EN 1.4988 Stainless Steel vs. EN 1.4306 Stainless Steel
Both EN 1.4988 stainless steel and EN 1.4306 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 1.4988 stainless steel and the bottom bar is EN 1.4306 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 | |
| 190 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 34 | |
| 14 to 45 |
| Fatigue Strength, MPa | 230 | |
| 190 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 430 | |
| 400 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 640 | |
| 580 to 900 |
| Tensile Strength: Yield (Proof), MPa | 290 | |
| 210 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 520 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 920 | |
| 960 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1420 |
| Melting Onset (Solidus), °C | 1400 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 15 | |
| 15 |
| Thermal Expansion, µm/m-K | 16 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 16 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 6.0 | |
| 3.2 |
| Embodied Energy, MJ/kg | 89 | |
| 45 |
| Embodied Water, L/kg | 150 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 22 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 180 | |
| 110 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 | |
| 110 to 820 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 23 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 21 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 4.0 |
| Thermal Shock Resistance, points | 14 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0.040 to 0.1 | |
| 0 to 0.030 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 18 to 20 |
| Iron (Fe), % | 62.1 to 69.5 | |
| 64.8 to 72 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 1.1 to 1.5 | |
| 0 |
| Nickel (Ni), % | 12.5 to 14.5 | |
| 10 to 12 |
| Niobium (Nb), % | 0.4 to 1.2 | |
| 0 |
| Nitrogen (N), % | 0.060 to 0.14 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 0.3 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.015 |
| Vanadium (V), % | 0.6 to 0.85 | |
| 0 |