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Austempered Cast Iron vs. EN 1.3555 Steel

Both austempered cast iron and EN 1.3555 steel are iron alloys. They have 88% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is austempered cast iron and the bottom bar is EN 1.3555 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 490
230
Elastic (Young's, Tensile) Modulus, GPa 180
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 62 to 69
75
Tensile Strength: Ultimate (UTS), MPa 860 to 1800
770

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1380
1500
Melting Onset (Solidus), °C 1340
1450
Specific Heat Capacity, J/kg-K 490
460
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
11
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 1.8
5.6
Embodied Energy, MJ/kg 25
81
Embodied Water, L/kg 48
90

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 66
27
Strength to Weight: Bending, points 27 to 44
23
Thermal Shock Resistance, points 25 to 53
22

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Arsenic (As), % 0 to 0.020
0
Carbon (C), % 3.4 to 3.8
0.1 to 0.15
Chromium (Cr), % 0 to 0.1
3.9 to 4.3
Copper (Cu), % 0 to 0.8
0 to 0.1
Iron (Fe), % 89.6 to 94
85.4 to 87.7
Magnesium (Mg), % 0 to 0.040
0
Manganese (Mn), % 0.3 to 0.4
0.15 to 0.35
Molybdenum (Mo), % 0 to 0.3
4.0 to 4.5
Nickel (Ni), % 0 to 2.0
3.2 to 3.6
Phosphorus (P), % 0 to 0.040
0 to 0.015
Selenium (Se), % 0 to 0.030
0
Silicon (Si), % 2.3 to 2.7
0.1 to 0.25
Sulfur (S), % 0 to 0.020
0 to 0.010
Tin (Sn), % 0 to 0.020
0
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 0 to 0.1
1.0 to 1.3