Annealed C45 is a low carbon steel that has been heated and cooled slowly for improved ductility.
Annealed C55 is a high carbon steel that has been heated and slowly cooled to improve its toughness.
Annealed C62 is a high carbon steel that has been heated and slowly cooled to increase its ductility.
Annealed C65 C67 & C75 is a high carbon steel alloy that has been heated and slowly cooled for improved toughness.
Annealed C80 is a high carbon steel alloy that has been heat-treated to improve its strength and durability.
EN47 is a high carbon, chromium steel that has been heat-treated and slowly cooled (annealed) for improved toughness.
16MnCr5 is a low alloy steel that has been heat-treated for increased hardness and wear resistance.