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ACI-ASTM CN7M Steel vs. Zamak 2

ACI-ASTM CN7M steel belongs to the iron alloys classification, while Zamak 2 belongs to the zinc alloys. There are 30 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7M steel and the bottom bar is Zamak 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
100
Elastic (Young's, Tensile) Modulus, GPa 200
87
Elongation at Break, % 44
6.0
Fatigue Strength, MPa 190
59
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 77
33
Tensile Strength: Ultimate (UTS), MPa 480
360
Tensile Strength: Yield (Proof), MPa 200
270

Thermal Properties

Latent Heat of Fusion, J/g 310
130
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1410
390
Melting Onset (Solidus), °C 1450
380
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 21
110
Thermal Expansion, µm/m-K 15
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
25
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
35

Otherwise Unclassified Properties

Base Metal Price, % relative 32
12
Density, g/cm3 8.1
6.5
Embodied Carbon, kg CO2/kg material 5.6
3.0
Embodied Energy, MJ/kg 78
57
Embodied Water, L/kg 210
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
20
Resilience: Unit (Modulus of Resilience), kJ/m3 110
420
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17
15
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 5.6
41
Thermal Shock Resistance, points 12
11

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 3.0 to 4.0
2.5 to 3.3
Iron (Fe), % 37.4 to 48.5
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0 to 0.020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.030
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
92.2 to 94