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AISI 304N Stainless Steel vs. Automotive Grey Cast Iron

Both AISI 304N 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 (5, in this case) are not shown.

For each property being compared, the top bar is AISI 304N stainless steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 360
160 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 9.1 to 45
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
69 to 70
Tensile Strength: Ultimate (UTS), MPa 620 to 1180
140 to 290
Tensile Strength: Yield (Proof), MPa 270 to 850
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 290
260 to 280
Melting Completion (Liquidus), °C 1420
1380 to 1390
Melting Onset (Solidus), °C 1380
1340 to 1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
41 to 43
Thermal Expansion, µm/m-K 16
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
1.9 to 3.0
Density, g/cm3 7.8
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 3.0
1.5 to 1.7
Embodied Energy, MJ/kg 43
21 to 24
Embodied Water, L/kg 150
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 280
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 1830
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 42
5.2 to 11
Strength to Weight: Bending, points 21 to 32
8.0 to 13
Thermal Diffusivity, mm2/s 4.2
11 to 12
Thermal Shock Resistance, points 14 to 26
4.2 to 8.6