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AISI 301 Stainless Steel vs. Grey Cast Iron

Both AISI 301 stainless steel and grey cast iron are iron alloys. They have 76% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 301 stainless steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 440
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 200
180
Elongation at Break, % 7.4 to 46
9.6
Fatigue Strength, MPa 210 to 600
69 to 170
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
69
Shear Strength, MPa 410 to 860
180 to 610
Tensile Strength: Ultimate (UTS), MPa 590 to 1460
160 to 450
Tensile Strength: Yield (Proof), MPa 230 to 1080
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1420
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 17
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 13
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.7
1.5
Embodied Energy, MJ/kg 39
21
Embodied Water, L/kg 130
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 300
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 2970
27 to 240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 52
5.8 to 17
Strength to Weight: Bending, points 20 to 37
8.7 to 17
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 12 to 31
6.0 to 17

Alloy Composition

Carbon (C), % 0 to 0.15
3.1 to 3.4
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 70.7 to 78
92.1 to 93.9
Manganese (Mn), % 0 to 2.0
0.5 to 0.7
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0 to 0.1
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