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AISI 420F Stainless Steel vs. ACI-ASTM CE8MN Steel

Both AISI 420F stainless steel and ACI-ASTM CE8MN steel are iron alloys. They have 76% 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 AISI 420F stainless steel and the bottom bar is ACI-ASTM CE8MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
29
Fatigue Strength, MPa 270
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 740
750
Tensile Strength: Yield (Proof), MPa 430
500

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
16
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
21
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
4.2
Embodied Energy, MJ/kg 28
58
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 14
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 480
620
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
27
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 6.8
4.2
Thermal Shock Resistance, points 27
21

Alloy Composition

Carbon (C), % 0.3 to 0.4
0 to 0.080
Chromium (Cr), % 12 to 14
22.5 to 25.5
Iron (Fe), % 82.4 to 87.6
56 to 66.4
Manganese (Mn), % 0 to 1.3
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.5
Nickel (Ni), % 0
8.0 to 11
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0.15 to 0.35
0 to 0.040