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EN 1.4938 Stainless Steel vs. Zamak 7

EN 1.4938 stainless steel belongs to the iron alloys classification, while Zamak 7 belongs to the zinc alloys. There are 30 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 EN 1.4938 stainless steel and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
86
Elongation at Break, % 16 to 17
13
Fatigue Strength, MPa 390 to 520
47
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 76
33
Shear Strength, MPa 540 to 630
210
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
280
Tensile Strength: Yield (Proof), MPa 640 to 870
250

Thermal Properties

Latent Heat of Fusion, J/g 270
120
Maximum Temperature: Mechanical, °C 750
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 30
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 7.8
6.4
Embodied Carbon, kg CO2/kg material 3.3
3.0
Embodied Energy, MJ/kg 47
57
Embodied Water, L/kg 110
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
36
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
370
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 31 to 37
12
Strength to Weight: Bending, points 26 to 29
15
Thermal Diffusivity, mm2/s 8.1
43
Thermal Shock Resistance, points 30 to 35
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.080 to 0.15
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 80.5 to 84.8
0 to 0.075
Lead (Pb), % 0
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Manganese (Mn), % 0.4 to 0.9
0
Molybdenum (Mo), % 1.5 to 2.0
0
Nickel (Ni), % 2.0 to 3.0
0.0050 to 0.020
Nitrogen (N), % 0.020 to 0.040
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.0010
Vanadium (V), % 0.25 to 0.4
0
Zinc (Zn), % 0
95.3 to 96.5