EN 1.4525 Stainless Steel vs. ACI-ASTM CD4MCu Steel
Both EN 1.4525 stainless steel and ACI-ASTM CD4MCu steel are iron alloys. They have 88% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4525 stainless steel and the bottom bar is ACI-ASTM CD4MCu steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 5.6 to 13 | |
| 18 |
| Fatigue Strength, MPa | 480 to 540 | |
| 340 |
| Poisson's Ratio | 0.28 | |
| 0.27 |
| Shear Modulus, GPa | 76 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 1030 to 1250 | |
| 770 |
| Tensile Strength: Yield (Proof), MPa | 840 to 1120 | |
| 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 300 |
| Maximum Temperature: Corrosion, °C | 430 | |
| 450 |
| Maximum Temperature: Mechanical, °C | 860 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1430 |
| Melting Onset (Solidus), °C | 1390 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 18 | |
| 17 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.6 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 18 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 3.5 |
| Embodied Energy, MJ/kg | 39 | |
| 49 |
| Embodied Water, L/kg | 130 | |
| 180 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 32 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 68 to 130 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1820 to 3230 | |
| 760 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 36 to 45 | |
| 28 |
| Strength to Weight: Bending, points | 29 to 33 | |
| 24 |
| Thermal Diffusivity, mm2/s | 4.7 | |
| 4.5 |
| Thermal Shock Resistance, points | 34 to 41 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.040 |
| Chromium (Cr), % | 15 to 17 | |
| 24.5 to 26.5 |
| Copper (Cu), % | 2.5 to 4.0 | |
| 2.8 to 3.3 |
| Iron (Fe), % | 70.4 to 79 | |
| 59.9 to 66.3 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.8 | |
| 1.8 to 2.3 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 4.8 to 6.0 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.8 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.040 |