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SAE-AISI 1046 Steel vs. ASTM Grade LCB Steel

Both SAE-AISI 1046 steel and ASTM grade LCB steel are iron alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1046 steel and the bottom bar is ASTM grade LCB steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 17
27
Fatigue Strength, MPa 240 to 390
200
Poisson's Ratio 0.29
0.29
Reduction in Area, % 39 to 50
40
Shear Modulus, GPa 72
72
Tensile Strength: Ultimate (UTS), MPa 660 to 740
540
Tensile Strength: Yield (Proof), MPa 370 to 610
270

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 95
120
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 990
200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 26
19
Strength to Weight: Bending, points 22 to 23
19
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 23 to 25
17

Alloy Composition

Carbon (C), % 0.43 to 0.5
0 to 0.3
Iron (Fe), % 98.4 to 98.9
97 to 100
Manganese (Mn), % 0.7 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0 to 0.050
0 to 0.045
Residuals, % 0
0 to 1.0