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SAE-AISI 4340M Steel vs. Zamak 3

SAE-AISI 4340M steel belongs to the iron alloys classification, while Zamak 3 belongs to the zinc alloys. There are 32 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 SAE-AISI 4340M steel and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
83
Elastic (Young's, Tensile) Modulus, GPa 190
86
Elongation at Break, % 6.0
11
Fatigue Strength, MPa 690
48
Fracture Toughness, MPa-m1/2 60
12
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 72
33
Shear Strength, MPa 1360
210
Tensile Strength: Ultimate (UTS), MPa 2340
280
Tensile Strength: Yield (Proof), MPa 1240
210

Thermal Properties

Latent Heat of Fusion, J/g 280
120
Maximum Temperature: Mechanical, °C 430
95
Melting Completion (Liquidus), °C 1440
390
Melting Onset (Solidus), °C 1400
380
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 38
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
38

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
11
Density, g/cm3 7.8
6.4
Embodied Carbon, kg CO2/kg material 1.9
3.0
Embodied Energy, MJ/kg 26
57
Embodied Water, L/kg 55
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
28
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
260
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 84
12
Strength to Weight: Bending, points 51
15
Thermal Diffusivity, mm2/s 10
43
Thermal Shock Resistance, points 70
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), % 0.7 to 1.0
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 93.3 to 94.8
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0.65 to 0.9
0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
0 to 0.020
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0 to 0.030
Sulfur (S), % 0 to 0.012
0
Tin (Sn), % 0
0 to 0.0030
Vanadium (V), % 0.050 to 0.1
0
Zinc (Zn), % 0
95.3 to 96.5