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C37000 Muntz Metal vs. ASTM B628 Ag-Cu

C37000 Muntz Metal 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 (11, in this case) are not shown.

For each property being compared, the top bar is C37000 Muntz Metal and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
83
Elongation at Break, % 40
1.1 to 17
Poisson's Ratio 0.31
0.36
Shear Modulus, GPa 39
31
Shear Strength, MPa 270
210 to 430
Tensile Strength: Ultimate (UTS), MPa 400
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 170
140
Melting Completion (Liquidus), °C 900
780
Melting Onset (Solidus), °C 890
780
Specific Heat Capacity, J/kg-K 380
280
Thermal Expansion, µm/m-K 21
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
84
Electrical Conductivity: Equal Weight (Specific), % IACS 30
75

Otherwise Unclassified Properties

Density, g/cm3 8.1
10

Common Calculations

Stiffness to Weight: Axial, points 7.2
4.6
Stiffness to Weight: Bending, points 19
14
Strength to Weight: Axial, points 14
9.5 to 21
Strength to Weight: Bending, points 15
11 to 18
Thermal Shock Resistance, points 13
16 to 34

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 59 to 62
26.6 to 29
Iron (Fe), % 0 to 0.15
0 to 0.050
Lead (Pb), % 0.8 to 1.5
0 to 0.030
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.030
Silver (Ag), % 0
71 to 73
Zinc (Zn), % 36 to 40.2
0 to 0.060
Residuals, % 0
0 to 0.21