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Zamak 7 vs. ASTM A732 Cast Steel

Zamak 7 belongs to the zinc alloys classification, while ASTM A732 cast steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
140 to 440
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
4.0 to 25
Fatigue Strength, MPa 47
230 to 750
Poisson's Ratio 0.25
0.29
Shear Modulus, GPa 33
72 to 73
Tensile Strength: Ultimate (UTS), MPa 280
460 to 1470
Tensile Strength: Yield (Proof), MPa 250
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 120
250 to 260
Maximum Temperature: Mechanical, °C 95
400 to 430
Melting Completion (Liquidus), °C 390
1440 to 1460
Melting Onset (Solidus), °C 380
1400 to 1420
Specific Heat Capacity, J/kg-K 410
470 to 480
Thermal Conductivity, W/m-K 110
39 to 50
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 38
8.2 to 8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.0 to 3.8
Density, g/cm3 6.4
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 3.0
1.4 to 1.7
Embodied Energy, MJ/kg 57
19 to 24
Embodied Water, L/kg 380
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 370
260 to 4770
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 12
16 to 52
Strength to Weight: Bending, points 15
17 to 37
Thermal Diffusivity, mm2/s 43
10 to 14
Thermal Shock Resistance, points 8.6
14 to 43