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ACI-ASTM CE8MN Steel vs. EN 1.4821 Stainless Steel

Both ACI-ASTM CE8MN steel and EN 1.4821 stainless steel are iron alloys. They have a moderately high 91% 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 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
18
Fatigue Strength, MPa 370
280
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 750
730
Tensile Strength: Yield (Proof), MPa 500
450

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 21
15
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 4.2
2.9
Embodied Energy, MJ/kg 58
41
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 40
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 620
500
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.2
4.6
Thermal Shock Resistance, points 21
21

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.2
Chromium (Cr), % 22.5 to 25.5
24.5 to 26.5
Iron (Fe), % 56 to 66.4
64.2 to 71.1
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.5
0
Nickel (Ni), % 8.0 to 11
3.5 to 5.5
Nitrogen (N), % 0.1 to 0.3
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0.8 to 1.5
Sulfur (S), % 0 to 0.040
0 to 0.015