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Grade 21 Titanium vs. C27400 Brass

Grade 21 titanium belongs to the titanium alloys classification, while C27400 brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 21 titanium and the bottom bar is C27400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
110
Poisson's Ratio 0.32
0.31
Shear Modulus, GPa 51
40
Tensile Strength: Ultimate (UTS), MPa 890 to 1340
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 410
170
Maximum Temperature: Mechanical, °C 310
120
Melting Completion (Liquidus), °C 1740
920
Melting Onset (Solidus), °C 1690
870
Specific Heat Capacity, J/kg-K 500
390
Thermal Conductivity, W/m-K 7.5
120
Thermal Expansion, µm/m-K 7.1
21

Otherwise Unclassified Properties

Base Metal Price, % relative 60
23
Density, g/cm3 5.4
8.0
Embodied Carbon, kg CO2/kg material 32
2.7
Embodied Energy, MJ/kg 490
45
Embodied Water, L/kg 180
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 32
20
Strength to Weight: Axial, points 46 to 69
13 to 23
Strength to Weight: Bending, points 38 to 50
14 to 21
Thermal Diffusivity, mm2/s 2.8
37
Thermal Shock Resistance, points 66 to 100
12 to 22

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.050
0
Copper (Cu), % 0
61 to 64
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 14 to 16
0
Niobium (Nb), % 2.2 to 3.2
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.17
0
Silicon (Si), % 0.15 to 0.25
0
Titanium (Ti), % 76 to 81.2
0
Zinc (Zn), % 0
35.6 to 39
Residuals, % 0
0 to 0.3

Comparable Variants