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ASTM Grade HF Steel vs. Titanium 6-2-4-2

ASTM grade HF steel belongs to the iron alloys classification, while titanium 6-2-4-2 belongs to the titanium 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 ASTM grade HF steel and the bottom bar is titanium 6-2-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 29
8.6
Fatigue Strength, MPa 200
490
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 550
950
Tensile Strength: Yield (Proof), MPa 270
880

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1000
300
Melting Completion (Liquidus), °C 1410
1590
Melting Onset (Solidus), °C 1370
1540
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 16
6.9
Thermal Expansion, µm/m-K 16
9.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
0.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 17
42
Density, g/cm3 7.7
4.6
Embodied Carbon, kg CO2/kg material 3.2
32
Embodied Energy, MJ/kg 46
520
Embodied Water, L/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
79
Resilience: Unit (Modulus of Resilience), kJ/m3 180
3640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 20
57
Strength to Weight: Bending, points 19
46
Thermal Diffusivity, mm2/s 4.2
2.8
Thermal Shock Resistance, points 12
67

Alloy Composition


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Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0.2 to 0.4
0 to 0.050
Chromium (Cr), % 18 to 23
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 60 to 73.8
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
1.8 to 2.2
Nickel (Ni), % 8.0 to 12
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0.060 to 0.12
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
1.8 to 2.2
Titanium (Ti), % 0
83.7 to 87.2
Zirconium (Zr), % 0
3.6 to 4.4
Residuals, % 0
0 to 0.4