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Grade 21 Titanium vs. C66900 Brass

Grade 21 titanium belongs to the titanium alloys classification, while C66900 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 21 titanium and the bottom bar is C66900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
120
Elongation at Break, % 9.0 to 17
1.1 to 26
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 51
45
Shear Strength, MPa 550 to 790
290 to 440
Tensile Strength: Ultimate (UTS), MPa 890 to 1340
460 to 770
Tensile Strength: Yield (Proof), MPa 870 to 1170
330 to 760

Thermal Properties

Latent Heat of Fusion, J/g 410
190
Maximum Temperature: Mechanical, °C 310
150
Melting Completion (Liquidus), °C 1740
860
Melting Onset (Solidus), °C 1690
850
Specific Heat Capacity, J/kg-K 500
400
Thermal Expansion, µm/m-K 7.1
20

Otherwise Unclassified Properties

Base Metal Price, % relative 60
23
Density, g/cm3 5.4
8.2
Embodied Carbon, kg CO2/kg material 32
2.8
Embodied Energy, MJ/kg 490
46
Embodied Water, L/kg 180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 180
4.6 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 2760 to 5010
460 to 2450
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 32
20
Strength to Weight: Axial, points 46 to 69
15 to 26
Strength to Weight: Bending, points 38 to 50
16 to 23
Thermal Shock Resistance, points 66 to 100
14 to 23

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.050
0
Copper (Cu), % 0
62.5 to 64.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
11.5 to 12.5
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
22.5 to 26
Residuals, % 0
0 to 0.2

Comparable Variants