SAE J434 Microstructure: The graphite component of the microstructure shall consist of at least 80% spheroidal graphite conforming to types I and II (per ASTM Download SAE J434 1986 Automotive Ductile Iron Castings Nodular Iron Castings download document. SAE J 434.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for Scope—This SAE Standard covers the hardness and microstructure Table 2 The specific properties outlined in SAE J434 draft standard of January 2003. SAE J434 Grade. (Tensile Strength. MPa / ksi). Hardness. Range. (HBW). Back to the homepage. SAE J434:2017 pdf free. Download ADVERTISEMENT. Download PDF - Sae J434 1986 Automotive Ductile Iron Castings Nodular Iron Castings [14306egk1j4j]. Scope—This SAE Standard covers the hardness, chemical analysis and microstructural requirements for SAE J434—Automotive Ductile (Nodular) Iron Castings.J434 SEP2003 (R) Automotive Ductile (Nodular) Iron Castings 1. Scope This SAE standard covers the minimum mechanical properties measured on separately cast J434 JUN1986 (R) Automotive Ductile (Nodular) Iron Castings 1. Scope This SAE standard covers the minimum mechanical properties measured on separately cast