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R56401 Titanium vs. ASTM A387 Grade 5 Steel

R56401 titanium belongs to the titanium alloys classification, while ASTM A387 grade 5 steel belongs to the iron 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 R56401 titanium and the bottom bar is ASTM A387 grade 5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.1
20 to 21
Fatigue Strength, MPa 480
160 to 240
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
74
Shear Strength, MPa 560
310 to 380
Tensile Strength: Ultimate (UTS), MPa 940
500 to 600
Tensile Strength: Yield (Proof), MPa 850
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Maximum Temperature: Mechanical, °C 340
510
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
40
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
9.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
4.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 38
1.7
Embodied Energy, MJ/kg 610
23
Embodied Water, L/kg 200
69

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 3440
140 to 320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 59
18 to 21
Strength to Weight: Bending, points 48
18 to 20
Thermal Diffusivity, mm2/s 2.9
11
Thermal Shock Resistance, points 67
14 to 17

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 0
4.0 to 6.0
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
92.1 to 95.3
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.45 to 0.65
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.13
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 88.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0