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SAE-AISI 1140 Steel vs. Grade 36 Titanium

SAE-AISI 1140 steel belongs to the iron alloys classification, while grade 36 titanium belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 36 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14 to 18
11
Fatigue Strength, MPa 230 to 370
300
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 72
39
Shear Strength, MPa 370 to 420
320
Tensile Strength: Ultimate (UTS), MPa 600 to 700
530
Tensile Strength: Yield (Proof), MPa 340 to 570
520

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
2020
Melting Onset (Solidus), °C 1420
1950
Specific Heat Capacity, J/kg-K 470
420
Thermal Expansion, µm/m-K 13
8.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
6.3
Embodied Carbon, kg CO2/kg material 1.4
58
Embodied Energy, MJ/kg 18
920
Embodied Water, L/kg 46
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
59
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
1260
Stiffness to Weight: Axial, points 13
9.3
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 25
23
Strength to Weight: Bending, points 20 to 22
23
Thermal Shock Resistance, points 18 to 21
45

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.030
Hydrogen (H), % 0
0 to 0.0035
Iron (Fe), % 98.4 to 98.9
0 to 0.030
Manganese (Mn), % 0.7 to 1.0
0
Niobium (Nb), % 0
42 to 47
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.040
0
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
52.3 to 58
Residuals, % 0
0 to 0.4