The Armstrong wrought-iron, muzzle-loading 150-pounder, carries the highest charge of powder, and is, probably, the most formidable gun of its calibre (10 1/2 inches) in the world.

This article was originally published with the title “ Conversion of Pig Iron into Steel and Malleable Iron ” in Scientific American Magazine Vol. 13 No. 17 (January 1858), p. 132 doi:10.1038 ...

A heavy 10-foot-tall black wrought-iron fence now surrounds what used to be Chicago’s most visible homeless camp. Erected in time for the Democratic National Convention, the massive barrier ...

DURING the past few months the study of the chemical changes involved in the rusting of iron has been coming to the fore. In 1888 Crum Brown pointed out that iron remained free from rust in an ...

Wrought iron consists of a variety of the versatile elements commonly used in construction in the 19th century and is known for being stronger than other metals and more resistant to fatigue.