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Austempered Cast Iron vs. AWS E309

Both austempered cast iron and AWS E309 are iron alloys. They have 63% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is austempered cast iron and the bottom bar is AWS E309.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 1.1 to 13
34
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 62 to 69
78
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
620

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1380
1410
Melting Onset (Solidus), °C 1340
1370
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 42
15
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.7
Embodied Energy, MJ/kg 25
52
Embodied Water, L/kg 48
180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 66
22
Strength to Weight: Bending, points 27 to 44
21
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 25 to 53
16

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0 to 0.15
Chromium (Cr), % 0 to 0.1
22 to 25
Copper (Cu), % 0 to 0.8
0 to 0.75
Iron (Fe), % 89.6 to 94
55.8 to 65.5
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0.5 to 2.5
Molybdenum (Mo), % 0 to 0.3
0 to 0.75
Nickel (Ni), % 0 to 2.0
12 to 14
Phosphorus (P), % 0 to 0.040
0 to 0.040
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tin (Sn), % 0 to 0.020
0
Vanadium (V), % 0 to 0.1
0