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Selecting metal materials — Designation

Standard NF EN 1560 (May 1989) legally specifies the designation of cast iron families:

• EN indication (for standardized grades) ;

• the letters G (cast product) and J (cast iron);

• an optional indication: a letter specifying the structure of the graphite: L (lamellar), S (spheroidal), M (malleable), V (vermicular), N (no graphite);

• an optional indication: a letter specifying the micrographic structure (A austenite, F ferrite, P perlite, etc.);

• the indication :

  • or tensile strength, in MPa, and elongation, in %,

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