what you should do is get rid of the find() for each parameter filter. keep it as a logical and then you can directly use the logical operator & to compare them. i've quickly adjusted your code to use some dummy data but you can step through it and i'd take a look at the second half of the code to see that by removing the find() you get an array of 1's where it meets your condition and 0's when it doesn't. then the last line compares each one and only reports out when all 5 have a 1 in them. (otherwise you could also sum the values in rows and find when it you equal 5;
%to make it simple example material names is the column number
properties = randi(10,20,5) %generate some dummy numbers)
%so lets say we want to find the row/material with
Modu=5;
TS=5;
YS=5;
Den=5;
HC=5;
ModMat=properties(:,1)>=Modu;
TSMat=properties(:,2)>=TS;
YSMat=properties(:,3)>=YS;
DenMat=properties(:,4)<=Den;
HCMat=properties(:,5)>=HC;
Material=find(ModMat & TSMat & YSMat & DenMat &HCMat)
