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S31730 Stainless Steel vs. Automotive Grey Cast Iron

Both S31730 stainless steel and automotive grey cast iron are iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
160 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 40
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
69 to 70
Tensile Strength: Ultimate (UTS), MPa 540
140 to 290
Tensile Strength: Yield (Proof), MPa 200
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 290
260 to 280
Melting Completion (Liquidus), °C 1430
1380 to 1390
Melting Onset (Solidus), °C 1390
1340 to 1350
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 16
12 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 24
1.9 to 3.0
Density, g/cm3 8.0
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 4.6
1.5 to 1.7
Embodied Energy, MJ/kg 63
21 to 24
Embodied Water, L/kg 180
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 99
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
5.2 to 11
Strength to Weight: Bending, points 18
8.0 to 13
Thermal Shock Resistance, points 12
4.2 to 8.6