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SAE-AISI 12L14 Steel vs. SAE-AISI 1046 Steel

Both SAE-AISI 12L14 steel and SAE-AISI 1046 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI 12L14 steel and the bottom bar is SAE-AISI 1046 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 170
190 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 25
14 to 17
Fatigue Strength, MPa 190 to 290
240 to 390
Poisson's Ratio 0.29
0.29
Reduction in Area, % 39 to 51
39 to 50
Shear Modulus, GPa 72
72
Shear Strength, MPa 280 to 370
410 to 450
Tensile Strength: Ultimate (UTS), MPa 440 to 620
660 to 740
Tensile Strength: Yield (Proof), MPa 260 to 460
370 to 610

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 47
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64 to 93
91 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 560
360 to 990
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 22
23 to 26
Strength to Weight: Bending, points 16 to 20
22 to 23
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 14 to 20
23 to 25

Alloy Composition

Carbon (C), % 0 to 0.15
0.43 to 0.5
Iron (Fe), % 97.9 to 98.7
98.4 to 98.9
Lead (Pb), % 0.15 to 0.35
0
Manganese (Mn), % 0.85 to 1.2
0.7 to 1.0
Phosphorus (P), % 0.040 to 0.090
0 to 0.040
Sulfur (S), % 0.26 to 0.35
0 to 0.050

Comparable Variants