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EN 1.4931 Steel vs. Grey Cast Iron

Both EN 1.4931 steel and grey cast iron are iron alloys. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 17
9.6
Fatigue Strength, MPa 410
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
69
Tensile Strength: Ultimate (UTS), MPa 810
160 to 450
Tensile Strength: Yield (Proof), MPa 620
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1180
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 24
46
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.9
1.5
Embodied Energy, MJ/kg 42
21
Embodied Water, L/kg 100
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 970
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
5.8 to 17
Strength to Weight: Bending, points 25
8.7 to 17
Thermal Diffusivity, mm2/s 6.5
13
Thermal Shock Resistance, points 22
6.0 to 17

Alloy Composition

Carbon (C), % 0.2 to 0.26
3.1 to 3.4
Chromium (Cr), % 11.3 to 12.2
0
Iron (Fe), % 83.2 to 86.8
92.1 to 93.9
Manganese (Mn), % 0.5 to 0.8
0.5 to 0.7
Molybdenum (Mo), % 1.0 to 1.2
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.030
0 to 0.9
Silicon (Si), % 0 to 0.4
2.5 to 2.8
Sulfur (S), % 0 to 0.020
0 to 0.15
Tungsten (W), % 0 to 0.5
0
Vanadium (V), % 0.25 to 0.35
0