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AISI 384 Stainless Steel vs. ACI-ASTM CD3MCuN Steel

Both AISI 384 stainless steel and ACI-ASTM CD3MCuN steel are iron alloys. They have 85% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 384 stainless steel and the bottom bar is ACI-ASTM CD3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 480
790

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 910
1100
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 16
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
20
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.7
3.9
Embodied Energy, MJ/kg 52
54
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 16
41
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
28
Strength to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 11
22

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 15 to 17
24 to 26.7
Copper (Cu), % 0
1.4 to 1.9
Iron (Fe), % 60.9 to 68
58.2 to 65.9
Manganese (Mn), % 0 to 2.0
0 to 1.2
Molybdenum (Mo), % 0
2.9 to 3.8
Nickel (Ni), % 17 to 19
5.6 to 6.7
Nitrogen (N), % 0
0.22 to 0.33
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.1
Sulfur (S), % 0 to 0.030
0 to 0.030