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ACI-ASTM CD3MN Steel vs. EN 1.4821 Stainless Steel

Both ACI-ASTM CD3MN steel and EN 1.4821 stainless steel are iron alloys. They have a very high 95% 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 CD3MN 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 340
280
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 710
730
Tensile Strength: Yield (Proof), MPa 460
450

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1060
1100
Melting Completion (Liquidus), °C 1450
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 18
15
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.6
2.9
Embodied Energy, MJ/kg 50
41
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 35
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 530
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 4.3
4.6
Thermal Shock Resistance, points 20
21

Alloy Composition

Carbon (C), % 0 to 0.030
0.1 to 0.2
Chromium (Cr), % 21 to 23.5
24.5 to 26.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 62.6 to 71.9
64.2 to 71.1
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
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 1.0
0.8 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.015