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C21000 Brass vs. AWS BAg-21

C21000 brass belongs to the copper alloys classification, while AWS BAg-21 belongs to the otherwise unclassified metals. 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 (16, in this case) are not shown.

For each property being compared, the top bar is C21000 brass and the bottom bar is AWS BAg-21.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
85
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 43
31
Tensile Strength: Ultimate (UTS), MPa 240 to 450
150

Thermal Properties

Latent Heat of Fusion, J/g 200
140
Melting Completion (Liquidus), °C 1070
800
Melting Onset (Solidus), °C 1050
690
Specific Heat Capacity, J/kg-K 390
280
Thermal Expansion, µm/m-K 18
19

Otherwise Unclassified Properties

Density, g/cm3 8.8
9.8
Embodied Energy, MJ/kg 42
970

Common Calculations

Stiffness to Weight: Axial, points 7.2
4.8
Stiffness to Weight: Bending, points 18
15
Strength to Weight: Axial, points 7.4 to 14
4.2
Strength to Weight: Bending, points 9.6 to 15
6.4
Thermal Shock Resistance, points 8.1 to 15
6.6

Alloy Composition

Copper (Cu), % 94 to 96
27.5 to 29.5
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0
2.0 to 3.0
Silver (Ag), % 0
62 to 64
Tin (Sn), % 0
5.0 to 7.0
Zinc (Zn), % 3.7 to 6.0
0
Residuals, % 0
0 to 0.15