MakeItFrom.com
Menu (ESC)

S31803 Stainless Steel vs. Grey Cast Iron

Both S31803 stainless steel and grey cast iron are iron alloys. They have 69% of their average alloy composition in common. There are 30 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 S31803 stainless steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 29
9.6
Fatigue Strength, MPa 370
69 to 170
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
69
Shear Strength, MPa 460
180 to 610
Tensile Strength: Ultimate (UTS), MPa 710
160 to 450
Tensile Strength: Yield (Proof), MPa 500
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1450
1380
Melting Onset (Solidus), °C 1400
1180
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 17
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 3.6
1.5
Embodied Energy, MJ/kg 49
21
Embodied Water, L/kg 160
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 630
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
5.8 to 17
Strength to Weight: Bending, points 23
8.7 to 17
Thermal Diffusivity, mm2/s 4.3
13
Thermal Shock Resistance, points 20
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.030
3.1 to 3.4
Chromium (Cr), % 21 to 23
0
Iron (Fe), % 63.7 to 71.9
92.1 to 93.9
Manganese (Mn), % 0 to 2.0
0.5 to 0.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.9
Silicon (Si), % 0 to 1.0
2.5 to 2.8
Sulfur (S), % 0 to 0.020
0 to 0.15