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SAE-AISI 12L14 Steel vs. SAE-AISI 1108 Steel

Both SAE-AISI 12L14 steel and SAE-AISI 1108 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 1108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 170
110 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 25
23 to 34
Fatigue Strength, MPa 190 to 290
170 to 260
Poisson's Ratio 0.29
0.29
Reduction in Area, % 39 to 51
45 to 57
Shear Modulus, GPa 72
73
Shear Strength, MPa 280 to 370
250 to 280
Tensile Strength: Ultimate (UTS), MPa 440 to 620
380 to 440
Tensile Strength: Yield (Proof), MPa 260 to 460
220 to 360

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
52
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.9
7.9
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
95 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 560
130 to 340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 22
13 to 16
Strength to Weight: Bending, points 16 to 20
15 to 16
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 14 to 20
12 to 14

Alloy Composition

Carbon (C), % 0 to 0.15
0.080 to 0.13
Iron (Fe), % 97.9 to 98.7
98.9 to 99.24
Lead (Pb), % 0.15 to 0.35
0
Manganese (Mn), % 0.85 to 1.2
0.6 to 0.8
Phosphorus (P), % 0.040 to 0.090
0 to 0.040
Sulfur (S), % 0.26 to 0.35
0.080 to 0.13

Comparable Variants