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S20910 Stainless Steel vs. Grey Cast Iron

Both S20910 stainless steel and grey cast iron are iron alloys. They have 58% 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 S20910 stainless steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 14 to 39
9.6
Fatigue Strength, MPa 310 to 460
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
69
Shear Strength, MPa 500 to 570
180 to 610
Tensile Strength: Ultimate (UTS), MPa 780 to 940
160 to 450
Tensile Strength: Yield (Proof), MPa 430 to 810
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1420
1380
Melting Onset (Solidus), °C 1380
1180
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 13
46
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 4.8
1.5
Embodied Energy, MJ/kg 68
21
Embodied Water, L/kg 180
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 33
5.8 to 17
Strength to Weight: Bending, points 24 to 27
8.7 to 17
Thermal Diffusivity, mm2/s 3.6
13
Thermal Shock Resistance, points 17 to 21
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.060
3.1 to 3.4
Chromium (Cr), % 20.5 to 23.5
0
Iron (Fe), % 52.1 to 62.1
92.1 to 93.9
Manganese (Mn), % 4.0 to 6.0
0.5 to 0.7
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.9
Silicon (Si), % 0 to 0.75
2.5 to 2.8
Sulfur (S), % 0 to 0.030
0 to 0.15
Vanadium (V), % 0.1 to 0.3
0