ASTM A439 Type D-3 (S-NiCr 30 3, F43003) Cast Iron
ASTM A439 type D-3 is a type of austenitic nodular cast iron. Cited properties are appropriate for the stress relieved condition. ASTM A439 Type D-3 is the ASTM designation for this material. F43003 is the UNS number. Additionally, the British Standard (BS) designation is S3. And the AFNOR (French) designation is FGS Ni30 Cr3.
The graph bars on the material properties cards below compare ASTM A439 type D-3 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
170
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
6.8 %
Poisson's Ratio
0.3
Shear Modulus
72 GPa 10 x 106 psi
Tensile Strength: Ultimate (UTS)
430 MPa 63 x 103 psi
Tensile Strength: Yield (Proof)
240 MPa 34 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Melting Completion (Liquidus)
1400 °C 2550 °F
Melting Onset (Solidus)
1350 °C 2470 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Expansion
13 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
23 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
4.6 kg CO2/kg material
Embodied Energy
63 MJ/kg 27 x 103 BTU/lb
Embodied Water
120 L/kg 14 gal/lb
Common Calculations
PREN (Pitting Resistance)
5.8
Resilience: Ultimate (Unit Rupture Work)
25 MJ/m3
Resilience: Unit (Modulus of Resilience)
150 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
15 points
Strength to Weight: Bending
16 points
Thermal Shock Resistance
12 points
Alloy Composition
| Fe | 57 to 67.8 | |
| Ni | 28 to 32 | |
| Cr | 2.5 to 3.5 | |
| Si | 1.0 to 2.8 | |
| C | 0 to 2.6 | |
| Mo | 0.7 to 1.0 | |
| Mn | 0 to 1.0 | |
| P | 0 to 0.080 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
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