EN 1.4404 Stainless Steel vs. ASTM A387 Grade 2 Steel
Both EN 1.4404 stainless steel and ASTM A387 grade 2 steel are iron alloys. They have 69% 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 EN 1.4404 stainless steel and the bottom bar is ASTM A387 grade 2 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 270 | |
| 140 to 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 14 to 43 | |
| 25 |
| Fatigue Strength, MPa | 220 to 320 | |
| 190 to 250 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 73 |
| Shear Strength, MPa | 420 to 550 | |
| 300 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 900 | |
| 470 to 550 |
| Tensile Strength: Yield (Proof), MPa | 240 to 570 | |
| 260 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 950 | |
| 420 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1470 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 45 |
| Thermal Expansion, µm/m-K | 16 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.3 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.6 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 2.6 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.8 | |
| 1.6 |
| Embodied Energy, MJ/kg | 52 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 50 |
Common Calculations
| PREN (Pitting Resistance) | 26 | |
| 2.4 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 210 | |
| 98 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 800 | |
| 180 to 320 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 32 | |
| 16 to 20 |
| Strength to Weight: Bending, points | 20 to 26 | |
| 17 to 19 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 12 |
| Thermal Shock Resistance, points | 13 to 20 | |
| 14 to 16 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0.050 to 0.21 |
| Chromium (Cr), % | 16.5 to 18.5 | |
| 0.5 to 0.8 |
| Iron (Fe), % | 62.8 to 71.5 | |
| 97.1 to 98.3 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.55 to 0.8 |
| Molybdenum (Mo), % | 2.0 to 2.5 | |
| 0.45 to 0.6 |
| Nickel (Ni), % | 10 to 13 | |
| 0 |
| Nitrogen (N), % | 0 to 0.1 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.4 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.025 |