Ductile Iron Castings

Grades 60-40-18, 65-45-12, 80-55-06, 100-70-03 & 120-90-02

Ductile Iron offers the castability, machinability, and corrosion resistance of gray iron while adding the high strength, ductility, and hardening ability of steel. Our ductile iron castings are well known throughout the industry for high-impact resistance and a high modulus of elasticity and strength, resulting in heavier load capacity with less deflection.

Ductile Iron
Specifying Body Spec. No. Use Grade or Class Min. Tensile PSI Min. Yield PSI % Elongation Heat Treatment Other Requirements
ASTM A395 Pressure retaining parts for use at elevated temperatures (up to 650ºF) 60-40-18 60000 40000 18 Ferritized by annealing Chemical composition is subordinate to mechanical properties.
ASTM A536 Maximum shock resistance 60-40-18 60000 40000 18 May be annealed
Most widely used grade for normal service 65-45-12 65000 45000 12
Suitable for flame and induction hardening 80-55-06 80000 55000 6
Best combination of strength, wear resistance and response to surface hardening 100-70-03 100000 70000 3 Usually normalized
Maximum strength and wear resistance 120-90-02 120000 90000 2 Usually quench and tempered
BHN of Casting
SAE J434 For automotive and allied industries D-4018 170 Max. May be annealed The Microstructure shall consist of at least 80% spheroidal graphite conforming to Types I and II and be substantially free of primary cementite.
D-4512 156-217
D-5506 187-255
D-7003 241-302 May be normalized