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ACI-ASTM CD3MN Steel vs. S32520 Stainless Steel

Both ACI-ASTM CD3MN steel and S32520 stainless steel are iron alloys. They have a moderately 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 (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MN steel and the bottom bar is S32520 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
28
Fatigue Strength, MPa 340
460
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 710
860
Tensile Strength: Yield (Proof), MPa 460
630

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1060
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 18
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
4.0
Embodied Energy, MJ/kg 50
55
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 35
41
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
220
Resilience: Unit (Modulus of Resilience), kJ/m3 530
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
31
Strength to Weight: Bending, points 23
26
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 20
24

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 21 to 23.5
24 to 26
Copper (Cu), % 0 to 1.0
0.5 to 2.0
Iron (Fe), % 62.6 to 71.9
57.3 to 66.8
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 2.5 to 3.5
3.0 to 4.0
Nickel (Ni), % 4.5 to 6.5
5.5 to 8.0
Nitrogen (N), % 0.1 to 0.3
0.2 to 0.35
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020