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ASTM A439 Type D-2S Cast Iron

ASTM A439 type D-2S is a type of austenitic nodular cast iron. Cited properties are appropriate for the stress relieved condition. The graph bars on the material properties cards below compare ASTM A439 type D-2S 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

160

Elastic (Young's, Tensile) Modulus

180 GPa 26 x 106 psi

Elongation at Break

11 %

Poisson's Ratio

0.3

Shear Modulus

70 GPa 10 x 106 psi

Tensile Strength: Ultimate (UTS)

430 MPa 62 x 103 psi

Tensile Strength: Yield (Proof)

240 MPa 35 x 103 psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Melting Completion (Liquidus)

1350 °C 2460 °F

Melting Onset (Solidus)

1310 °C 2390 °F

Specific Heat Capacity

490 J/kg-K 0.12 BTU/lb-°F

Thermal Expansion

13 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

19 % relative

Density

7.7 g/cm3 480 lb/ft3

Embodied Carbon

4.0 kg CO2/kg material

Embodied Energy

56 MJ/kg 24 x 103 BTU/lb

Embodied Water

100 L/kg 12 gal/lb

Common Calculations

PREN (Pitting Resistance)

2.1

Resilience: Ultimate (Unit Rupture Work)

41 MJ/m3

Resilience: Unit (Modulus of Resilience)

160 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

15 points

Strength to Weight: Bending

16 points

Thermal Shock Resistance

13 points

Alloy Composition

Iron (Fe)Fe 60.3 to 69.5
Nickel (Ni)Ni 24 to 28
Silicon (Si)Si 4.8 to 5.8
Chromium (Cr)Cr 1.8 to 2.3
Carbon (C)C 0 to 2.6
Manganese (Mn)Mn 0 to 1.0
Phosphorus (P)P 0 to 0.080

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

How are the material properties defined?How do I compare this exact variant to another material?

Similar Alloys

ASTM A439 Type D-3A (S-NiCr 30 1, F43004) Cast IronASTM A436 Type 3 (L-NiCr 30 3, F41004) Cast Iron
ASTM A439 Type D-3 (S-NiCr 30 3, F43003) Cast IronASTM A439 Type D-4 (S-NiSiCr 30 5 5, F43005) Cast Iron
ASTM A436 Type 4 (L-NiSiCr 30 5 5, F41005) Cast IronASTM A439 Type D-2C (F43002) Cast Iron

Further Reading

ASTM A439: Standard Specification for Austenitic Ductile Iron Castings

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