Iron and steel – part III (Crucible steel)

As explained in the previous post the carbon in blister-steel was not absorbed consistently throughout the metal and, since the amount of carbon in the metal determines how it hardens when heat-treated, this was problematic for edge tool manufacturers who needed to create tools with a consistently hard edge. During the 1740s Benjamin Huntsman invented a … Read more Iron and steel – part III (Crucible steel)

Iron and steel – part II (Blister steel)

Bar-iron  (also known as wrought iron) was the raw ingredient for creating a form of steel known commonly as blister steel, and blister steel was in turn the primary ingredient for the “crucible” steel used by Sheffield tool makers. To convert bar-iron to steel,  carbon must be added back into the metal in a controlled … Read more Iron and steel – part II (Blister steel)