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S31730 Stainless Steel vs. Zamak 3

S31730 stainless steel belongs to the iron alloys classification, while Zamak 3 belongs to the zinc alloys. There are 28 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
83
Elastic (Young's, Tensile) Modulus, GPa 200
86
Elongation at Break, % 40
11
Fatigue Strength, MPa 170
48
Poisson's Ratio 0.28
0.25
Rockwell B Hardness 78
50
Shear Modulus, GPa 77
33
Shear Strength, MPa 370
210
Tensile Strength: Ultimate (UTS), MPa 540
280
Tensile Strength: Yield (Proof), MPa 200
210

Thermal Properties

Latent Heat of Fusion, J/g 290
120
Maximum Temperature: Mechanical, °C 990
95
Melting Completion (Liquidus), °C 1430
390
Melting Onset (Solidus), °C 1390
380
Specific Heat Capacity, J/kg-K 470
410
Thermal Expansion, µm/m-K 16
27

Otherwise Unclassified Properties

Base Metal Price, % relative 24
11
Density, g/cm3 8.0
6.4
Embodied Carbon, kg CO2/kg material 4.6
3.0
Embodied Energy, MJ/kg 63
57
Embodied Water, L/kg 180
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
28
Resilience: Unit (Modulus of Resilience), kJ/m3 99
260
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 19
12
Strength to Weight: Bending, points 18
15
Thermal Shock Resistance, points 12
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 4.0 to 5.0
0 to 0.25
Iron (Fe), % 52.4 to 61
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
0 to 0.020
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.030
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
95.3 to 96.5