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R56401 Titanium vs. ACI-ASTM CH20 Steel

R56401 titanium belongs to the titanium alloys classification, while ACI-ASTM CH20 steel belongs to the iron 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 R56401 titanium and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.1
38
Fatigue Strength, MPa 480
290
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 940
610
Tensile Strength: Yield (Proof), MPa 850
350

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 340
1100
Melting Completion (Liquidus), °C 1610
1410
Melting Onset (Solidus), °C 1560
1430
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
14
Thermal Expansion, µm/m-K 9.6
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
20
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 38
3.7
Embodied Energy, MJ/kg 610
53
Embodied Water, L/kg 200
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
200
Resilience: Unit (Modulus of Resilience), kJ/m3 3440
300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 59
22
Strength to Weight: Bending, points 48
21
Thermal Diffusivity, mm2/s 2.9
3.7
Thermal Shock Resistance, points 67
15

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 0
22 to 26
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
54.7 to 66
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
12 to 15
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 88.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0