ASTM A302 Alloy Steel vs. S20910 Stainless Steel
Both ASTM A302 alloy steel and S20910 stainless steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 230 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 20 to 23 | |
| 14 to 39 |
| Fatigue Strength, MPa | 250 to 280 | |
| 310 to 460 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Shear Strength, MPa | 370 to 390 | |
| 500 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 780 to 940 |
| Tensile Strength: Yield (Proof), MPa | 350 to 390 | |
| 430 to 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 | 39 to 51 | |
| 13 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 to 3.0 | |
| 22 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 4.8 |
| Embodied Energy, MJ/kg | 20 to 21 | |
| 68 |
| Embodied Water, L/kg | 48 to 50 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 120 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 410 | |
| 460 to 1640 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 3.6 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 17 to 21 |