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ASTM Grade LC9 Steel vs. ACI-ASTM CD6MN Steel

Both ASTM grade LC9 steel and ACI-ASTM CD6MN steel are iron alloys. They have 72% of their average alloy composition in common. There are 27 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 ASTM grade LC9 steel and the bottom bar is ACI-ASTM CD6MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22
28
Fatigue Strength, MPa 420
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 660
730
Tensile Strength: Yield (Proof), MPa 590
510

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.3
3.4
Embodied Energy, MJ/kg 31
48
Embodied Water, L/kg 65
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
180
Resilience: Unit (Modulus of Resilience), kJ/m3 920
650
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
26
Strength to Weight: Bending, points 21
23
Thermal Shock Resistance, points 20
20

Alloy Composition

Carbon (C), % 0 to 0.13
0 to 0.060
Chromium (Cr), % 0 to 0.5
24 to 27
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.4 to 91.5
62.1 to 70.1
Manganese (Mn), % 0 to 0.9
0 to 1.0
Molybdenum (Mo), % 0 to 0.2
1.8 to 2.5
Nickel (Ni), % 8.5 to 10
4.0 to 6.0
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.040
Vanadium (V), % 0 to 0.030
0