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Zamak 7 vs. S40975 Stainless Steel

Zamak 7 belongs to the zinc alloys classification, while S40975 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
170
Elastic (Young's, Tensile) Modulus, GPa 86
190
Elongation at Break, % 13
22
Fatigue Strength, MPa 47
210
Poisson's Ratio 0.25
0.28
Shear Modulus, GPa 33
75
Shear Strength, MPa 210
290
Tensile Strength: Ultimate (UTS), MPa 280
460
Tensile Strength: Yield (Proof), MPa 250
310

Thermal Properties

Latent Heat of Fusion, J/g 120
270
Maximum Temperature: Mechanical, °C 95
710
Melting Completion (Liquidus), °C 390
1450
Melting Onset (Solidus), °C 380
1400
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 110
26
Thermal Expansion, µm/m-K 27
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 38
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
6.5
Density, g/cm3 6.4
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.0
Embodied Energy, MJ/kg 57
28
Embodied Water, L/kg 380
95

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
93
Resilience: Unit (Modulus of Resilience), kJ/m3 370
250
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 12
17
Strength to Weight: Bending, points 15
17
Thermal Diffusivity, mm2/s 43
7.0
Thermal Shock Resistance, points 8.6
17

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.075
84.4 to 89
Lead (Pb), % 0 to 0.0030
0
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0.0050 to 0.020
0.5 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.0010
0
Titanium (Ti), % 0
0 to 0.75
Zinc (Zn), % 95.3 to 96.5
0