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SAE-AISI A7 Steel vs. Grade 16 Titanium

SAE-AISI A7 steel belongs to the iron alloys classification, while grade 16 titanium belongs to the titanium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is grade 16 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 72
38
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
400

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Melting Completion (Liquidus), °C 1470
1660
Melting Onset (Solidus), °C 1430
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 37
22
Thermal Expansion, µm/m-K 12
9.2

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 13
36
Embodied Energy, MJ/kg 200
600
Embodied Water, L/kg 100
230

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 29 to 77
25
Strength to Weight: Bending, points 25 to 48
27
Thermal Diffusivity, mm2/s 10
8.9
Thermal Shock Resistance, points 27 to 72
29

Alloy Composition

Carbon (C), % 2.0 to 2.9
0 to 0.080
Chromium (Cr), % 5.0 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 81.4 to 87.7
0 to 0.3
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.8 to 99.96
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0
Residuals, % 0
0 to 0.4