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SAE-AISI 1040 Steel vs. Grade 33 Titanium

SAE-AISI 1040 steel belongs to the iron alloys classification, while grade 33 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 1040 steel and the bottom bar is grade 33 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 13 to 20
23
Fatigue Strength, MPa 220 to 340
250
Poisson's Ratio 0.29
0.32
Reduction in Area, % 40 to 45
34
Shear Modulus, GPa 73
41
Shear Strength, MPa 350 to 390
240
Tensile Strength: Ultimate (UTS), MPa 570 to 640
390
Tensile Strength: Yield (Proof), MPa 320 to 530
350

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
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
55
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
33
Embodied Energy, MJ/kg 18
530
Embodied Water, L/kg 46
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 96
86
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 760
590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 20 to 23
24
Strength to Weight: Bending, points 19 to 21
26
Thermal Diffusivity, mm2/s 14
8.7
Thermal Shock Resistance, points 18 to 20
30

Alloy Composition

Carbon (C), % 0.37 to 0.44
0 to 0.080
Chromium (Cr), % 0
0.1 to 0.2
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.6 to 99.03
0 to 0.3
Manganese (Mn), % 0.6 to 0.9
0
Nickel (Ni), % 0
0.35 to 0.55
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.010 to 0.020
Phosphorus (P), % 0 to 0.040
0
Ruthenium (Ru), % 0
0.020 to 0.040
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
98.1 to 99.52
Residuals, % 0
0 to 0.4