ASTM A387 Grade 12 Steel vs. EN 1.4401 Stainless Steel
Both ASTM A387 grade 12 steel and EN 1.4401 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 32 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 12 steel and the bottom bar is EN 1.4401 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 160 | |
| 190 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 25 | |
| 14 to 40 |
| Fatigue Strength, MPa | 190 to 230 | |
| 200 to 320 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 78 |
| Shear Strength, MPa | 300 to 330 | |
| 410 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 470 to 520 | |
| 600 to 900 |
| Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
| 230 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 950 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 44 | |
| 15 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.8 | |
| 19 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 3.8 |
| Embodied Energy, MJ/kg | 21 | |
| 52 |
| Embodied Water, L/kg | 51 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 2.7 | |
| 26 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 110 | |
| 110 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 250 | |
| 130 to 800 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 16 to 18 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 20 to 26 |
| Thermal Diffusivity, mm2/s | 12 | |
| 4.0 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.17 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 16.5 to 18.5 |
| Iron (Fe), % | 97 to 98.2 | |
| 62.8 to 71.5 |
| Manganese (Mn), % | 0.4 to 0.65 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.45 to 0.6 | |
| 2.0 to 2.5 |
| Nickel (Ni), % | 0 | |
| 10 to 13 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.045 |
| Silicon (Si), % | 0.15 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.015 |