Right, I did a little experiment. The truth is that it is of little value as I was comparing apples to oranges to pears, but some might find it interesting. I have 3 types of tent peg: the Vango ones that came with my tent, Alpkit extra long Y beams and Alpkit extra long titanium tikes. I have the Alpkit ones as most of my time is spent on very soft ground so they are to give me a bit more grip under certain conditions.
I took the pegs and washed all the dirt off 6 of each type:
Vango standard aluminium (I think) come with tent:
Alpkit titanium extra long tikes:
Alpkit extra long Y beams which are aluminium I think:
This is the 3 of them together, just to give some idea of scale and differences:
As most of the reasoning behind going to titanium is for weight reduction I then stuck 6 of each on the scales. Now the scales are just a set of baking scales and they only read to a resolution of 5g but this gives a good picture of the relative weights even if it isn't rocket science:
The Y beams:
The Vango pegs:
And the titanium tikes:
My impression with pegs (and also cooking stuff) is that titanium offers a very small or even zero weight saving over more traditional materials and a very tiny potential increase in utility at, in many cases, extreme financial cost. My personal view is that for most practical use the money would be better spend elsewhere and that the average person might get more comfort, weight saving and pleasure by spending the cash on, say, a Thermarest NeoAir which will be fundamental to their camping experience rather than on titanium pots or tent pegs.
Of course we all like shiny stuff, which is why I've got some titanium pegs and cooking pots, and also we like stuff that is nice to have so I'm not saying that titanium things don't have a place or that people shouldn't buy them, just that my personal view is that while they might be nice to have they really will not offer the average person much advantage over even the cheap pegs that come with my Vango tent. If you are on a budget then titanium stuff should be waaaayyyy down your list of stuff to get and you are missing little or nothing by not having it.