The Iron Dragons are the patrons of Artificers, tho no record of the race showing a particular aptitude exists. They are also believed to have created the Dwarves. Being the weapon and magic item builders during the war they were the biggest targets. Their numbers, when one counts in the half dragons, were among the highest.
Though Dwarves are not anymore likely to be an Artificer then any other race, they claim Dagda, the First Iron Dragon to be the All Father of their race. Many feel that this belief comes from the reported Iron Dragon’s love of drinking, and their reported ability to be strong of body.
While sadly there are precious few, well hidden, half Iron dragons that remain, there are many ‘touched’ out there. Those with only a tiny amount of Iron dragon blood in their veins, are no more likely to be any one likely race then another.