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ACI-ASTM CA15 Steel vs. R56401 Titanium

ACI-ASTM CA15 steel belongs to the iron alloys classification, while R56401 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA15 steel and the bottom bar is R56401 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21
9.1
Fatigue Strength, MPa 370
480
Poisson's Ratio 0.28
0.32
Reduction in Area, % 34
17
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 700
940
Tensile Strength: Yield (Proof), MPa 570
850

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 750
340
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1500
1560
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 25
7.1
Thermal Expansion, µm/m-K 10
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
36
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.0
38
Embodied Energy, MJ/kg 28
610
Embodied Water, L/kg 100
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
83
Resilience: Unit (Modulus of Resilience), kJ/m3 820
3440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 25
59
Strength to Weight: Bending, points 23
48
Thermal Diffusivity, mm2/s 6.7
2.9
Thermal Shock Resistance, points 26
67

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 11.5 to 14
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 81.8 to 88.5
0 to 0.25
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
88.5 to 91
Vanadium (V), % 0
3.5 to 4.5