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Automotive Grey Cast Iron vs. AISI 316H Stainless Steel

Both automotive grey cast iron and AISI 316H stainless steel are iron alloys. There are 28 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 automotive grey cast iron and the bottom bar is AISI 316H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 280
190
Elastic (Young's, Tensile) Modulus, GPa 180
200
Elongation at Break, % 9.6 to 14
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 69 to 70
78
Tensile Strength: Ultimate (UTS), MPa 140 to 290
580
Tensile Strength: Yield (Proof), MPa 94 to 200
230

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
290
Melting Completion (Liquidus), °C 1380 to 1390
1450
Melting Onset (Solidus), °C 1340 to 1350
1400
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 41 to 43
16
Thermal Expansion, µm/m-K 12 to 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
19
Density, g/cm3 7.5 to 7.6
7.9
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
3.9
Embodied Energy, MJ/kg 21 to 24
53
Embodied Water, L/kg 44 to 51
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
190
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 5.2 to 11
21
Strength to Weight: Bending, points 8.0 to 13
20
Thermal Diffusivity, mm2/s 11 to 12
4.2
Thermal Shock Resistance, points 4.2 to 8.6
13