AWS BAg-20 vs. Zamak 2

AWS BAg-20 belongs to the otherwise unclassified metals classification, while Zamak 2 belongs to the zinc alloys. They have a modest 35% 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 (19, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-20 and the bottom bar is Zamak 2.

AWS BAg-20 (P07301) Filler Metal Zamak 2 (ASTM AC43A, Z35541, Mazak 2) Zinc Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		93
Elastic (Young's, Tensile) Modulus, GPa		87

Poisson's Ratio		0.32
Poisson's Ratio		0.26

Shear Modulus, GPa		35
Shear Modulus, GPa		33

Tensile Strength: Ultimate (UTS), MPa		160
Tensile Strength: Ultimate (UTS), MPa		360

Thermal Properties

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		130

Melting Completion (Liquidus), °C		770
Melting Completion (Liquidus), °C		390

Melting Onset (Solidus), °C		680
Melting Onset (Solidus), °C		380

Specific Heat Capacity, J/kg-K		340
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		28

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		6.5

Embodied Carbon, kg CO₂/kg material		30
Embodied Carbon, kg CO₂/kg material		3.0

Embodied Energy, MJ/kg		480
Embodied Energy, MJ/kg		57

Common Calculations

Stiffness to Weight: Axial, points		6.0
Stiffness to Weight: Axial, points		7.5

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		5.1
Strength to Weight: Axial, points		15

Strength to Weight: Bending, points		7.6
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		5.9
Thermal Shock Resistance, points		11

Alloy Composition

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Aluminum (Al), %		0
Aluminum (Al), %		3.5 to 4.3

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.0050

Copper (Cu), %		37 to 39
Copper (Cu), %		2.5 to 3.3

Iron (Fe), %		0
Iron (Fe), %		0 to 0.1

Lead (Pb), %		0
Lead (Pb), %		0 to 0.0050

Magnesium (Mg), %		0
Magnesium (Mg), %		0.020 to 0.060

Nickel (Ni), %		0
Nickel (Ni), %		0 to 0.020

Silicon (Si), %		0
Silicon (Si), %		0 to 0.030

Silver (Ag), %		29 to 31
Silver (Ag), %		0

Tin (Sn), %		0
Tin (Sn), %		0 to 0.0030

Zinc (Zn), %		30 to 34
Zinc (Zn), %		92.2 to 94

Residuals, %		0 to 0.15
Residuals, %		0