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S31277 Stainless Steel vs. Grey Cast Iron

Both S31277 stainless steel and grey cast iron are iron alloys. They have 42% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
180
Elongation at Break, % 45
9.6
Fatigue Strength, MPa 380
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
69
Shear Strength, MPa 600
180 to 610
Tensile Strength: Ultimate (UTS), MPa 860
160 to 450
Tensile Strength: Yield (Proof), MPa 410
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1180
Specific Heat Capacity, J/kg-K 460
490
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.9
Density, g/cm3 8.1
7.5
Embodied Carbon, kg CO2/kg material 6.7
1.5
Embodied Energy, MJ/kg 90
21
Embodied Water, L/kg 220
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 410
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
5.8 to 17
Strength to Weight: Bending, points 25
8.7 to 17
Thermal Shock Resistance, points 19
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.020
3.1 to 3.4
Chromium (Cr), % 20.5 to 23
0
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 35.5 to 46.2
92.1 to 93.9
Manganese (Mn), % 0 to 3.0
0.5 to 0.7
Molybdenum (Mo), % 6.5 to 8.0
0
Nickel (Ni), % 26 to 28
0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.9
Silicon (Si), % 0 to 0.5
2.5 to 2.8
Sulfur (S), % 0 to 0.010
0 to 0.15