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Grey Cast Iron vs. AISI 405 Stainless Steel

Both grey cast iron and AISI 405 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 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 grey cast iron and the bottom bar is AISI 405 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
170
Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 9.6
22
Fatigue Strength, MPa 69 to 170
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69
76
Shear Strength, MPa 180 to 610
300
Tensile Strength: Ultimate (UTS), MPa 160 to 450
470
Tensile Strength: Yield (Proof), MPa 98 to 290
200

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1380
1530
Melting Onset (Solidus), °C 1180
1480
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 46
30
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
7.0
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 21
28
Embodied Water, L/kg 44
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
84
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 5.8 to 17
17
Strength to Weight: Bending, points 8.7 to 17
17
Thermal Diffusivity, mm2/s 13
8.1
Thermal Shock Resistance, points 6.0 to 17
16

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.3
Carbon (C), % 3.1 to 3.4
0 to 0.080
Chromium (Cr), % 0
11.5 to 14.5
Iron (Fe), % 92.1 to 93.9
82.5 to 88.4
Manganese (Mn), % 0.5 to 0.7
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0 to 0.9
0 to 0.040
Silicon (Si), % 2.5 to 2.8
0 to 1.0
Sulfur (S), % 0 to 0.15
0 to 0.030