'Cast iron is brittle and weaker in tension than wrought iron but is quicker and easier to make. 'Castings were frequently joined together by nuts and bolts or by interlocking the parts,' adds Douglas Kent, technical and research director at the Society for the Protection of Ancient Buildings. Hand-wrought construction is simply completely different to cast-iron objects, which are made in a mould.' ![]() 'People become confused due to the many objects of a similar nature being made using either a process or a mixture of the two. It is a term that is also erroneously applied to the working of modern steel, a more refined version of wrought iron,' explains Antiques Roadshow expert Marc Allum. It was traditionally used for architectural elements, such as grates and balconies – even the Eiffel tower is made of wrought iron. 'Wrought iron is a low-carbon malleable alloy that has to be worked by hand or through mechanical processes. If you are restoring a heavy skillet or casserole, then it will almost certainly be cast iron – however, items such as furniture or architectural ironwork are harder to identify.
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