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ACI-ASTM CN3M Steel vs. Grade 34 Titanium

ACI-ASTM CN3M steel belongs to the iron alloys classification, while grade 34 titanium 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 CN3M steel and the bottom bar is grade 34 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
20
Fatigue Strength, MPa 150
310
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 80
41
Tensile Strength: Ultimate (UTS), MPa 500
510
Tensile Strength: Yield (Proof), MPa 190
450

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 16
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
55
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 5.9
33
Embodied Energy, MJ/kg 80
530
Embodied Water, L/kg 200
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 89
960
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 17
31
Strength to Weight: Bending, points 17
31
Thermal Diffusivity, mm2/s 3.4
8.4
Thermal Shock Resistance, points 11
39

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 20 to 22
0.1 to 0.2
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 42.4 to 52.5
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
0.35 to 0.55
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.35
Palladium (Pd), % 0
0.010 to 0.020
Phosphorus (P), % 0 to 0.030
0
Ruthenium (Ru), % 0
0.020 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98 to 99.52
Residuals, % 0
0 to 0.4