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ACI-ASTM CE8MN Steel vs. S41425 Stainless Steel

Both ACI-ASTM CE8MN steel and S41425 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE8MN steel and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
17
Fatigue Strength, MPa 370
450
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 750
920
Tensile Strength: Yield (Proof), MPa 500
750

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
810
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
13
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.2
2.9
Embodied Energy, MJ/kg 58
40
Embodied Water, L/kg 180
120

Common Calculations

PREN (Pitting Resistance) 40
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
150
Resilience: Unit (Modulus of Resilience), kJ/m3 620
1420
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
33
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 4.2
4.4
Thermal Shock Resistance, points 21
33

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 22.5 to 25.5
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 56 to 66.4
74 to 81.9
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 3.0 to 4.5
1.5 to 2.0
Nickel (Ni), % 8.0 to 11
4.0 to 7.0
Nitrogen (N), % 0.1 to 0.3
0.060 to 0.12
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.0050