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SAE-AISI T15 Steel vs. R56401 Titanium

SAE-AISI T15 steel belongs to the iron alloys classification, while R56401 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.

For each property being compared, the top bar is SAE-AISI T15 steel and the bottom bar is R56401 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
940

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Melting Completion (Liquidus), °C 1690
1610
Melting Onset (Solidus), °C 1640
1560
Specific Heat Capacity, J/kg-K 430
560
Thermal Conductivity, W/m-K 21
7.1
Thermal Expansion, µm/m-K 12
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 43
36
Density, g/cm3 8.7
4.5
Embodied Carbon, kg CO2/kg material 16
38
Embodied Energy, MJ/kg 250
610
Embodied Water, L/kg 140
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
35
Strength to Weight: Axial, points 26 to 71
59
Strength to Weight: Bending, points 22 to 43
48
Thermal Diffusivity, mm2/s 5.6
2.9
Thermal Shock Resistance, points 26 to 70
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 1.5 to 1.6
0 to 0.080
Chromium (Cr), % 3.8 to 5.0
0
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 67.5 to 73.5
0 to 0.25
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.5 to 91
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
3.5 to 4.5