AWS E2209 vs. ASTM A387 Grade 12 Steel
Both AWS E2209 and ASTM A387 grade 12 steel are iron alloys. They have 65% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is AWS E2209 and the bottom bar is ASTM A387 grade 12 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 23 | |
| 25 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 | |
| 470 to 520 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 250 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1470 |
| Melting Onset (Solidus), °C | 1390 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 16 | |
| 44 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 20 | |
| 2.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.0 | |
| 1.6 |
| Embodied Energy, MJ/kg | 55 | |
| 21 |
| Embodied Water, L/kg | 170 | |
| 51 |
Common Calculations
| PREN (Pitting Resistance) | 35 | |
| 2.7 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 27 | |
| 16 to 18 |
| Strength to Weight: Bending, points | 24 | |
| 17 to 18 |
| Thermal Diffusivity, mm2/s | 4.3 | |
| 12 |
| Thermal Shock Resistance, points | 20 | |
| 14 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.040 | |
| 0.050 to 0.17 |
| Chromium (Cr), % | 21.5 to 23.5 | |
| 0.8 to 1.2 |
| Copper (Cu), % | 0 to 0.75 | |
| 0 |
| Iron (Fe), % | 58.4 to 66.9 | |
| 97 to 98.2 |
| Manganese (Mn), % | 0.5 to 2.0 | |
| 0.4 to 0.65 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 0.45 to 0.6 |
| Nickel (Ni), % | 8.5 to 10.5 | |
| 0 |
| Nitrogen (N), % | 0.080 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |