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SAE-AISI M3 Class 2 Steel vs. Grade 36 Titanium

SAE-AISI M3 class 2 steel belongs to the iron alloys classification, while grade 36 titanium belongs to the titanium alloys. There are 18 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 M3 class 2 steel and the bottom bar is grade 36 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 77
39
Tensile Strength: Ultimate (UTS), MPa 770 to 2210
530

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Melting Completion (Liquidus), °C 1620
2020
Melting Onset (Solidus), °C 1570
1950
Specific Heat Capacity, J/kg-K 440
420
Thermal Expansion, µm/m-K 12
8.1

Otherwise Unclassified Properties

Density, g/cm3 8.3
6.3
Embodied Carbon, kg CO2/kg material 12
58
Embodied Energy, MJ/kg 180
920
Embodied Water, L/kg 110
130

Common Calculations

Stiffness to Weight: Axial, points 13
9.3
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 74
23
Strength to Weight: Bending, points 22 to 45
23
Thermal Shock Resistance, points 24 to 69
45

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.0035
Iron (Fe), % 75.8 to 82.3
0 to 0.030
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 6.5
0
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0
42 to 47
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
52.3 to 58
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.8 to 3.8
0
Residuals, % 0
0 to 0.4