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Grade 6 Titanium vs. SAE-AISI M3 Class 1 Steel

Grade 6 titanium belongs to the titanium alloys classification, while SAE-AISI M3 class 1 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 6 titanium and the bottom bar is SAE-AISI M3 class 1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
77
Tensile Strength: Ultimate (UTS), MPa 890
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Melting Completion (Liquidus), °C 1580
1610
Melting Onset (Solidus), °C 1530
1570
Specific Heat Capacity, J/kg-K 550
440
Thermal Conductivity, W/m-K 7.8
26
Thermal Expansion, µm/m-K 9.4
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
25
Density, g/cm3 4.5
8.3
Embodied Carbon, kg CO2/kg material 30
10
Embodied Energy, MJ/kg 480
150
Embodied Water, L/kg 190
100

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 55
26 to 72
Strength to Weight: Bending, points 46
22 to 44
Thermal Diffusivity, mm2/s 3.2
7.2
Thermal Shock Resistance, points 65
24 to 67

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
1.0 to 1.1
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
76.9 to 82.9
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.3 to 2.8
Residuals, % 0 to 0.4
0