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SAE-AISI 4140 Steel vs. Zamak 3

SAE-AISI 4140 steel belongs to the iron alloys classification, while Zamak 3 belongs to the zinc alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4140 steel and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 310
83
Elastic (Young's, Tensile) Modulus, GPa 190
86
Elongation at Break, % 11 to 26
11
Fatigue Strength, MPa 360 to 650
48
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 73
33
Shear Strength, MPa 410 to 660
210
Tensile Strength: Ultimate (UTS), MPa 690 to 1080
280
Tensile Strength: Yield (Proof), MPa 590 to 990
210

Thermal Properties

Latent Heat of Fusion, J/g 250
120
Maximum Temperature: Mechanical, °C 420
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 43
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
38

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
11
Density, g/cm3 7.8
6.4
Embodied Carbon, kg CO2/kg material 1.5
3.0
Embodied Energy, MJ/kg 20
57
Embodied Water, L/kg 51
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 180
28
Resilience: Unit (Modulus of Resilience), kJ/m3 920 to 2590
260
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 25 to 38
12
Strength to Weight: Bending, points 22 to 30
15
Thermal Diffusivity, mm2/s 12
43
Thermal Shock Resistance, points 20 to 32
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 97.8
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.030
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
95.3 to 96.5