EN 1.4029 Stainless Steel vs. EN 1.4122 Stainless Steel
Both EN 1.4029 stainless steel and EN 1.4122 stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4029 stainless steel and the bottom bar is EN 1.4122 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 10 to 20 | |
| 14 |
| Fatigue Strength, MPa | 270 to 400 | |
| 260 to 360 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 77 |
| Shear Strength, MPa | 440 to 550 | |
| 480 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 930 | |
| 790 to 850 |
| Tensile Strength: Yield (Proof), MPa | 410 to 740 | |
| 450 to 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 870 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 15 |
| Thermal Expansion, µm/m-K | 10 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.1 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.7 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 9.5 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 2.4 |
| Embodied Energy, MJ/kg | 28 | |
| 33 |
| Embodied Water, L/kg | 100 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 14 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 89 to 120 | |
| 93 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 440 to 1410 | |
| 520 to 1000 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 33 | |
| 28 to 31 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 25 to 26 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 4.0 |
| Thermal Shock Resistance, points | 26 to 34 | |
| 28 to 30 |
Alloy Composition
| Carbon (C), % | 0.25 to 0.32 | |
| 0.33 to 0.45 |
| Chromium (Cr), % | 12 to 13.5 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 82.8 to 87.6 | |
| 77.2 to 83.4 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 to 0.6 | |
| 0.8 to 1.3 |
| Nickel (Ni), % | 0 | |
| 0 to 1.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0.15 to 0.25 | |
| 0 to 0.015 |