Austenitic Grey Cast Iron (Ni-Resist)
Austenitic grey cast iron is a cast iron.
The properties of austenitic grey cast iron include eight 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 grey 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
110 to 210
Elastic (Young's, Tensile) Modulus
180 GPa 26 to 27 x 106 psi
Poisson's Ratio
0.29 to 0.3
Shear Modulus
69 to 72 GPa 10 x 106 psi
Tensile Strength: Ultimate (UTS)
150 to 230 MPa 22 to 34 x 103 psi
Thermal Properties
Latent Heat of Fusion
280 to 350 J/g
Melting Completion (Liquidus)
1340 to 1400 °C 2440 to 2540 °F
Melting Onset (Solidus)
1290 to 1350 °C 2360 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
14 to 24 % relative
Density
7.7 to 8.1 g/cm3 480 to 500 lb/ft3
Embodied Carbon
3.1 to 4.7 kg CO2/kg material
Embodied Energy
43 to 65 MJ/kg 18 to 28 x 103 BTU/lb
Embodied Water
93 to 120 L/kg 11 to 15 gal/lb
Common Calculations
PREN (Pitting Resistance)
2.0 to 5.0
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 to 25 points
Strength to Weight: Axial
5.3 to 8.2 points
Strength to Weight: Bending
7.9 to 11 points
Thermal Shock Resistance
4.5 to 6.5 points
Followup Questions
Further Reading
ASTM A436: Standard Specification for Austenitic Gray Iron Castings
ISO 2892: Austenitic Cast Irons - Classification
Cast Iron: Physical and Engineering Properties, Harold T. Angus, 1976
Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015