EN-GJS-900-2
5.3302Ultra-high-strength ductile cast iron with minimum tensile strength 900 MPa and minimum elongation 2%. The highest strength grade in EN 1563 for conventional (non-ADI) ductile iron. Always requires heat treatment (normalizing + tempering or quenching + tempering). Very high yield strength of 600 MPa minimum. Used for the most demanding ductile iron applications: heavy-duty gears, high-performance crankshafts, and structural components replacing steel forgings.
Mechanical properties — Pro
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EN-GJS-500-7
5.3200Ferritic-pearlitic ductile cast iron with minimum tensile strength 500 MPa and minimum elongation 7%. The balanced grade offering significantly higher strength than EN-GJS-400-15 while retaining reasonable ductility. Mixed ferrite-pearlite matrix (typically 40-50% pearlite). Used for crankshafts, connecting rods, suspension components, gear housings, heavy-duty pipe fittings, and medium-stress structural castings. Equivalent to DIN GGG50, JIS FCD500.
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