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C66900 Brass vs. ASTM B628 Ag-Cu

C66900 brass belongs to the copper alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C66900 brass and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
83
Elongation at Break, % 1.1 to 26
1.1 to 17
Poisson's Ratio 0.32
0.36
Shear Modulus, GPa 45
31
Shear Strength, MPa 290 to 440
210 to 430
Tensile Strength: Ultimate (UTS), MPa 460 to 770
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 190
140
Melting Completion (Liquidus), °C 860
780
Melting Onset (Solidus), °C 850
780
Specific Heat Capacity, J/kg-K 400
280
Thermal Expansion, µm/m-K 20
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
84
Electrical Conductivity: Equal Weight (Specific), % IACS 3.8
75

Otherwise Unclassified Properties

Density, g/cm3 8.2
10

Common Calculations

Stiffness to Weight: Axial, points 8.1
4.6
Stiffness to Weight: Bending, points 20
14
Strength to Weight: Axial, points 15 to 26
9.5 to 21
Strength to Weight: Bending, points 16 to 23
11 to 18
Thermal Shock Resistance, points 14 to 23
16 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 62.5 to 64.5
26.6 to 29
Iron (Fe), % 0 to 0.25
0 to 0.050
Lead (Pb), % 0 to 0.050
0 to 0.030
Manganese (Mn), % 11.5 to 12.5
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 0
71 to 73
Zinc (Zn), % 22.5 to 26
0 to 0.060
Residuals, % 0
0 to 0.21