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EN 1.4901 Stainless Steel vs. Automotive Grey Cast Iron

Both EN 1.4901 stainless steel and automotive grey cast iron are iron alloys. There are 27 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 EN 1.4901 stainless steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 19
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
69 to 70
Tensile Strength: Ultimate (UTS), MPa 740
140 to 290
Tensile Strength: Yield (Proof), MPa 490
94 to 200

Thermal Properties

Latent Heat of Fusion, J/g 260
260 to 280
Melting Completion (Liquidus), °C 1490
1380 to 1390
Melting Onset (Solidus), °C 1450
1340 to 1350
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 26
41 to 43
Thermal Expansion, µm/m-K 12
12 to 14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
7.4 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
8.8 to 9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.9 to 3.0
Density, g/cm3 7.9
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 2.8
1.5 to 1.7
Embodied Energy, MJ/kg 40
21 to 24
Embodied Water, L/kg 89
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 620
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
5.2 to 11
Strength to Weight: Bending, points 23
8.0 to 13
Thermal Diffusivity, mm2/s 6.9
11 to 12
Thermal Shock Resistance, points 23
4.2 to 8.6