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Grey Cast Iron vs. EN 1.4742 Stainless Steel

Both grey cast iron and EN 1.4742 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is EN 1.4742 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
180
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 9.6
17
Fatigue Strength, MPa 69 to 170
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
77
Shear Strength, MPa 180 to 610
370
Tensile Strength: Ultimate (UTS), MPa 160 to 450
600
Tensile Strength: Yield (Proof), MPa 98 to 290
300

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1380
1420
Melting Onset (Solidus), °C 1180
1380
Specific Heat Capacity, J/kg-K 490
490
Thermal Conductivity, W/m-K 46
19
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.0
Density, g/cm3 7.5
7.6
Embodied Carbon, kg CO2/kg material 1.5
2.2
Embodied Energy, MJ/kg 21
32
Embodied Water, L/kg 44
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
84
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 5.8 to 17
22
Strength to Weight: Bending, points 8.7 to 17
21
Thermal Diffusivity, mm2/s 13
5.1
Thermal Shock Resistance, points 6.0 to 17
21

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.2
Carbon (C), % 3.1 to 3.4
0 to 0.12
Chromium (Cr), % 0
17 to 19
Iron (Fe), % 92.1 to 93.9
77.2 to 81.6
Manganese (Mn), % 0.5 to 0.7
0 to 1.0
Phosphorus (P), % 0 to 0.9
0 to 0.040
Silicon (Si), % 2.5 to 2.8
0.7 to 1.4
Sulfur (S), % 0 to 0.15
0 to 0.015