Austempered Ductile Cast Iron
Cast Iron
heat treated (HT)
Property Overview
Density7.5g/cm³
Elastic Modulus180GPa
Tensile Strength1320MPa
Yield Strength940MPa
Brinell Hardness390HB
Maximum Service TemperatureUnknown
Chemical Composition
C
3.4 to 3.8%
CR
0 to 0.1%
NI
0 to 2.0%
MO
0 to 0.3%
MN
0.3 to 0.4%
SI
2.3 to 2.7%
P
0 to 0.040%
S
0 to 0.020%
CU
0 to 0.8%
V
0 to 0.1%
AL
0 to 0.050%
AS
0 to 0.020%
MG
0 to 0.040%
SE
0 to 0.030%
SN
0 to 0.020%
FE
89.6 to 94%
Mechanical
Compressive (Crushing) Strength
1900 MPa
Elastic (Young's, Tensile) Modulus
180 GPa
Elongation at Break
4.2 %
Fracture Toughness
54 MPa-m 1/2
Poisson's Ratio
0.29
Shear Modulus
63 GPa
Shear Strength
1080 MPa
Tensile Strength: Ultimate (UTS)
1320 MPa
Tensile Strength: Yield (Proof)
940 MPa
Hardness
Brinell Hardness
390
Physical
Density
7.5 g/cm 3
Thermal
Latent Heat of Fusion
280 J/g
Melting Completion (Liquidus)
1380 °C
Melting Onset (Solidus)
1340 °C
Specific Heat Capacity
490 J/kg-K
Thermal Conductivity
42 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
39 points
Calculated
Resilience: Ultimate (Unit Rupture Work)
51 MJ/m 3
Resilience: Unit (Modulus of Resilience)
2470 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
49 points
Strength to Weight: Bending
36 points
Environmental
Base Metal Price
2.9 % relative
Embodied Carbon
1.8 kg CO 2 /kg material
Embodied Energy
25 MJ/kg
Embodied Energy
25 MJ/kg 11 x 10 3 BTU/lb
Embodied Water
48 L/kg
Embodied Water
48 L/kg 5.7 gal/lb
Registered Designations & Aliases
Austempered Ductile Cast Iron
Standards
ASTM A897 ASTM A897: Standard Specification for Austempered Ductile Iron Castings
ISO 17804 ISO 17804: Founding - Ausferritic Spheroidal Graphite Cast Irons - Classification
ISO 17804 ISO 17804: Founding - Ausferritic Spheroidal Graphite Cast Irons - Classification ASTM A897: Standard Specification for Austempered Ductile Iron Castings Cast Iron: Physical and Engineering Properties, Harold T. Angus, 1976