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R56401 Titanium vs. ASTM B685 Alloy

R56401 titanium belongs to the titanium alloys classification, while ASTM B685 alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R56401 titanium and the bottom bar is ASTM B685 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.32
0.37
Shear Modulus, GPa 40
43
Tensile Strength: Ultimate (UTS), MPa 940
660 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 410
180
Melting Completion (Liquidus), °C 1610
1230
Melting Onset (Solidus), °C 1560
1200
Specific Heat Capacity, J/kg-K 560
300
Thermal Expansion, µm/m-K 9.6
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
5.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
4.1

Otherwise Unclassified Properties

Density, g/cm3 4.5
11

Common Calculations

Stiffness to Weight: Axial, points 13
6.1
Stiffness to Weight: Bending, points 35
15
Strength to Weight: Axial, points 59
17 to 27
Strength to Weight: Bending, points 48
16 to 21
Thermal Shock Resistance, points 67
28 to 46

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.080
0
Copper (Cu), % 0
39.5 to 40.5
Hydrogen (H), % 0 to 0.012
0
Iron (Fe), % 0 to 0.25
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.13
0
Palladium (Pd), % 0
59 to 60.5
Silver (Ag), % 0
0 to 0.1
Titanium (Ti), % 88.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.2