8mm Malleable chain
Iron chain size 8 is actually produced from low grades of steel or malleable malleable steel. The size 8 iron chain is actually produced from G43 grades or lower grades, which have a minimum amount of carbon in their alloy compositions, are very soft and wear under high wear stresses. The tensile strength of 8 mm iron chain is lower than 400 N/mm2 and has a surface hardness between 30 and 37 Rockwell.