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2. Compound armour - Wikipedia

   en.wikipedia.org/wiki/Compound_armour

   Compound armour was made from two different types of steel; a very hard but brittle high-carbon steel front plate backed by a more elastic low-carbon wrought iron plate. . The front plate was intended to break up an incoming shell, whilst the rear plate would catch any splinters and hold the armour together if the brittle front plate shatte

3. Lukens Steel Company - Wikipedia

   en.wikipedia.org/wiki/Lukens_Steel_Company

   Lukens Steel Company, located in Coatesville, Pennsylvania, is the oldest iron mill in commission within the United States. In 1995, it was one of the three largest producers of plate steel and the largest domestic manufacturer of alloy-plate.

4. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...

5. Youngstown Sheet and Tube - Wikipedia

   en.wikipedia.org/wiki/Youngstown_Sheet_and_Tube

   Officially, the company was created on November 23, 1900, when Articles of Incorporation of the Youngstown Iron Sheet and Tube Company were filed with the Ohio Secretary of State at Columbus. In 1905 the word "Iron" was dropped from the company name to reflect the company's shift in focus from producing wrought iron products to basic steel ...

6. Steel grades - Wikipedia

   en.wikipedia.org/wiki/Steel_grades

   American steel grades : AISI/SAE steel grades standard; British Standards; International Organization for Standardization ISO/TS 4949:2016; European standards – EN 10027; Japanese steel grades : Japanese Industrial Standards (JIS) standard and NK standard; Germany steel grades : DIN standard; China steel grades : GB standard; Czech steel ...

7. History of the iron and steel industry in the United States

   en.wikipedia.org/wiki/History_of_the_iron_and...

   But US iron and steel production dropped drastically during the recession of the late 1970s and early 1980s. From a combined iron and steel production of 203 million tons in 1979, US output fell almost in half, to 107 million tons in 1982. Some steel companies declared bankruptcy, and many permanently closed steelmaking plants. By 1989, US ...