 1.65 

 1.72 

 1.92 

 2.05 

 2.25 

 2.39 

 2.58 

 2.78 

 2.98 

 3.31 

 3.44 

 3.53 





a- 



300 



480 



600 



660 



750 



780 



870 



930 



1.020 



1.080 



1,170 



1,260 



1,350 



1.500 



1,560 



1.608 







CrosB-sectional dimensions of filament at two places one-third 

 distant from each end of the 100 mm. testing length. 



2 



< 



Sg. in. 



0. 000318 

 n. 000339 



i IS 



u 



B 

 1 



in. 



0. 015 

 0.018 



£ o <=> 



■a 



in. 



0. 027 

 0.024 



mm. 



0.688 

 0.609 



