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EN 1.3955 Stainless Steel vs. Grey Cast Iron

Both EN 1.3955 stainless steel and grey cast iron are iron alloys. They have 71% of their average alloy composition in common. There are 28 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 1.3955 stainless steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 23
9.6
Fatigue Strength, MPa 150
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
69
Tensile Strength: Ultimate (UTS), MPa 520
160 to 450
Tensile Strength: Yield (Proof), MPa 220
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1380
1180
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 3.2
1.5
Embodied Energy, MJ/kg 45
21
Embodied Water, L/kg 140
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 130
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
5.8 to 17
Strength to Weight: Bending, points 18
8.7 to 17
Thermal Diffusivity, mm2/s 4.1
13
Thermal Shock Resistance, points 15
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.15
3.1 to 3.4
Chromium (Cr), % 16.5 to 18.5
0
Iron (Fe), % 65.5 to 73.5
92.1 to 93.9
Manganese (Mn), % 0 to 2.0
0.5 to 0.7
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 10 to 12
0
Phosphorus (P), % 0 to 0.045
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.030
0 to 0.15