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EN-GJL-300 | 5.1302 graphite classification and fracture appearance in tensile test

Numeric designation5.1302
Chemical designationEN-GJL-300
Etching3% Nital

Cast iron with lamellar graphite, pure pearlitic basic structure. The minimum tensile strength is 240-300 MPa (depending on wall thickness).

Graphite classification according to EN ISO 945-1:2019

  • Graphite form I
  • Arrangement E
  • Guide number for size range: 5

The SEM images show a force fracture by tensile testing. A transcrystalline, ductile force fracture is present. Honeycomb fracture is visible in the detailed images.