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AWS BAg-21 vs. C28000 Muntz Metal

AWS BAg-21 belongs to the otherwise unclassified metals classification, while C28000 Muntz Metal belongs to the copper alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 16 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-21 and the bottom bar is C28000 Muntz Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
100
Poisson's Ratio 0.36
0.31
Shear Modulus, GPa 31
40
Tensile Strength: Ultimate (UTS), MPa 150
330 to 610

Thermal Properties

Latent Heat of Fusion, J/g 140
170
Melting Completion (Liquidus), °C 800
900
Melting Onset (Solidus), °C 690
900
Specific Heat Capacity, J/kg-K 280
390
Thermal Expansion, µm/m-K 19
21

Otherwise Unclassified Properties

Density, g/cm3 9.8
8.0
Embodied Energy, MJ/kg 970
46

Common Calculations

Stiffness to Weight: Axial, points 4.8
7.2
Stiffness to Weight: Bending, points 15
20
Strength to Weight: Axial, points 4.2
11 to 21
Strength to Weight: Bending, points 6.4
13 to 20
Thermal Shock Resistance, points 6.6
11 to 20

Alloy Composition

Copper (Cu), % 27.5 to 29.5
59 to 63
Iron (Fe), % 0
0 to 0.070
Lead (Pb), % 0
0 to 0.3
Nickel (Ni), % 2.0 to 3.0
0
Silver (Ag), % 62 to 64
0
Tin (Sn), % 5.0 to 7.0
0
Zinc (Zn), % 0
36.3 to 41
Residuals, % 0
0 to 0.3