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SAE-AISI D7 Steel vs. R56406 Titanium

SAE-AISI D7 steel belongs to the iron alloys classification, while R56406 titanium belongs to the titanium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is R56406 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
980

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 27
7.1
Thermal Expansion, µm/m-K 11
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 7.6
4.5
Embodied Carbon, kg CO2/kg material 11
38
Embodied Energy, MJ/kg 180
610
Embodied Water, L/kg 130
200

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 29 to 78
61
Strength to Weight: Bending, points 25 to 48
49
Thermal Diffusivity, mm2/s 7.4
2.8
Thermal Shock Resistance, points 27 to 72
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 2.2 to 2.5
0 to 0.1
Chromium (Cr), % 11.5 to 13.5
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 76.6 to 81.9
0 to 0.3
Manganese (Mn), % 0 to 0.6
0
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.1 to 91
Vanadium (V), % 3.8 to 4.4
3.5 to 4.5