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Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure.
Phoenix Iron Company also produced a few 6-pounders of 3.67 in (93 mm) caliber of which seven survivors are dated 1861 and have "PATENTED DEC. 25, 1855" stamped on one trunnion. On 24 July 1861, General James Wolfe Ripley of the U.S. Army ordered 300 wrought iron rifled cannons from Phoenix Iron Works. The U.S. Ordnance Department designed a ...
One popular style is the star anchor, an anchor plate cast or wrought in the shape of a five-pointed star. Other names and styles of anchor plate include earthquake washer, triangular washer, S-iron, and T-head. [2] In the United Kingdom, pattress plate is the term for circular restraints, [3] tie bar being an alternative term for rectangular ...
Other innovations followed. Engineers at the foundry invented a power-driven rolling method to weld and forge wrought iron, a process that enabled the iron company to begin producing cannon for the United States Army. [3] In the late 20th century, the company declined along with the steel and iron industry of Pennsylvania.
There are two main types of ironwork: wrought iron and cast iron. While the use of iron dates as far back as 4000 BC, it was the Hittites who first knew how to extract it (see iron ore) and develop weapons. Use of iron was mainly utilitarian until the Middle Ages; it became widely used for decoration in the period between the 16th and 19th century.
An exit to the West Front of the U.S. Capitol building is pictured on the day it was announced U.S. President-elect Donald Trump's inauguration is being moved indoors due to dangerously cold ...
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