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ACI-ASTM CD3MCuN Steel vs. S32304 Stainless Steel

Both ACI-ASTM CD3MCuN steel and S32304 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 (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MCuN steel and the bottom bar is S32304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
28
Fatigue Strength, MPa 370
330
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 790
670
Tensile Strength: Yield (Proof), MPa 500
460

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
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 20
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.9
2.8
Embodied Energy, MJ/kg 54
40
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 41
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
170
Resilience: Unit (Modulus of Resilience), kJ/m3 620
520
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
24
Strength to Weight: Bending, points 24
22
Thermal Diffusivity, mm2/s 4.1
4.0
Thermal Shock Resistance, points 22
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26.7
21.5 to 24.5
Copper (Cu), % 1.4 to 1.9
0.050 to 0.6
Iron (Fe), % 58.2 to 65.9
65 to 75.4
Manganese (Mn), % 0 to 1.2
0 to 2.5
Molybdenum (Mo), % 2.9 to 3.8
0.050 to 0.6
Nickel (Ni), % 5.6 to 6.7
3.0 to 5.5
Nitrogen (N), % 0.22 to 0.33
0.050 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.1
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030