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ASTM Grade HF Steel vs. Grade C-6 Titanium

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
290
Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 29
9.0
Fatigue Strength, MPa 200
460
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Tensile Strength: Ultimate (UTS), MPa 550
890
Tensile Strength: Yield (Proof), MPa 270
830

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1000
310
Melting Completion (Liquidus), °C 1410
1580
Melting Onset (Solidus), °C 1370
1530
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 16
7.8
Thermal Expansion, µm/m-K 16
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
36
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.2
30
Embodied Energy, MJ/kg 46
480
Embodied Water, L/kg 150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
78
Resilience: Unit (Modulus of Resilience), kJ/m3 180
3300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 20
55
Strength to Weight: Bending, points 19
46
Thermal Diffusivity, mm2/s 4.2
3.2
Thermal Shock Resistance, points 12
63

Alloy Composition


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Aluminum (Al), % 0
4.0 to 6.0
Carbon (C), % 0.2 to 0.4
0 to 0.1
Chromium (Cr), % 18 to 23
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 60 to 73.8
0 to 0.5
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 12
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
2.0 to 3.0
Titanium (Ti), % 0
89.7 to 94
Residuals, % 0
0 to 0.4