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EN 1.3955 Stainless Steel vs. Automotive Grey Cast Iron

Both EN 1.3955 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3955 stainless steel and the bottom bar is automotive grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 23
9.6 to 14
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
69 to 70
Tensile Strength: Ultimate (UTS), MPa 520
140 to 290
Tensile Strength: Yield (Proof), MPa 220
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 1380
1340 to 1350
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
41 to 43
Thermal Expansion, µm/m-K 12
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 16
1.9 to 3.0
Density, g/cm3 7.8
7.5 to 7.6
Embodied Carbon, kg CO2/kg material 3.2
1.5 to 1.7
Embodied Energy, MJ/kg 45
21 to 24
Embodied Water, L/kg 140
44 to 51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
18 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 130
25 to 110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
5.2 to 11
Strength to Weight: Bending, points 18
8.0 to 13
Thermal Diffusivity, mm2/s 4.1
11 to 12
Thermal Shock Resistance, points 15
4.2 to 8.6