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ACI-ASTM CN3MN Steel vs. Grade C-3 Titanium

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while grade C-3 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 ACI-ASTM CN3MN steel and the bottom bar is grade C-3 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
200
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 39
13
Fatigue Strength, MPa 250
260
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 80
40
Tensile Strength: Ultimate (UTS), MPa 620
500
Tensile Strength: Yield (Proof), MPa 300
430

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1410
1610
Specific Heat Capacity, J/kg-K 460
540
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 16
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
37
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 6.2
31
Embodied Energy, MJ/kg 84
510
Embodied Water, L/kg 200
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
65
Resilience: Unit (Modulus of Resilience), kJ/m3 210
880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 21
31
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 3.4
8.5
Thermal Shock Resistance, points 14
39

Alloy Composition


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Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 41.4 to 50.3
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
0 to 0.050
Nitrogen (N), % 0.18 to 0.26
0
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
98.8 to 100
Residuals, % 0
0 to 0.4