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Grade 27 Titanium vs. SAE-AISI M36 Steel

Grade 27 titanium belongs to the titanium alloys classification, while SAE-AISI M36 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.

For each property being compared, the top bar is grade 27 titanium and the bottom bar is SAE-AISI M36 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
78
Tensile Strength: Ultimate (UTS), MPa 270
810 to 2190

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Melting Completion (Liquidus), °C 1660
1600
Melting Onset (Solidus), °C 1610
1550
Specific Heat Capacity, J/kg-K 540
440
Thermal Conductivity, W/m-K 21
19
Thermal Expansion, µm/m-K 8.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 37
38
Density, g/cm3 4.5
8.4
Embodied Carbon, kg CO2/kg material 33
9.5
Embodied Energy, MJ/kg 530
140
Embodied Water, L/kg 320
140

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 17
27 to 72
Strength to Weight: Bending, points 21
23 to 44
Thermal Diffusivity, mm2/s 8.8
5.1
Thermal Shock Resistance, points 21
25 to 68

Alloy Composition

Carbon (C), % 0 to 0.080
0.8 to 0.9
Chromium (Cr), % 0
3.8 to 4.5
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
70.1 to 75.5
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.6 to 5.5
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.030
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99 to 99.92
0
Tungsten (W), % 0
5.5 to 6.5
Vanadium (V), % 0
1.8 to 2.3
Residuals, % 0 to 0.4
0