AISI 420 Stainless Steel vs. S17700 Stainless Steel
Both AISI 420 stainless steel and S17700 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 33 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 AISI 420 stainless steel and the bottom bar is S17700 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 | |
| 180 to 430 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 8.0 to 15 | |
| 1.0 to 23 |
| Fatigue Strength, MPa | 220 to 670 | |
| 290 to 560 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 420 to 1010 | |
| 740 to 940 |
| Tensile Strength: Ultimate (UTS), MPa | 690 to 1720 | |
| 1180 to 1650 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1310 | |
| 430 to 1210 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 620 | |
| 890 |
| Melting Completion (Liquidus), °C | 1510 | |
| 1440 |
| Melting Onset (Solidus), °C | 1450 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 27 | |
| 15 |
| Thermal Expansion, µm/m-K | 10 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.0 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.5 | |
| 13 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 2.8 |
| Embodied Energy, MJ/kg | 28 | |
| 40 |
| Embodied Water, L/kg | 100 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 14 | |
| 17 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 130 | |
| 15 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 4410 | |
| 460 to 3750 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 62 | |
| 42 to 59 |
| Strength to Weight: Bending, points | 22 to 41 | |
| 32 to 40 |
| Thermal Diffusivity, mm2/s | 7.3 | |
| 4.1 |
| Thermal Shock Resistance, points | 25 to 62 | |
| 39 to 54 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.75 to 1.5 |
| Carbon (C), % | 0.15 to 0.4 | |
| 0 to 0.090 |
| Chromium (Cr), % | 12 to 14 | |
| 16 to 18 |
| Iron (Fe), % | 82.3 to 87.9 | |
| 70.5 to 76.8 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 to 0.75 | |
| 6.5 to 7.8 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |