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SAE-AISI A7 Steel vs. Titanium 6-6-2

SAE-AISI A7 steel belongs to the iron alloys classification, while titanium 6-6-2 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 A7 steel and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 72
44
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
1140 to 1370

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 37
5.5
Thermal Expansion, µm/m-K 12
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
40
Density, g/cm3 7.7
4.8
Embodied Carbon, kg CO2/kg material 13
29
Embodied Energy, MJ/kg 200
470
Embodied Water, L/kg 100
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 29 to 77
66 to 79
Strength to Weight: Bending, points 25 to 48
50 to 57
Thermal Diffusivity, mm2/s 10
2.1
Thermal Shock Resistance, points 27 to 72
75 to 90

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 2.0 to 2.9
0 to 0.050
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 81.4 to 87.7
0.35 to 1.0
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
5.0 to 6.0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Residuals, % 0
0 to 0.4

Comparable Variants