ASTM A387 Grade 12 Steel vs. ASTM A302 Alloy Steel
Both ASTM A387 grade 12 steel and ASTM A302 alloy steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 160 | |
| 180 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 25 | |
| 20 to 23 |
| Fatigue Strength, MPa | 190 to 230 | |
| 250 to 280 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 300 to 330 | |
| 370 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 470 to 520 | |
| 590 to 620 |
| Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
| 350 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 410 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 44 | |
| 39 to 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.2 to 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.2 to 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.8 | |
| 2.4 to 3.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 1.5 to 1.6 |
| Embodied Energy, MJ/kg | 21 | |
| 20 to 21 |
| Embodied Water, L/kg | 51 | |
| 48 to 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 110 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 250 | |
| 330 to 410 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 16 to 18 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 12 | |
| 10 to 14 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 17 to 18 |