ASTM A387 Grade 9 Steel vs. EN 1.4378 Stainless Steel
Both ASTM A387 grade 9 steel and EN 1.4378 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 28 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 A387 grade 9 steel and the bottom bar is EN 1.4378 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 190 to 340 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 20 to 21 | |
| 14 to 34 |
| Fatigue Strength, MPa | 160 to 240 | |
| 340 to 550 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Shear Strength, MPa | 310 to 380 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 600 | |
| 760 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 230 to 350 | |
| 430 to 970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 910 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1390 |
| Melting Onset (Solidus), °C | 1410 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 12 |
| Density, g/cm3 | 7.8 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 2.1 | |
| 2.7 |
| Embodied Energy, MJ/kg | 28 | |
| 39 |
| Embodied Water, L/kg | 87 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 12 | |
| 23 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 110 | |
| 150 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 310 | |
| 470 to 2370 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 24 to 31 |
| Thermal Shock Resistance, points | 14 to 17 | |
| 16 to 23 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.080 |
| Chromium (Cr), % | 8.0 to 10 | |
| 17 to 19 |
| Iron (Fe), % | 87.1 to 90.8 | |
| 61.2 to 69 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 11.5 to 14.5 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 2.3 to 3.7 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 0.040 | |
| 0 |