ASTM A387 Grade 9 Steel vs. EN 1.7710 Steel
Both ASTM A387 grade 9 steel and EN 1.7710 steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 9 steel and the bottom bar is EN 1.7710 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 280 to 320 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 21 | |
| 6.8 to 11 |
| Fatigue Strength, MPa | 160 to 240 | |
| 500 to 620 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 600 | |
| 930 to 1070 |
| Tensile Strength: Yield (Proof), MPa | 230 to 350 | |
| 800 to 1060 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 440 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1410 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 26 | |
| 41 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 9.0 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 3.5 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.1 | |
| 2.2 |
| Embodied Energy, MJ/kg | 28 | |
| 30 |
| Embodied Water, L/kg | 87 | |
| 57 |
Common Calculations
| PREN (Pitting Resistance) | 12 | |
| 4.5 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 110 | |
| 73 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 310 | |
| 1680 to 2970 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 33 to 38 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 27 to 30 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 11 |
| Thermal Shock Resistance, points | 14 to 17 | |
| 27 to 31 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0.12 to 0.18 |
| Chromium (Cr), % | 8.0 to 10 | |
| 1.3 to 1.8 |
| Iron (Fe), % | 87.1 to 90.8 | |
| 95.1 to 97 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0.8 to 1.0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 0.040 | |
| 0.15 to 0.25 |