Introduction
Glenn Adamson
Pictorial Press, Superman 1978 Warner/Walter Salkind film with Christopher Reeve. Pictorial Press Ltd / Alamy.
Two issues back, we suggested that despite its flimsy physicality, paper might be the most powerful material ever devised. True, it is currently being dethroned by ghostly digital hands. Over long centuries, however, in combination with reproductive printing, paper has been the means of comprehensive cultural transformation. It’s hard to think of another material with comparable importance.
But then there’s steel: if paper has been the software of historical change, it has been the hardware. It is from steel that our machines are made, and it’s with those machines that we have made our steel weapons, transport, and architecture. Since the industrial revolution – often described as an “age of steel,” just as stages of Neolithic culture have been defined by the successive mastery of wood, bronze, and iron – the material has been identified with power itself, in whatever form power takes, from Josef Stalin (a nom de guerre adapted from the Russian word for the metal, stal) to Superman, famously a “Man of Steel.”
Steel can be defined as iron alloyed with a small amount of carbon. Like other materials we have covered in our pages, however, it is not really one substance but rather a whole family, as it often incorporates other metals, added for specific purposes. Nickel, silicon and manganese can all be mixed into the alloy to make it harder and more resistant. About 18% of chromium makes steel “stainless,” bright in appearance and impervious to corrosion. Weathering steel, often known by its brand name COR-TEN (from “corrosion resistance” and “tensile strength”) and widely used in modern sculpture, includes a high percentage of copper, which encourages the development of a protective patina.
“Steel yourself,” we say to someone when they are about to undergo an ordeal. We mean something quite specific: gather your strength, but also be ready for whatever comes. It’s a good example of material intelligence entering everyday language undetected. Steel really is strong – among metals, only tungsten, whose name is from Swedish for “heavy stone,” has a higher yield point – but its power is as much in its ductility as its durability. Stone is plenty hard, after all, but we don’t build skyscrapers out of it, because it does not flex. In the curtain walls of modernist architecture, the steel grid provides just the right combination of movement and rigidity. The glass and marble panels hung on to that framework of girders provide no more structural integrity than paintings do on an art gallery’s walls.
Photo by Random Thinking.
Long before the Bauhaus came along to pioneer this type of modernist architecture, alongside its iconic tubular steel furniture, I-beams were already one of the signature products of modern industry. Like their smaller cousins, train track rails, they seemed to be extruded from factories in an infinite, ever accelerating flow. The technical breakthrough that made this production possible was the Bessemer process, patented in 1856, in which the open crucibles traditionally used for melting and combining steel were replaced with giant converters, lined with heat-resistant material (initially of clay, and later other refractory minerals). Pig iron could be turned into steel less expensively, with higher consistency, and above all, in far greater volumes. Upton Sinclair, in The Jungle, would later describe the caldrons of a Bessemer steel mill as “big enough for all the devils of hell to brew their broth in, full of something white and blinding, bubbling and splashing, roaring as if volcanoes were blowing through it.”
These melting-pots – all those mammoth egg-shaped furnaces disgorging their contents, standing like alien landers in Sheffield and Birmingham, Cleveland and Pittsburgh – were the brainchildren of Henry Bessemer. He was one of those Industrial Revolutionaries who almost didn’t seem to care what innovations he loosed upon the world. (As he wrote in his autobiography, “it was my misfortune that inventions sprung up in my mind without being sought.”) Before getting into steel processing, Bessemer had earlier developed a bronze powder for making gold paint, and at the Great Exhibition of 1851, showed off a centrifuge for separating molasses from white sugar. By then he was patenting a new invention about once every other month. But it was only with the Crimean War that his restless ingenuity finally found a ready market. Steel from his new converters was first used to make heavy artillery, then enabled Britain to extend its imperial dominion over the succeeding decades. Investment in infrastructure, global connectivity, brutal violence: it was all done with Bessemer steel.
There is another side to story of steel, though, just as important to tell. The term craft itself is etymologically derived from the German word for “power,” and much of steel’s history has unfolded at artisanal scale. To be sure, Bessemer’s process involved deskilling: one of his stated objectives was to eliminate the dependency on the expert artisans who mixed the alloy in crucibles, a process known as “puddling,” and then ladled it out by hand. A few of these highly skilled workers remained in the new mill towns, but as one historian has written, city boosters struggled to reconcile claims of modernity with the actuality of debased labor: “while civic tour guides pointed to the puddler or the blower, the eyes of mill tourists wandered to unskilled labor gangs or the semiskilled machine-tenders who shared the work floor.”
LIFE magazine cover of a steel worker, published August 9, 1943. Photographer: Margaret Bourke-White. The LIFE Picture Collection/Shutterstock.