@retromania - Glad to hear it.
You can find plenty of tables online to convert AWG to mm2 measurement for European cables. Just google convert AWG to Metric.
European cords (flexes) are gauged by measuring the cross section of the conductors in square millimeters.
Typical iron flexes would be:
1.0mm2 for lower powered irons.
1.5mm2 for higher powered irons (2.5kW and above).
The main thing you need to look at is the amperage rather than the wattage when it comes to things like plugs, socket outlets, flexes/cords etc.
A US Iron will pull up to 15amps (maximum for a socket outlet there) which corresponds to about 1800watts.
A Euro Iron will pull up to 13amps (maximum for a UK socket outlet) which corresponds to roughly 3000watts.
2400W seems to be quite a common load in Europe which is less than 10Amps at European voltage.
The majority of modern Continental European outlets can comfortably deliver up to 16amps , but in general plug-in appliances are usually designed with a target of 10A to 13A max in mind to accommodate older circuits in some buildings and also to accommodate the UK and Ireland's 13A fused plugs.
UK / Ireland plugs actually contain a small cartridge fuse so, if you've a small appliance like say a DVD player it will have a 3amp fuse in the plug, some IT equipment like say your iMac might have a 10A fuse while a clothes iron or a washing machine might have a 13amp fuse in the plug itself.
Circuits in the UK are usually 32amp rings (power fed from both ends), while in Ireland they are usually 20amp radial (similar setup to the US/continental Europe). The fuse in the plug protects the appliance cord from over-loading. It's also a handy feature as it means we basically cannot overload powerstrips as the plug fuse will blow.