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ASTM A372 Grade K Steel vs. Zamak 7

ASTM A372 grade K steel belongs to the iron alloys classification, while Zamak 7 belongs to the zinc alloys. There are 31 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 ASTM A372 grade K steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
80
Elastic (Young's, Tensile) Modulus, GPa 190
86
Elongation at Break, % 23
13
Fatigue Strength, MPa 440
47
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 73
33
Shear Strength, MPa 490
210
Tensile Strength: Ultimate (UTS), MPa 780
280
Tensile Strength: Yield (Proof), MPa 620
250

Thermal Properties

Latent Heat of Fusion, J/g 250
120
Maximum Temperature: Mechanical, °C 440
95
Melting Completion (Liquidus), °C 1460
390
Melting Onset (Solidus), °C 1420
380
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 48
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
38

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
11
Density, g/cm3 7.9
6.4
Embodied Carbon, kg CO2/kg material 1.8
3.0
Embodied Energy, MJ/kg 24
57
Embodied Water, L/kg 57
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
36
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
370
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 27
12
Strength to Weight: Bending, points 24
15
Thermal Diffusivity, mm2/s 13
43
Thermal Shock Resistance, points 23
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0 to 0.18
0
Chromium (Cr), % 1.0 to 1.8
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.4 to 96.6
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0.1 to 0.4
0
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 2.0 to 3.3
0.0050 to 0.020
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 0
95.3 to 96.5