Gray cast iron
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SL Croatia (HRN) |
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GG Germany ( DIN ) |
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EN-GJL Europe (EN) |
Grey cast iron is alloy of iron and carbon. It also contains silicon, manganese, sulphur and phosphorus. Carbon is extracted in the form of graphite lamellas.
Quality and mechanical characteristics depend on shape, arrangement and size of extracted graphite lamellas and on structure of metal basis. Tensile strenght of grey cast iron is increasing with refining of graphite lamellas. Metal basis structure of grey cast iron is pearlitic, pearlitic-ferritic or ferritic. If there is more pearlitic strucure in metal basis, tensile strenght and hardness is higher. It absorbes vibrations and can be well machined.
Structure of grey cast iron is affected by chemical composition and speed of cooling of casting. Mechanical characteristics also depend on wall thickness of casting, if the wall is thicker, the tensile strenght is relatively lower.
In RS METALI we produce grey cast iron in following quality:
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