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S17400 Stainless Steel vs. Automotive Grey Cast Iron

Both S17400 stainless steel and automotive grey cast iron are iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S17400 stainless steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 440
160 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 11 to 21
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
69 to 70
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
140 to 290
Tensile Strength: Yield (Proof), MPa 580 to 1250
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
260 to 280
Melting Completion (Liquidus), °C 1440
1380 to 1390
Melting Onset (Solidus), °C 1400
1340 to 1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 17
41 to 43
Thermal Expansion, µm/m-K 11
12 to 14

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 14
1.9 to 3.0
Density, g/cm3 7.8
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 2.7
1.5 to 1.7
Embodied Energy, MJ/kg 39
21 to 24
Embodied Water, L/kg 130
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 49
5.2 to 11
Strength to Weight: Bending, points 27 to 35
8.0 to 13
Thermal Diffusivity, mm2/s 4.5
11 to 12
Thermal Shock Resistance, points 30 to 46
4.2 to 8.6