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ACI-ASTM CE8MN Steel vs. EN 1.4408 Stainless Steel

Both ACI-ASTM CE8MN steel and EN 1.4408 stainless steel are iron alloys. They have a moderately high 93% 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 CE8MN steel and the bottom bar is EN 1.4408 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
34
Fatigue Strength, MPa 370
170
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
78
Tensile Strength: Ultimate (UTS), MPa 750
510
Tensile Strength: Yield (Proof), MPa 500
210

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 440
420
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 21
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.2
3.7
Embodied Energy, MJ/kg 58
52
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 40
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140
Resilience: Unit (Modulus of Resilience), kJ/m3 620
110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.2
3.9
Thermal Shock Resistance, points 21
11

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 22.5 to 25.5
18 to 20
Iron (Fe), % 56 to 66.4
62.4 to 71
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 3.0 to 4.5
2.0 to 2.5
Nickel (Ni), % 8.0 to 11
9.0 to 12
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.030