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ACI-ASTM CE3MN Steel vs. S31266 Stainless Steel

Both ACI-ASTM CE3MN steel and S31266 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE3MN steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 20
40
Fatigue Strength, MPa 380
400
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
81
Tensile Strength: Ultimate (UTS), MPa 770
860
Tensile Strength: Yield (Proof), MPa 590
470

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 21
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 4.2
6.5
Embodied Energy, MJ/kg 58
89
Embodied Water, L/kg 180
220

Common Calculations

PREN (Pitting Resistance) 43
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
290
Resilience: Unit (Modulus of Resilience), kJ/m3 840
540
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
29
Strength to Weight: Bending, points 24
24
Thermal Diffusivity, mm2/s 4.1
3.1
Thermal Shock Resistance, points 21
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 58.1 to 65.9
34.1 to 46
Manganese (Mn), % 0 to 1.5
2.0 to 4.0
Molybdenum (Mo), % 4.0 to 5.0
5.2 to 6.2
Nickel (Ni), % 6.0 to 8.0
21 to 24
Nitrogen (N), % 0.1 to 0.3
0.35 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5