What is wrought iron, really?
Most people who ask for a “wrought iron gate” have never seen genuine wrought iron, and neither has almost anyone selling one — the material itself stopped being made commercially decades ago. That’s not a trade secret, and it doesn’t make the term dishonest. But it’s worth knowing what you’re actually asking for before you buy one.
Our wrought iron gates guide covers forging, cost and real projects. This page answers the question underneath it: what wrought iron actually is, why it disappeared, and what the term honestly describes now.
Almost pure iron, threaded with glass.
“Wrought” is simply the old past tense of “worked” — wrought iron means worked iron, hammered into shape while glowing hot rather than cast liquid into a mould. Genuine wrought iron is almost pure iron, under 0.05% carbon, produced by a process called puddling: heating and repeatedly hammering the metal to squeeze out impurities without ever fully melting it.
What’s left behind gives it away under a microscope — thin threads of glassy silicate slag, running through the metal in one direction like the grain in a plank of wood. That fibrous structure is the actual scientific signature of real wrought iron. Mild steel, made fully molten and rolled to size, has none of it.
The last mill closed in 1973.
For centuries, wrought iron was the only practical structural and decorative iron available — every historic gate, railing and estate fence from before the late 1800s was genuinely wrought. That changed with the Bessemer converter and, later, the open-hearth furnace: mild steel could be made faster, cheaper and in far greater quantity, and by the early twentieth century it had replaced wrought iron almost everywhere.
Puddling survived a little longer for specialist and heritage work, but the last commercial wrought iron mill in Britain — the Atlas Forge of Thomas Walmsley & Sons, in Bolton — closed in 1973. No new wrought iron has been smelted commercially in the UK since. What little genuine material exists today comes from a handful of specialists who recycle and re-forge old wrought iron — reclaimed ships’ chains, decommissioned Victorian railings — almost exclusively for listed-building heritage restoration, in very small quantities.
Nobody quoting you for a new set of driveway gates is sourcing genuine smelted wrought iron. It doesn’t exist at that scale any more. If a company implies otherwise without naming a specific reclaimed source, that claim is worth questioning — not because forged mild steel is a lesser choice, but because pretending to sell an extinct material is the actual dishonesty, not using the traditional name for the traditional style.
The skill survived. The material didn’t.
When we — or virtually any smith still working today — talk about “wrought iron gates,” we mean exactly what the phrase has meant for the last fifty years: mild steel, heated and hammered by hand into the traditional forged style, using the same drawing-wall, hammer-and-anvil process wrought iron always used. We don’t have access to a material that stopped being smelted in 1973, and no supplier building at driveway-gate scale genuinely does either.
What we do have is the forging itself — every scroll curled, every finial drawn out, every collar hand-fitted, described in full in the wrought iron gates guide. That process is what a cast or laser-cut imitation can’t reproduce, regardless of which metal either one starts from.
The question that actually matters.
Once you accept that almost nobody is selling genuine wrought iron, the useful question changes — not “is this real wrought iron?” but “was this actually forged, or just styled to look forged?” A handful of things to look for:
This is exactly what we walk through on a site visit if you bring in a quote from elsewhere — not to talk it down, but because it’s a fair question to be able to answer about your own work too.
Is "wrought iron" just a marketing term now?+
Largely, yes. Genuine wrought iron — the actual alloy, puddled and hammered rather than cast — hasn't been commercially produced in the UK since 1973. "Wrought iron gate" today almost always describes mild steel forged into the traditional style, not the historic material itself.
So am I not getting real wrought iron?+
Correct, and that's true of virtually the entire trade, not just us. Unless a supplier can show you a specific reclaimed source, "wrought iron" is describing a style of hand-forged work, not the metal in front of you.
Can I still buy genuine reclaimed wrought iron?+
A tiny specialist supply exists — companies who recycle old wrought iron (ships' chains, decommissioned Victorian ironwork) and re-forge it, mainly for listed-building heritage restoration. It's scarce, slow, and priced accordingly. We don't offer this; we forge new mild steel by hand, in the traditional style.
Does that make a hand-forged mild steel gate worse?+
No — mild steel is stronger in tension than wrought iron and forges just as well by hand. The quality difference in this trade isn't the alloy, it's whether the detail was actually forged — heated, hammered, hand-fitted — or cast and welded on as a shortcut. That's the distinction worth checking, covered below.
How do I tell if a company selling "wrought iron gates" is being honest?+
Ask directly whether it's reclaimed genuine wrought iron or forged mild steel. Almost every honest answer will be the latter — that's not a red flag by itself. The actual thing to check is whether the detail is hand-forged or cast, which is a separate question covered in the section below.