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Grade C-6 Titanium vs. SAE-AISI 1140 Steel

Grade C-6 titanium belongs to the titanium alloys classification, while SAE-AISI 1140 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade C-6 titanium and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290
170 to 180
Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 9.0
14 to 18
Fatigue Strength, MPa 460
230 to 370
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 39
72
Tensile Strength: Ultimate (UTS), MPa 890
600 to 700
Tensile Strength: Yield (Proof), MPa 830
340 to 570

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 9.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 30
1.4
Embodied Energy, MJ/kg 480
18
Embodied Water, L/kg 190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
89 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 3300
310 to 870
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 55
21 to 25
Strength to Weight: Bending, points 46
20 to 22
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 63
18 to 21

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.1
0.37 to 0.44
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
98.4 to 98.9
Manganese (Mn), % 0
0.7 to 1.0
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0.080 to 0.13
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.7 to 94
0
Residuals, % 0 to 0.4
0