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ASTM Grade LCB Steel vs. ASTM A387 Grade 2 Steel

Both ASTM grade LCB steel and ASTM A387 grade 2 steel are iron alloys. They have a very high 99% 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 LCB steel and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
25
Fatigue Strength, MPa 200
190 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 540
470 to 550
Tensile Strength: Yield (Proof), MPa 270
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 45
50

Common Calculations

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

Alloy Composition

Carbon (C), % 0 to 0.3
0.050 to 0.21
Chromium (Cr), % 0
0.5 to 0.8
Iron (Fe), % 97 to 100
97.1 to 98.3
Manganese (Mn), % 0 to 1.0
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.6
0.15 to 0.4
Sulfur (S), % 0 to 0.045
0 to 0.025
Residuals, % 0 to 1.0
0