EN 1.4874 Stainless Steel vs. ASTM Grade HP Steel
Both EN 1.4874 stainless steel and ASTM grade HP steel are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 74% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4874 stainless steel and the bottom bar is ASTM grade HP steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 | |
| 140 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 200 |
| Elongation at Break, % | 6.7 | |
| 5.1 |
| Fatigue Strength, MPa | 180 | |
| 130 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 80 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 480 | |
| 490 |
| Tensile Strength: Yield (Proof), MPa | 360 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 320 |
| Maximum Temperature: Corrosion, °C | 560 | |
| 440 |
| Maximum Temperature: Mechanical, °C | 1150 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1370 |
| Melting Onset (Solidus), °C | 1400 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Conductivity, W/m-K | 13 | |
| 12 |
| Thermal Expansion, µm/m-K | 15 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 34 |
| Density, g/cm3 | 8.4 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 7.6 | |
| 5.8 |
| Embodied Energy, MJ/kg | 110 | |
| 82 |
| Embodied Water, L/kg | 290 | |
| 220 |
Common Calculations
| PREN (Pitting Resistance) | 34 | |
| 27 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 29 | |
| 21 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 310 | |
| 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 16 | |
| 17 |
| Strength to Weight: Bending, points | 16 | |
| 17 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 3.2 |
| Thermal Shock Resistance, points | 11 | |
| 11 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.65 | |
| 0.35 to 0.75 |
| Chromium (Cr), % | 19 to 22 | |
| 24 to 28 |
| Cobalt (Co), % | 18.5 to 22 | |
| 0 |
| Iron (Fe), % | 23 to 38.9 | |
| 29.2 to 42.7 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 2.5 to 3.0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 18 to 22 | |
| 33 to 37 |
| Niobium (Nb), % | 0.75 to 1.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 2.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.040 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 0 |