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SAE-AISI 1140 Steel vs. Grade 13 Titanium

SAE-AISI 1140 steel belongs to the iron alloys classification, while grade 13 titanium belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1140 steel and the bottom bar is grade 13 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 18
27
Fatigue Strength, MPa 230 to 370
140
Poisson's Ratio 0.29
0.32
Reduction in Area, % 39 to 46
34
Shear Modulus, GPa 72
41
Shear Strength, MPa 370 to 420
200
Tensile Strength: Ultimate (UTS), MPa 600 to 700
310
Tensile Strength: Yield (Proof), MPa 340 to 570
190

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 51
22
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
32
Embodied Energy, MJ/kg 18
520
Embodied Water, L/kg 46
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
73
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 21 to 25
19
Strength to Weight: Bending, points 20 to 22
22
Thermal Diffusivity, mm2/s 14
8.9
Thermal Shock Resistance, points 18 to 21
24

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.080
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.4 to 98.9
0 to 0.2
Manganese (Mn), % 0.7 to 1.0
0
Nickel (Ni), % 0
0.4 to 0.6
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Ruthenium (Ru), % 0
0.040 to 0.060
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
98.5 to 99.56
Residuals, % 0
0 to 0.4