60 free Steel trivia questions with answers — technology quiz, new questions added Aug 2026.
This steel trivia quiz covers the material that built the modern world, from the chemistry to the tycoons. The easy questions are the ones any curious person can get: what steel is an alloy of, which element makes it stainless, what a blast furnace produces and which country makes most of it today. From there it digs into how steel is made and heat-treated, with austenite, martensite, quenching and tempering explained through the questions. The harder end is for engineers, history buffs and pub-quiz specialists: 4,000-year-old steel from Anatolia, wootz and Damascus blades, Alexander the Great's tribute of steel, Benjamin Huntsman's crucibles, Henry Bessemer's converter and William Kelly's rival claim, the Linz-Donawitz process, Harry Brearley's rustless cutlery, Andrew Carnegie's sale to J. P. Morgan, the first billion-dollar corporation, the first steel-framed skyscraper and why old sunken ships are prized for low-background steel. Every answer was checked against encyclopaedia entries for steel, its processes and its industry before publishing, and the supporting sentence is stored with each question. If you enjoy this one, try our chemistry, Industrial Revolution and engineering quizzes next.
30 of 60 questions with answers and explanations. Play the quiz
Q 01Roughly what is the upper limit of carbon content for plain carbon steel by weight?
2.14%
Iron-carbon alloys above about 2.1% carbon are known as cast iron.
Q 02Which element, at 11% or more, makes steel stainless?
Chromium
A hard oxide film forms on the surface and can self-heal when exposed to oxygen.
Q 03Galvanized steel is coated in a layer of which metal to resist corrosion?
Zinc
Carbon steels are galvanized by hot-dipping or electroplating.
Q 04Which country produced 54% of the world's steel in 2023?
China
American production was once centred on Pittsburgh, Bethlehem and Cleveland.
Q 05Roughly how many tons of steel are produced worldwide each year?
1,600 million
The industry accounts for around 8% of global greenhouse gas emissions.
Q 06What is the high-carbon product of smelting ore with coke or charcoal, before refining into steel?
Pig iron
Oxygen is injected into the molten iron to burn off the excess carbon as carbon dioxide.
Q 07What share of steel made in the 2020s is continuously cast rather than poured into ingots?
96%
Ingots were traditionally heated in a soaking pit and hot rolled into slabs, billets or blooms.
Q 08What is the name of the face-centred cubic form of iron that can dissolve much more carbon, forming above 910 C?
Austenite
It can hold as much as 2.1% carbon, 38 times more than ferrite.
Q 09What hard, brittle phase forms when steel is quenched too fast for carbon to migrate?
Martensite
It is a supersaturated form of carbon and iron, and expands as it forms, sometimes shattering badly quenched parts.
Q 10The layered ferrite-and-cementite structure in cooled steel is named after its resemblance to what?
Mother of pearl
It is called pearlite and forms in steels of about 0.8% carbon.
Q 11What is the heat treatment that follows quenching to reduce brittleness?
Tempering
It is really a specialised type of annealing that leaves the steel more ductile and fracture-resistant.
Q 12What is the approximate density of steel?
7.9 g/cm3
It varies slightly with alloying constituents, between about 7.75 and 8.05 g/cm3.
Q 13Which alloying element slows cementite formation to create high-speed steel?
Tungsten
It keeps carbon in the iron matrix so martensite forms even at slower quench rates.
Q 14Where were the earliest known pieces of steel, nearly 4,000 years old, excavated?
Q 21Ancestors of which East African people made carbon steel 2,000 years ago in 1,300–1,400 C furnaces?
The Haya
They lived in what is now western Tanzania.
Q 22Which inventor's 1740s crucible process created the early modern crucible steel industry?
Benjamin Huntsman
Blister steel was melted in a crucible and cast into ingots, giving a far more homogeneous product.
Q 23Iron from which country's oregrounds region was the best raw material for cementation steel from the 17th century?
Sweden
The region lies north of Stockholm and stayed the usual source into the 19th century.
Anatolia
The ironware from Kaman-Kalehoyuk dates from about 1800 BC.
Q 15What was the famous high-carbon crucible steel of ancient southern India and Sri Lanka called?
Wootz
Sri Lankan sites used wind furnaces driven by the monsoon to make it.
Q 16From which Tamil word, meaning melt or dissolve, is the name wootz derived?
Urukku
Kannada and Telugu have the similar word ukku for steel.
Q 17What did the defeated King Porus give Alexander the Great in 327 BC instead of gold or silver?
Thirty pounds of steel
The Greek alchemist Zosimos later confirmed the Indian origin of high-quality crucible steel swords.
Q 18Damascus steel blades are known for distinctive banding patterns reminiscent of what?
Flowing water
The patterns are sometimes described as ladder or rose designs.
Q 19Which nanostructures in wootz steel might explain Damascus blades' legendary qualities?
Carbon nanotubes
Any such qualities were produced by chance rather than by design given the technology of the time.
Q 20Which Chinese dynasty made steel by melting wrought iron together with cast iron by the 1st century AD?
Han
Warring States-era Chinese already had quench-hardened steel.
Q 24In which year did Henry Bessemer introduce the process that began the modern era of steelmaking?
1855
His converter blew air through molten pig iron to burn off impurities.
Q 25How does the Bessemer process purify molten pig iron?
By blowing air through it
The oxidation also raises the temperature and keeps the iron molten.
Q 26Which American inventor is said to have discovered a Bessemer-like process independently in 1851?
William Kelly
The claim remains controversial.
Q 27The Gilchrist-Thomas basic lining of the Bessemer converter removed which impurity?
Phosphorus
It was named after English discoverers Percy Gilchrist and Sidney Gilchrist Thomas.
Q 28Which English city, nicknamed Steel City, did Bessemer help establish as a major industrial centre?
Sheffield
Bessemer made at least 128 inventions in iron, steel and glass and was knighted in 1879.
Q 29For what military purpose was Bessemer originally trying to make cheaper steel?
Ordnance
His method made steel easier, quicker and cheaper and revolutionised structural engineering.
Q 30Which 19th-century process originally co-melted wrought-iron scrap with pig iron in an open hearth?
Siemens-Martin
It and the Bessemer process were rendered obsolete by basic oxygen steelmaking after 1952.