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Austempered Cast Iron vs. EN 1.7106 Steel

Both austempered cast iron and EN 1.7106 steel are iron alloys. They have a moderately high 95% 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 EN 1.7106 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 490
200 to 500
Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 62 to 69
72
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
660 to 2020

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1340
1390
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 42
46
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
2.1
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 25
20
Embodied Water, L/kg 48
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 66
24 to 73
Strength to Weight: Bending, points 27 to 44
22 to 46
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 25 to 53
20 to 61

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0.52 to 0.6
Chromium (Cr), % 0 to 0.1
0.2 to 0.45
Copper (Cu), % 0 to 0.8
0
Iron (Fe), % 89.6 to 94
95.9 to 97
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0.7 to 1.0
Molybdenum (Mo), % 0 to 0.3
0
Nickel (Ni), % 0 to 2.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
1.6 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.025
Tin (Sn), % 0 to 0.020
0
Vanadium (V), % 0 to 0.1
0