Cold Finished SAE-AISI 4620 vs. Strain Hardened S20910 Stainless Steel
Both cold finished SAE-AISI 4620 and strain hardened S20910 stainless steel are iron alloys. Both are furnished in the cold worked (strain hardened) condition. They have 60% of their average alloy composition in common. There are 29 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 cold finished SAE-AISI 4620 and the bottom bar is strain hardened S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 16 | |
| 14 |
| Fatigue Strength, MPa | 360 | |
| 460 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Shear Strength, MPa | 420 | |
| 570 |
| Tensile Strength: Ultimate (UTS), MPa | 680 | |
| 940 |
| Tensile Strength: Yield (Proof), MPa | 550 | |
| 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 1080 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1420 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 47 | |
| 13 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.2 | |
| 22 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 4.8 |
| Embodied Energy, MJ/kg | 22 | |
| 68 |
| Embodied Water, L/kg | 50 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 800 | |
| 1640 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 24 | |
| 33 |
| Strength to Weight: Bending, points | 22 | |
| 27 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.6 |
| Thermal Shock Resistance, points | 20 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0.17 to 0.22 | |
| 0 to 0.060 |
| Chromium (Cr), % | 0 | |
| 20.5 to 23.5 |
| Iron (Fe), % | 96.4 to 97.4 | |
| 52.1 to 62.1 |
| Manganese (Mn), % | 0.45 to 0.65 | |
| 4.0 to 6.0 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 1.5 to 3.0 |
| Nickel (Ni), % | 1.7 to 2.0 | |
| 11.5 to 13.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.3 |