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Grade 6 Titanium vs. ASTM A372 Grade D Steel

Grade 6 titanium belongs to the titanium alloys classification, while ASTM A372 grade D steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 6 titanium and the bottom bar is ASTM A372 grade D steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 11
17
Fatigue Strength, MPa 290
340
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
73
Shear Strength, MPa 530
500
Tensile Strength: Ultimate (UTS), MPa 890
810
Tensile Strength: Yield (Proof), MPa 840
510

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 310
400
Melting Completion (Liquidus), °C 1580
1460
Melting Onset (Solidus), °C 1530
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 7.8
51
Thermal Expansion, µm/m-K 9.4
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.1
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 30
1.5
Embodied Energy, MJ/kg 480
20
Embodied Water, L/kg 190
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
120
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
700
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 55
29
Strength to Weight: Bending, points 46
25
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 65
26

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0.4 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
97.1 to 97.9
Manganese (Mn), % 0
1.4 to 1.8
Molybdenum (Mo), % 0
0.17 to 0.27
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0