Is it possible?
Id like some pegs but they are a bit pricey, however the rod is easily avalible
Other than "shiny kit syndrome" why do you want them?
There are a number of titanium alloys. Do you know that the type used in the rod that you say you can get is the same as the stuff used in the pegs you can't afford? Different alloys, big difference in properties. The different alloys will be different to work with too. The kind of rod that Farid sells (or did sell) for pin stock, bends easily. Easy to form, but I wouldn't trust it not to bend when used as a peg. The 6AL4V rod that I have seen would be pretty indestructable for tent pegs, but a nightmare to form without special tools.
Possible or not, I would say that it isn't worth the trouble. Aluminium pegs will do you just as well in 90%+ of situations and the trade off on strength to weight won't matter a jot. Titanium pegs are specialist kit, more so than most other bits of kit that might be made of titanium.
There is quite a difference between good aluminium pegs and poor ones.