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Austenitic Nodular Cast Iron (Ductile Ni-Resist)

Austenitic nodular cast iron is a cast iron. It can have the highest base cost among cast irons. In addition, it can have the highest ductility and the highest embodied energy.

The properties of austenitic nodular cast iron include twelve common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare austenitic nodular cast iron to: cast irons (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

140 to 240

Elastic (Young's, Tensile) Modulus

180 to 190 GPa 26 to 27 x 106 psi

Elongation at Break

6.8 to 34 %

Poisson's Ratio

0.29 to 0.3

Shear Modulus

70 to 72 GPa 10 x 106 psi

Tensile Strength: Ultimate (UTS)

430 to 500 MPa 62 to 73 x 103 psi

Tensile Strength: Yield (Proof)

190 to 240 MPa 28 to 35 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 to 350 J/g

Melting Completion (Liquidus)

1340 to 1400 °C 2440 to 2550 °F

Melting Onset (Solidus)

1300 to 1360 °C 2370 to 2470 °F

Specific Heat Capacity

470 to 490 J/kg-K 0.11 to 0.12 BTU/lb-°F

Thermal Expansion

13 to 14 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

16 to 25 % relative


7.7 to 8.0 g/cm3 480 to 500 lb/ft3

Embodied Carbon

3.5 to 4.9 kg CO2/kg material

Embodied Energy

48 to 68 MJ/kg 21 to 29 x 103 BTU/lb

Embodied Water

91 to 120 L/kg 11 to 15 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

24 to 140 MJ/m3

Resilience: Unit (Modulus of Resilience)

98 to 160 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 to 25 points

Strength to Weight: Axial

15 to 18 points

Strength to Weight: Bending

16 to 18 points

Thermal Shock Resistance

12 to 15 points

Followup Questions

Further Reading

ASTM A571: Standard Specification for Austenitic Ductile Iron Castings for Pressure-Containing Parts Suitable for Low-Temperature Service

ASTM A439: Standard Specification for Austenitic Ductile Iron Castings

ISO 2892: Austenitic Cast Irons - Classification

Cast Iron: Physical and Engineering Properties, Harold T. Angus, 1976

Microstructure of Steels and Cast Irons, Madeleine Durand-Charre, 2004

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008