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Grade 37 Titanium vs. SAE-AISI 1008 Steel

Grade 37 titanium belongs to the titanium alloys classification, while SAE-AISI 1008 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 37 titanium and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 22
22 to 33
Fatigue Strength, MPa 170
150 to 220
Poisson's Ratio 0.32
0.29
Reduction in Area, % 34
50 to 63
Shear Modulus, GPa 40
73
Shear Strength, MPa 240
220 to 230
Tensile Strength: Ultimate (UTS), MPa 390
330 to 370
Tensile Strength: Yield (Proof), MPa 250
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 310
400
Melting Completion (Liquidus), °C 1650
1470
Melting Onset (Solidus), °C 1600
1430
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 21
62
Thermal Expansion, µm/m-K 8.9
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.8
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
1.4
Embodied Energy, MJ/kg 500
18
Embodied Water, L/kg 120
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 280
92 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 24
12 to 13
Strength to Weight: Bending, points 26
13 to 15
Thermal Diffusivity, mm2/s 8.4
17
Thermal Shock Resistance, points 29
10 to 12

Alloy Composition

Aluminum (Al), % 1.0 to 2.0
0
Carbon (C), % 0 to 0.080
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
99.31 to 99.7
Manganese (Mn), % 0
0.3 to 0.5
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 96.9 to 99
0
Residuals, % 0 to 0.4
0