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C68800 Brass vs. ASTM B817 Type II

C68800 brass belongs to the copper alloys classification, while ASTM B817 type II belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 2.0 to 36
3.0 to 13
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 41
40
Tensile Strength: Ultimate (UTS), MPa 570 to 890
900 to 960
Tensile Strength: Yield (Proof), MPa 390 to 790
780 to 900

Thermal Properties

Latent Heat of Fusion, J/g 190
400
Maximum Temperature: Mechanical, °C 160
350
Melting Completion (Liquidus), °C 960
1580
Melting Onset (Solidus), °C 950
1530
Specific Heat Capacity, J/kg-K 400
550
Thermal Expansion, µm/m-K 19
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 26
37
Density, g/cm3 8.2
4.6
Embodied Carbon, kg CO2/kg material 2.8
40
Embodied Energy, MJ/kg 48
650
Embodied Water, L/kg 350
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
26 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
2890 to 3890
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 19
34
Strength to Weight: Axial, points 19 to 30
55 to 58
Strength to Weight: Bending, points 19 to 25
45 to 47
Thermal Shock Resistance, points 19 to 30
62 to 66

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
5.0 to 6.0
Carbon (C), % 0
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.2
0.35 to 1.0
Lead (Pb), % 0 to 0.050
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Silicon (Si), % 0
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Zinc (Zn), % 21.3 to 24.1
0
Residuals, % 0
0 to 0.4