ASTM A302 Alloy Steel vs. ZA-8
ASTM A302 alloy steel belongs to the iron alloys classification, while ZA-8 belongs to the zinc alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is ZA-8.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 87 to 100 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 85 to 86 |
| Elongation at Break, % | 20 to 23 | |
| 1.3 to 8.0 |
| Fatigue Strength, MPa | 250 to 280 | |
| 51 to 100 |
| Poisson's Ratio | 0.29 | |
| 0.26 |
| Shear Modulus, GPa | 73 | |
| 34 |
| Shear Strength, MPa | 370 to 390 | |
| 240 to 280 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 210 to 370 |
| Tensile Strength: Yield (Proof), MPa | 350 to 390 | |
| 210 to 290 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 110 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 100 |
| Melting Completion (Liquidus), °C | 1460 | |
| 400 |
| Melting Onset (Solidus), °C | 1420 | |
| 380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 440 |
| Thermal Conductivity, W/m-K | 39 to 51 | |
| 120 |
| Thermal Expansion, µm/m-K | 13 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 to 7.4 | |
| 28 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 to 8.4 | |
| 40 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 to 3.0 | |
| 11 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 6.3 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 3.3 |
| Embodied Energy, MJ/kg | 20 to 21 | |
| 62 |
| Embodied Water, L/kg | 48 to 50 | |
| 420 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 2.8 to 28 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 410 | |
| 260 to 490 |
| Stiffness to Weight: Axial, points | 13 | |
| 7.5 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 9.3 to 17 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 12 to 18 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 42 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 7.6 to 13 |