ASTM A387 Grade 91 Class 2 vs. EN 1.4962 Stainless Steel
Both ASTM A387 grade 91 class 2 and EN 1.4962 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is EN 1.4962 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 190 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 20 | |
| 22 to 34 |
| Fatigue Strength, MPa | 330 | |
| 210 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Shear Strength, MPa | 420 | |
| 420 to 440 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 630 to 690 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 260 to 490 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 910 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1480 |
| Melting Onset (Solidus), °C | 1420 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 26 | |
| 14 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 23 |
| Density, g/cm3 | 7.8 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 4.1 |
| Embodied Energy, MJ/kg | 37 | |
| 59 |
| Embodied Water, L/kg | 88 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 21 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 140 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 | |
| 170 to 610 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 24 | |
| 21 to 24 |
| Strength to Weight: Bending, points | 22 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 3.7 |
| Thermal Shock Resistance, points | 19 | |
| 14 to 16 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0 |
| Boron (B), % | 0 | |
| 0.0015 to 0.0060 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.070 to 0.15 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 87.3 to 90.3 | |
| 62.1 to 69 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 to 0.4 | |
| 12.5 to 14.5 |
| Niobium (Nb), % | 0.060 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.030 to 0.070 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.2 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0.4 to 0.7 |
| Tungsten (W), % | 0 | |
| 2.5 to 3.0 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |