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ASTM B628 Ag-Cu vs. C44300 Brass

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while C44300 brass belongs to the copper alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 ASTM B628 Ag-Cu and the bottom bar is C44300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
110
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 31
41
Tensile Strength: Ultimate (UTS), MPa 350 to 760
350

Thermal Properties

Latent Heat of Fusion, J/g 140
180
Melting Completion (Liquidus), °C 780
940
Melting Onset (Solidus), °C 780
900
Specific Heat Capacity, J/kg-K 280
380
Thermal Expansion, µm/m-K 19
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
25
Electrical Conductivity: Equal Weight (Specific), % IACS 75
27

Otherwise Unclassified Properties

Density, g/cm3 10
8.3

Common Calculations

Stiffness to Weight: Axial, points 4.6
7.2
Stiffness to Weight: Bending, points 14
19
Strength to Weight: Axial, points 9.5 to 21
12
Strength to Weight: Bending, points 11 to 18
13
Thermal Shock Resistance, points 16 to 34
12

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0
Arsenic (As), % 0
0.020 to 0.060
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 26.6 to 29
70 to 73
Iron (Fe), % 0 to 0.050
0 to 0.060
Lead (Pb), % 0 to 0.030
0 to 0.070
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 71 to 73
0
Tin (Sn), % 0
0.9 to 1.2
Zinc (Zn), % 0 to 0.060
25.2 to 29.1
Residuals, % 0 to 0.21
0 to 0.4