Cast Iron vs. Wrought Iron: Key Differences & Best Uses
Cast iron is an alloy of iron with 2–4% carbon, poured molten into molds; wrought iron is almost pure iron with slag fibers, repeatedly heated and hammered into shape.
Homeowners walk past a skillet labeled “wrought iron” and a garden gate stamped “cast iron,” shrug, and assume both are just “heavy metal.” The confusion grows because both look dark and feel cold, yet one cracks under a hammer and the other bends like stiff rope.
Key Differences
Cast iron is brittle, excels at heat retention, and is shaped in molds—think skillets and engine blocks. Wrought iron is tough, malleable, and forged by hand; it’s the stuff of ornate gates, hinges, and Colonial nails.
Which One Should You Choose?
For a pan that holds heat forever, grab cast iron. For a railing you can weld and curve into scrolls, go with wrought iron. Match the metal to the job, not the label.
Examples and Daily Life
Your Dutch oven is cast iron; the vintage Parisian balcony outside your Airbnb is wrought iron. One cooks dinner, the other keeps you from falling five floors—same element, opposite talents.
Can I weld cast iron?
Yes, but preheating and nickel rods are essential; expect cracks otherwise.
Does wrought iron rust less?
Not really—its low carbon resists deep pitting, but paint or oil still matter.
Which is heavier?
Cast iron, due to its thicker sections and higher density.