AFP offers a wide range of styles in Cast Iron guttering systems. from Victorian, to moulded Ogee, half round, deep flow half round & plain half round (all of which are available in our online shop). No other material can quiet match the character, strength, durability of a cast iron guttering system and only cast iron guttering can preserve the intentions of the original architecture of the building.
Cast iron normally refers to grey cast iron, but also identifies a big group of ferrous alloys, which solidify with a eutectic. The colour of a cracked surface can be used to identify an alloy. White cast iron is named after its white surface when cracked due to its carbide impurities which allow cracks to pass straight through its surface. Grey cast iron is named after its grey cracked surface, which happens due to the graphite flakes that deflect a passing crack and initiate numerous fresh cracks as the material breaks up.
Cast iron tends to be very brittle & prone to crumbling, except for malleable cast irons. With its low melting point, good fluidity, cast-ability, excellent machinability, resistance to deformation, and wear resistance Cast irons have become an engineering material with a vast array of uses as it is resistant to destruction and weakening by oxidisation (rust).
Cast iron is made by re-melting pig iron, with major quantities of scrap iron and scrap steel, and taking a number of steps to remove unnecessary contaminants such as phosphorus and sulphur. Depending on the application, carbon and silicon content are reduced to the desired levels, which may be anywhere from 2 to 3.5% and 1 to 3% respectively. Other elements are then added to the melt before the final form is produced by casting.
Iron is sometimes melted in a special type of blast furnace known as a cupola, but more often melted in electric induction furnace. After melting is complete, the molten iron is poured into a holding furnace or ladle.