EN 1.4988 Stainless Steel vs. EN 1.4305 Stainless Steel
Both EN 1.4988 stainless steel and EN 1.4305 stainless steel are iron alloys. They have a moderately high 93% 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 1.4305 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 | |
| 200 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 34 | |
| 14 to 40 |
| Fatigue Strength, MPa | 230 | |
| 190 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 430 | |
| 420 to 550 |
| Tensile Strength: Ultimate (UTS), MPa | 640 | |
| 610 to 900 |
| Tensile Strength: Yield (Proof), MPa | 290 | |
| 220 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 520 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 920 | |
| 930 |
| 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 | |
| 15 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 6.0 | |
| 3.0 |
| Embodied Energy, MJ/kg | 89 | |
| 42 |
| Embodied Water, L/kg | 150 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 22 | |
| 19 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 180 | |
| 110 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 | |
| 120 to 830 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 23 | |
| 22 to 32 |
| Strength to Weight: Bending, points | 21 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 4.0 |
| Thermal Shock Resistance, points | 14 | |
| 14 to 20 |
Alloy Composition
| Carbon (C), % | 0.040 to 0.1 | |
| 0 to 0.1 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 17 to 19 |
| Copper (Cu), % | 0 | |
| 0 to 1.0 |
| Iron (Fe), % | 62.1 to 69.5 | |
| 66.4 to 74.9 |
| 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 | |
| 8.0 to 10 |
| 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 | |
| 0.15 to 0.35 |
| Vanadium (V), % | 0.6 to 0.85 | |
| 0 |