S21800 Stainless Steel vs. Zamak 7
S21800 stainless steel belongs to the iron alloys classification, while Zamak 7 belongs to the zinc alloys. There are 27 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is S21800 stainless steel and the bottom bar is Zamak 7.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 80 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 86 |
| Elongation at Break, % | 40 | |
| 13 |
| Fatigue Strength, MPa | 330 | |
| 47 |
| Poisson's Ratio | 0.28 | |
| 0.25 |
| Shear Modulus, GPa | 75 | |
| 33 |
| Shear Strength, MPa | 510 | |
| 210 |
| Tensile Strength: Ultimate (UTS), MPa | 740 | |
| 280 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 340 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 95 |
| Melting Completion (Liquidus), °C | 1360 | |
| 390 |
| Melting Onset (Solidus), °C | 1310 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 410 |
| Thermal Expansion, µm/m-K | 16 | |
| 27 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 11 |
| Density, g/cm3 | 7.5 | |
| 6.4 |
| Embodied Carbon, kg CO2/kg material | 3.1 | |
| 3.0 |
| Embodied Energy, MJ/kg | 45 | |
| 57 |
| Embodied Water, L/kg | 150 | |
| 380 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 250 | |
| 36 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 390 | |
| 370 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 26 | |
| 23 |
| Strength to Weight: Axial, points | 27 | |
| 12 |
| Strength to Weight: Bending, points | 24 | |
| 15 |
| Thermal Shock Resistance, points | 17 | |
| 8.6 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.5 to 4.3 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.0020 |
| Carbon (C), % | 0 to 0.1 | |
| 0 |
| Chromium (Cr), % | 16 to 18 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 59.1 to 65.4 | |
| 0 to 0.075 |
| Lead (Pb), % | 0 | |
| 0 to 0.0030 |
| Magnesium (Mg), % | 0 | |
| 0.0050 to 0.020 |
| Manganese (Mn), % | 7.0 to 9.0 | |
| 0 |
| Nickel (Ni), % | 8.0 to 9.0 | |
| 0.0050 to 0.020 |
| Nitrogen (N), % | 0.080 to 0.18 | |
| 0 |
| Phosphorus (P), % | 0 to 0.060 | |
| 0 |
| Silicon (Si), % | 3.5 to 4.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0 to 0.0010 |
| Zinc (Zn), % | 0 | |
| 95.3 to 96.5 |