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Titanium 6-5-0.5 vs. ASTM Grade HK Steel

Titanium 6-5-0.5 belongs to the titanium alloys classification, while ASTM grade HK steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is titanium 6-5-0.5 and the bottom bar is ASTM grade HK steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 6.7
11
Fatigue Strength, MPa 530
150
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
79
Tensile Strength: Ultimate (UTS), MPa 1080
500
Tensile Strength: Yield (Proof), MPa 990
270

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 300
1100
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1560
1350
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 4.2
15
Thermal Expansion, µm/m-K 9.4
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 41
25
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
4.4
Embodied Energy, MJ/kg 540
63
Embodied Water, L/kg 180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
48
Resilience: Unit (Modulus of Resilience), kJ/m3 4630
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 67
18
Strength to Weight: Bending, points 52
18
Thermal Diffusivity, mm2/s 1.7
3.9
Thermal Shock Resistance, points 79
11

Alloy Composition


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Aluminum (Al), % 5.7 to 6.3
0
Carbon (C), % 0 to 0.080
0.2 to 0.6
Chromium (Cr), % 0
24 to 28
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
44.8 to 57.8
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0.25 to 0.75
0 to 0.5
Nickel (Ni), % 0
18 to 22
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.19
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 85.6 to 90.1
0
Zirconium (Zr), % 4.0 to 6.0
0
Residuals, % 0 to 0.4
0