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SAE-AISI 1140 Steel vs. R56406 Titanium

SAE-AISI 1140 steel belongs to the iron alloys classification, while R56406 titanium belongs to the titanium alloys. 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 1140 steel and the bottom bar is R56406 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 18
9.1
Fatigue Strength, MPa 230 to 370
480
Poisson's Ratio 0.29
0.32
Reduction in Area, % 39 to 46
16
Shear Modulus, GPa 72
40
Tensile Strength: Ultimate (UTS), MPa 600 to 700
980
Tensile Strength: Yield (Proof), MPa 340 to 570
850

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 400
340
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 51
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
38
Embodied Energy, MJ/kg 18
610
Embodied Water, L/kg 46
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
85
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
3420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 21 to 25
61
Strength to Weight: Bending, points 20 to 22
49
Thermal Diffusivity, mm2/s 14
2.8
Thermal Shock Resistance, points 18 to 21
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.37 to 0.44
0 to 0.1
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.4 to 98.9
0 to 0.3
Manganese (Mn), % 0.7 to 1.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
88.1 to 91
Vanadium (V), % 0
3.5 to 4.5