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Grade 35 Titanium vs. SAE-AISI H26 Steel

Grade 35 titanium belongs to the titanium alloys classification, while SAE-AISI H26 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is grade 35 titanium and the bottom bar is SAE-AISI H26 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
80
Tensile Strength: Ultimate (UTS), MPa 1000
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 420
240
Melting Completion (Liquidus), °C 1630
1810
Melting Onset (Solidus), °C 1580
1760
Specific Heat Capacity, J/kg-K 550
410
Thermal Conductivity, W/m-K 7.4
22
Thermal Expansion, µm/m-K 9.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 37
45
Density, g/cm3 4.6
9.3
Embodied Carbon, kg CO2/kg material 33
8.1
Embodied Energy, MJ/kg 530
120
Embodied Water, L/kg 170
90

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 35
21
Strength to Weight: Axial, points 61
22 to 63
Strength to Weight: Bending, points 49
19 to 39
Thermal Diffusivity, mm2/s 3.0
5.6
Thermal Shock Resistance, points 70
22 to 63

Alloy Composition

Aluminum (Al), % 4.0 to 5.0
0
Carbon (C), % 0 to 0.080
0.45 to 0.55
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.2 to 0.8
73.3 to 77.5
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 1.5 to 2.5
0
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 88.4 to 93
0
Tungsten (W), % 0
17.3 to 19
Vanadium (V), % 1.1 to 2.1
0.75 to 1.3
Residuals, % 0 to 0.4
0