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CC751S Brass vs. Grade 21 Titanium

CC751S brass belongs to the copper alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is CC751S brass and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Elongation at Break, % 5.6
9.0 to 17
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 40
51
Tensile Strength: Ultimate (UTS), MPa 450
890 to 1340
Tensile Strength: Yield (Proof), MPa 320
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 190
410
Maximum Temperature: Mechanical, °C 130
310
Melting Completion (Liquidus), °C 850
1740
Melting Onset (Solidus), °C 810
1690
Specific Heat Capacity, J/kg-K 390
500
Thermal Conductivity, W/m-K 110
7.5
Thermal Expansion, µm/m-K 20
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 24
60
Density, g/cm3 8.1
5.4
Embodied Carbon, kg CO2/kg material 2.8
32
Embodied Energy, MJ/kg 46
490
Embodied Water, L/kg 330
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 480
2760 to 5010
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
32
Strength to Weight: Axial, points 15
46 to 69
Strength to Weight: Bending, points 16
38 to 50
Thermal Diffusivity, mm2/s 35
2.8
Thermal Shock Resistance, points 15
66 to 100

Alloy Composition

Aluminum (Al), % 0 to 0.1
2.5 to 3.5
Antimony (Sb), % 0 to 0.5
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 62.7 to 66
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0.25 to 0.5
0 to 0.4
Lead (Pb), % 0.8 to 2.2
0
Manganese (Mn), % 0 to 0.15
0
Molybdenum (Mo), % 0
14 to 16
Nickel (Ni), % 0 to 0.8
0
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Silicon (Si), % 0.65 to 1.1
0.15 to 0.25
Tin (Sn), % 0 to 0.8
0
Titanium (Ti), % 0
76 to 81.2
Zinc (Zn), % 27.9 to 35.6
0
Residuals, % 0
0 to 0.4