For example limiting iron temperature gives freedom from danger (6)
I believe the answer is:
safety
'freedom from danger' is the definition.
(I've seen this before)
'for example limiting iron temperature' is the wordplay.
'for example' becomes 'say' (I've seen this before).
'limiting' means one lot of letters goes inside another.
'iron' becomes 'fe' (Fe is the chemical symbol for iron).
'temperature' becomes 't' (abbreviation).
'fe'+'t'='fet'
'say' placed around 'fet' is 'SAFETY'.
'gives' acts as a link.
(Other definitions for safety that I've seen before include "one finds in numbers" , "Sort of catch" , "Welfare" , "Security; sanctuary" , "Protection" .)