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SAE-AISI M2 Steel vs. Grade 28 Titanium

SAE-AISI M2 steel belongs to the iron alloys classification, while grade 28 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 M2 steel and the bottom bar is grade 28 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 77
40
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
690 to 980

Thermal Properties

Latent Heat of Fusion, J/g 260
410
Melting Completion (Liquidus), °C 1610
1640
Melting Onset (Solidus), °C 1570
1590
Specific Heat Capacity, J/kg-K 440
550
Thermal Conductivity, W/m-K 22
8.3
Thermal Expansion, µm/m-K 10
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 24
36
Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 8.8
37
Embodied Energy, MJ/kg 130
600
Embodied Water, L/kg 98
370

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 25 to 71
43 to 61
Strength to Weight: Bending, points 22 to 44
39 to 49
Thermal Diffusivity, mm2/s 5.9
3.4
Thermal Shock Resistance, points 27 to 76
47 to 66

Alloy Composition


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Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.78 to 1.1
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), % 78.5 to 83.4
0 to 0.25
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
92.4 to 95.4
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
2.0 to 3.0
Residuals, % 0
0 to 0.4

Comparable Variants