Brown—The Densities and Specific Heats of some Alloys of Tron. 
67 
of the material would be greater than that of pure iron by 0:0029 ¢.¢.; and since 
the observed difference is 0-0011 ¢.c., the difference of these two, 0:0018 c.c., shows 
that a decided contraction has taken place. 
Se 
Yonurne = e 
SPECIFIC 
Percentage of Silicon. 
Fic. 3.—Sinicon STeexs. 
> || || | | | 
Taste VI. 
CHROMIUM STEELS. 
Percentage Composition | Specific Volume 
Mark C Cr | Density Observed Calculated Difference 
993 0:90 2°00 7°7611 012885 0-13021 0:00136 
1177 I 0-483 3°25 7°76538 0:12878 0°12910 0:00032 
1177 N 1:09 9°50 7°7082 0°12982 0'13283 0:00801 
In this Table are given the results obtained from three chromium steels which 
contain from 2 to 9°5 per cent. of chromium, the difference column showing the 
amount of contraction in the specific volume in each case. 
TRANS. ROY. DUB. SOC., VOL, IX., PART VI. 
N 
