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EN 1.7366 Steel vs. Austempered Cast Iron

Both EN 1.7366 steel and austempered cast iron are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 26 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 EN 1.7366 steel and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 210
270 to 490
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 17 to 19
1.1 to 13
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
62 to 69
Tensile Strength: Ultimate (UTS), MPa 460 to 710
860 to 1800
Tensile Strength: Yield (Proof), MPa 230 to 480
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 40
42
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
2.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 23
25
Embodied Water, L/kg 69
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 110
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 600
880 to 3970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16 to 25
32 to 66
Strength to Weight: Bending, points 17 to 23
27 to 44
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 13 to 20
25 to 53

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0 to 0.18
3.4 to 3.8
Chromium (Cr), % 4.0 to 6.0
0 to 0.1
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 91.9 to 95.3
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0.3 to 0.8
0.3 to 0.4
Molybdenum (Mo), % 0.45 to 0.65
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
2.3 to 2.7
Sulfur (S), % 0 to 0.015
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.1