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SAE-AISI H26 Steel vs. Grade 26 Titanium

SAE-AISI H26 steel belongs to the iron alloys classification, while grade 26 titanium belongs to the titanium 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 SAE-AISI H26 steel and the bottom bar is grade 26 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 80
41
Tensile Strength: Ultimate (UTS), MPa 720 to 2100
390

Thermal Properties

Latent Heat of Fusion, J/g 240
420
Melting Completion (Liquidus), °C 1810
1660
Melting Onset (Solidus), °C 1760
1610
Specific Heat Capacity, J/kg-K 410
540
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 12
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 45
37
Density, g/cm3 9.3
4.5
Embodied Carbon, kg CO2/kg material 8.1
33
Embodied Energy, MJ/kg 120
530
Embodied Water, L/kg 90
320

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
35
Strength to Weight: Axial, points 22 to 63
24
Strength to Weight: Bending, points 19 to 39
26
Thermal Diffusivity, mm2/s 5.6
8.6
Thermal Shock Resistance, points 22 to 63
28

Alloy Composition

Carbon (C), % 0.45 to 0.55
0 to 0.080
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 73.3 to 77.5
0 to 0.3
Manganese (Mn), % 0.15 to 0.4
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.15 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.8 to 99.92
Tungsten (W), % 17.3 to 19
0
Vanadium (V), % 0.75 to 1.3
0
Residuals, % 0
0 to 0.4