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ASTM Grade LC3 Steel vs. ACI-ASTM CD3MCuN Steel

Both ASTM grade LC3 steel and ACI-ASTM CD3MCuN steel are iron alloys. Both are furnished in the normalized and tempered condition. They have 66% of their average alloy composition in common. There are 29 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 ASTM grade LC3 steel and the bottom bar is ACI-ASTM CD3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
29
Fatigue Strength, MPa 230
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 570
790
Tensile Strength: Yield (Proof), MPa 310
500

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
20
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.7
3.9
Embodied Energy, MJ/kg 23
54
Embodied Water, L/kg 52
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
200
Resilience: Unit (Modulus of Resilience), kJ/m3 260
620
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
28
Strength to Weight: Bending, points 19
24
Thermal Diffusivity, mm2/s 14
4.1
Thermal Shock Resistance, points 17
22

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 0
24 to 26.7
Copper (Cu), % 0
1.4 to 1.9
Iron (Fe), % 94.4 to 96.5
58.2 to 65.9
Manganese (Mn), % 0.5 to 0.8
0 to 1.2
Molybdenum (Mo), % 0
2.9 to 3.8
Nickel (Ni), % 3.0 to 4.0
5.6 to 6.7
Nitrogen (N), % 0
0.22 to 0.33
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.1
Sulfur (S), % 0 to 0.045
0 to 0.030