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ACI-ASTM CD3MCuN Steel vs. ASTM A387 Grade 2 Steel

Both ACI-ASTM CD3MCuN steel and ASTM A387 grade 2 steel are iron alloys. They have 64% of their average alloy composition in common. There are 30 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 ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
25
Fatigue Strength, MPa 370
190 to 250
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 790
470 to 550
Tensile Strength: Yield (Proof), MPa 500
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.9
1.6
Embodied Energy, MJ/kg 54
20
Embodied Water, L/kg 180
50

Common Calculations

PREN (Pitting Resistance) 41
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
180 to 320
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
16 to 20
Strength to Weight: Bending, points 24
17 to 19
Thermal Diffusivity, mm2/s 4.1
12
Thermal Shock Resistance, points 22
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.21
Chromium (Cr), % 24 to 26.7
0.5 to 0.8
Copper (Cu), % 1.4 to 1.9
0
Iron (Fe), % 58.2 to 65.9
97.1 to 98.3
Manganese (Mn), % 0 to 1.2
0.55 to 0.8
Molybdenum (Mo), % 2.9 to 3.8
0.45 to 0.6
Nickel (Ni), % 5.6 to 6.7
0
Nitrogen (N), % 0.22 to 0.33
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.1
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025