EN 1.7240 Steel vs. EN 1.7243 Steel
Both EN 1.7240 steel and EN 1.7243 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.7240 steel and the bottom bar is EN 1.7243 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 200 to 480 | |
150 to 170 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 670 to 1990 | |
480 to 1390 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 420 | |
420 |
Melting Completion (Liquidus), °C | 1460 | |
1460 |
Melting Onset (Solidus), °C | 1410 | |
1420 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 44 | |
44 |
Thermal Expansion, µm/m-K | 13 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
7.3 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
8.3 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.4 | |
2.5 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
1.5 |
Embodied Energy, MJ/kg | 20 | |
20 |
Embodied Water, L/kg | 50 | |
51 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 24 to 71 | |
17 to 49 |
Strength to Weight: Bending, points | 22 to 45 | |
17 to 35 |
Thermal Diffusivity, mm2/s | 12 | |
12 |
Thermal Shock Resistance, points | 20 to 59 | |
14 to 41 |
Alloy Composition
Carbon (C), % | 0.56 to 0.64 | |
0.15 to 0.21 |
Chromium (Cr), % | 0.7 to 1.0 | |
0.9 to 1.2 |
Copper (Cu), % | 0 | |
0 to 0.25 |
Iron (Fe), % | 96.7 to 97.9 | |
96.8 to 98.2 |
Manganese (Mn), % | 0.7 to 1.0 | |
0.6 to 0.9 |
Molybdenum (Mo), % | 0.15 to 0.25 | |
0.15 to 0.25 |
Phosphorus (P), % | 0 to 0.025 | |
0 to 0.035 |
Silicon (Si), % | 0 to 0.4 | |
0 to 0.4 |
Sulfur (S), % | 0 to 0.025 | |
0 to 0.035 |