ASTM A387 Grade 12 Steel vs. S17400 Stainless Steel
Both ASTM A387 grade 12 steel and S17400 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, 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 S17400 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 160 | |
| 280 to 440 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 25 | |
| 11 to 21 |
| Fatigue Strength, MPa | 190 to 230 | |
| 380 to 670 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 300 to 330 | |
| 570 to 830 |
| Tensile Strength: Ultimate (UTS), MPa | 470 to 520 | |
| 910 to 1390 |
| Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
| 580 to 1250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 850 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 44 | |
| 17 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
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 | |
| 14 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 2.7 |
| Embodied Energy, MJ/kg | 21 | |
| 39 |
| Embodied Water, L/kg | 51 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 2.7 | |
| 16 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 110 | |
| 140 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 250 | |
| 880 to 4060 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 16 to 18 | |
| 32 to 49 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 27 to 35 |
| Thermal Diffusivity, mm2/s | 12 | |
| 4.5 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 30 to 46 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.17 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 15 to 17 |
| Copper (Cu), % | 0 | |
| 3.0 to 5.0 |
| Iron (Fe), % | 97 to 98.2 | |
| 70.4 to 78.9 |
| Manganese (Mn), % | 0.4 to 0.65 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.45 to 0.6 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 3.0 to 5.0 |
| Niobium (Nb), % | 0 | |
| 0.15 to 0.45 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.4 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |