steel JIS FCD450 Ductile Iron: A536 Grade 65-45-12 Equivalent — Nodular Cast Iron for Crankshafts & Gears
FCD450 (JIS G5502) is Japan's A536 Grade 65-45-12 equivalent ductile iron — 450 MPa tensile, 10% elongation. Full guide: GJS-450-10 equivalent, all FCD grades, austempering to ADI, and when FCD outperforms FC gray iron.