MakeItFrom.com
Menu (ESC)

ASTM B780 Alloy vs. Zamak 7

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while Zamak 7 belongs to the zinc alloys. There are 17 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
86
Elongation at Break, % 1.1 to 9.1
13
Poisson's Ratio 0.36
0.25
Shear Modulus, GPa 30
33
Shear Strength, MPa 200 to 340
210
Tensile Strength: Ultimate (UTS), MPa 330 to 590
280

Thermal Properties

Latent Heat of Fusion, J/g 140
120
Specific Heat Capacity, J/kg-K 270
410
Thermal Expansion, µm/m-K 18
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70 to 76
27
Electrical Conductivity: Equal Weight (Specific), % IACS 62 to 68
38

Otherwise Unclassified Properties

Density, g/cm3 10
6.4

Common Calculations

Stiffness to Weight: Axial, points 4.5
7.5
Stiffness to Weight: Bending, points 14
23
Strength to Weight: Axial, points 9.1 to 16
12
Strength to Weight: Bending, points 11 to 15
15
Thermal Shock Resistance, points 16 to 29
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0 to 0.050
0 to 0.0020
Copper (Cu), % 23.5 to 25.7
0 to 0.25
Iron (Fe), % 0 to 0.050
0 to 0.075
Lead (Pb), % 0 to 0.030
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Nickel (Ni), % 0.35 to 0.65
0.0050 to 0.020
Silver (Ag), % 74 to 76
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 0 to 0.060
95.3 to 96.5