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ACI-ASTM CF8C Steel vs. Titanium 6-6-2

ACI-ASTM CF8C steel belongs to the iron alloys classification, while titanium 6-6-2 belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF8C steel and the bottom bar is titanium 6-6-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 40
6.7 to 9.0
Fatigue Strength, MPa 220
590 to 670
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
44
Tensile Strength: Ultimate (UTS), MPa 530
1140 to 1370
Tensile Strength: Yield (Proof), MPa 260
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 980
310
Melting Completion (Liquidus), °C 1420
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 16
5.5
Thermal Expansion, µm/m-K 17
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 19
40
Density, g/cm3 7.8
4.8
Embodied Carbon, kg CO2/kg material 3.7
29
Embodied Energy, MJ/kg 53
470
Embodied Water, L/kg 150
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
89 to 99
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 19
66 to 79
Strength to Weight: Bending, points 19
50 to 57
Thermal Diffusivity, mm2/s 4.3
2.1
Thermal Shock Resistance, points 11
75 to 90

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 61.8 to 73
0.35 to 1.0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
5.0 to 6.0
Nickel (Ni), % 9.0 to 12
0
Niobium (Nb), % 0 to 1.0
0
Nitrogen (N), % 0
0 to 0.040
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
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Residuals, % 0
0 to 0.4