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SAE-AISI L2 Steel vs. SAE-AISI L3 Steel

Both SAE-AISI L2 steel and SAE-AISI L3 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI L2 steel and the bottom bar is SAE-AISI L3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
72
Tensile Strength: Ultimate (UTS), MPa 590 to 1960
600 to 2250

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
43
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.9
Embodied Energy, MJ/kg 27
27
Embodied Water, L/kg 51
53

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 70
21 to 80
Strength to Weight: Bending, points 20 to 45
20 to 49
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 19 to 65
18 to 67

Alloy Composition

Carbon (C), % 0.45 to 1.0
1.0 to 1.1
Chromium (Cr), % 0.7 to 1.2
1.3 to 1.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 95.5 to 98.7
95.5 to 97.3
Manganese (Mn), % 0.1 to 0.9
0.25 to 0.8
Molybdenum (Mo), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0.1 to 0.3

Comparable Variants