text: Lukes iron—iron imported from Liège, whose Dutch name is "Luik".
  Ames iron or amys iron—another variety of iron imported to England from northern Europe. Its origin has been suggested to be Amiens, but it seems to have been imported from Flanders in the 15th century and Holland later, suggesting an origin in the Rhine valley. Its origins remain controversial.
  Botolf iron or Boutall iron—from Bytów (Polish Pomerania) or Bytom (Polish Silesia).
  Sable iron (or Old Sable)—iron bearing the mark (a sable) of the Demidov family of Russian ironmasters, one of the better brands of Russian iron.
  Quality
  Tough iron Also spelled "tuf", is not brittle and is strong enough to be used for tools.
  Blend iron Made using a mixture of different types of pig iron.
  Best iron Iron put through several stages of piling and rolling to reach the stage regarded (in the 19th century) as the best quality.
  Marked bar iron Made by members of the Marked Bar Association and marked with the maker's brand mark as a sign of its quality.
  Defects
  Wrought iron is a form of commercial iron containing less than 0.10% of carbon, less than 0.25% of impurities total of sulfur, phosphorus, silicon and manganese, and less than 2% slag by weight.