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SAE-AISI 1045 Steel vs. Grade 33 Titanium

SAE-AISI 1045 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 1045 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 18
23
Fatigue Strength, MPa 220 to 370
250
Poisson's Ratio 0.29
0.32
Reduction in Area, % 40 to 51
34
Shear Modulus, GPa 72
41
Shear Strength, MPa 380 to 410
240
Tensile Strength: Ultimate (UTS), MPa 620 to 680
390
Tensile Strength: Yield (Proof), MPa 330 to 580
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 8.1
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 84 to 93
86
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 900
590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22 to 24
24
Strength to Weight: Bending, points 21 to 22
26
Thermal Diffusivity, mm2/s 14
8.7
Thermal Shock Resistance, points 20 to 22
30

Alloy Composition

Carbon (C), % 0.43 to 0.5
0 to 0.080
Chromium (Cr), % 0
0.1 to 0.2
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 98.5 to 99
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