how to pronounce IRON?

<I thought it was just ignorance on his part that he pronounced it like "siren" but I guess it's because he learned English in Germany and of course, they teach British English in Germany. >

If he studied Standard British English (SBE), he would pronounce it as it is here:

http://dictionary.cambridge.org/define.asp?dict=CALD&key=41976&ph=on

Do you see an "r" sound in the SBE example of "iron"?

And "siren" like this:

http://dictionary.cambridge.org/define.asp?key=73933&dict=CALD

<<I thought it was just ignorance on his part that he pronounced it like "siren" but I guess it's because he learned English in Germany and of course, they teach British English in Germany.>>

No, every British English dictionary to my knowledge gives ["aI@n] as the only pronunciation of "iron", and for what it's worth, I've never heard any native English speaker - British or not - pronounce "iron" to rhyme with "siren".

It's incorrect to pronounce "iron" to rhyme with "siren". "iron" is a monosyllabic word pronounced [aIr\n].

I-ern. Two syllables. Doesn't rhyme with anything I can think of! Nor does it sound like my ion, since I'm rhotic and pronounce the R.

<<"iron" is a monosyllabic word pronounced [aIr\n].>>

In some dialects yes, but I think most people in North America and Britain would consider it to be a bisyllabic word.

For me it's /Ae.@n/ (just as those British dictionaries say but with an Australian accent), homophonous with "ion".

So when you press your clothes you really build up a charge, eh, Jim?