S46910 Stainless Steel vs. ASTM A387 Grade 21 Steel
Both S46910 stainless steel and ASTM A387 grade 21 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 (6, in this case) are not shown.
For each property being compared, the top bar is S46910 stainless steel and the bottom bar is ASTM A387 grade 21 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 630 | |
| 150 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 2.2 to 11 | |
| 21 |
| Fatigue Strength, MPa | 250 to 1020 | |
| 160 to 250 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 74 |
| Shear Strength, MPa | 410 to 1410 | |
| 310 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 680 to 2470 | |
| 500 to 590 |
| Tensile Strength: Yield (Proof), MPa | 450 to 2290 | |
| 230 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 810 | |
| 480 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1420 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 18 | |
| 4.1 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.1 | |
| 1.8 |
| Embodied Energy, MJ/kg | 55 | |
| 23 |
| Embodied Water, L/kg | 140 | |
| 62 |
Common Calculations
| PREN (Pitting Resistance) | 25 | |
| 6.4 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 48 to 130 | |
| 84 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 to 4780 | |
| 140 to 320 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 24 to 86 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 22 to 51 | |
| 18 to 20 |
| Thermal Shock Resistance, points | 23 to 84 | |
| 14 to 17 |
Alloy Composition
| Aluminum (Al), % | 0.15 to 0.5 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0.050 to 0.15 |
| Chromium (Cr), % | 11 to 13 | |
| 2.8 to 3.3 |
| Copper (Cu), % | 1.5 to 3.5 | |
| 0 |
| Iron (Fe), % | 65 to 76 | |
| 94.4 to 96 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 8.0 to 10 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.7 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.025 |
| Titanium (Ti), % | 0.5 to 1.2 | |
| 0 |