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ACI-ASTM CA6NM Steel vs. Titanium 6-6-2

ACI-ASTM CA6NM steel belongs to the iron alloys classification, while titanium 6-6-2 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 ACI-ASTM CA6NM 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, % 17
6.7 to 9.0
Fatigue Strength, MPa 380
590 to 670
Poisson's Ratio 0.28
0.32
Reduction in Area, % 40
17 to 23
Shear Modulus, GPa 76
44
Tensile Strength: Ultimate (UTS), MPa 850
1140 to 1370
Tensile Strength: Yield (Proof), MPa 620
1040 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 770
310
Melting Completion (Liquidus), °C 1450
1610
Melting Onset (Solidus), °C 1400
1560
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 25
5.5
Thermal Expansion, µm/m-K 10
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
1.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
40
Density, g/cm3 7.8
4.8
Embodied Carbon, kg CO2/kg material 2.5
29
Embodied Energy, MJ/kg 34
470
Embodied Water, L/kg 110
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
89 to 99
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 30
66 to 79
Strength to Weight: Bending, points 26
50 to 57
Thermal Diffusivity, mm2/s 6.7
2.1
Thermal Shock Resistance, points 31
75 to 90

Alloy Composition

Aluminum (Al), % 0
5.0 to 6.0
Carbon (C), % 0 to 0.060
0 to 0.050
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 78.4 to 84.6
0.35 to 1.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.4 to 1.0
5.0 to 6.0
Nickel (Ni), % 3.5 to 4.5
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 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.8 to 87.8
Residuals, % 0
0 to 0.4