EN 1.7231 Steel vs. EN 1.7703 Steel
Both EN 1.7231 steel and EN 1.7703 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is EN 1.7703 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 240 to 280 | |
200 to 210 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 11 to 12 | |
20 |
Fatigue Strength, MPa | 360 to 500 | |
320 to 340 |
Impact Strength: V-Notched Charpy, J | 28 to 30 | |
46 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
74 |
Tensile Strength: Ultimate (UTS), MPa | 790 to 930 | |
670 to 690 |
Tensile Strength: Yield (Proof), MPa | 570 to 800 | |
460 to 500 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 420 | |
460 |
Melting Completion (Liquidus), °C | 1460 | |
1470 |
Melting Onset (Solidus), °C | 1420 | |
1430 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 46 | |
39 |
Thermal Expansion, µm/m-K | 13 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
7.6 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
8.7 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.5 | |
4.2 |
Density, g/cm3 | 7.8 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
2.5 |
Embodied Energy, MJ/kg | 20 | |
35 |
Embodied Water, L/kg | 51 | |
61 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 100 | |
120 to 130 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 1700 | |
570 to 650 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 28 to 33 | |
24 |
Strength to Weight: Bending, points | 24 to 27 | |
22 |
Thermal Diffusivity, mm2/s | 12 | |
11 |
Thermal Shock Resistance, points | 23 to 27 | |
19 to 20 |
Alloy Composition
Carbon (C), % | 0.38 to 0.45 | |
0.11 to 0.15 |
Chromium (Cr), % | 0.8 to 1.2 | |
2.0 to 2.5 |
Copper (Cu), % | 0 | |
0 to 0.2 |
Iron (Fe), % | 96.4 to 98.1 | |
94.6 to 96.4 |
Manganese (Mn), % | 0.6 to 1.0 | |
0.3 to 0.6 |
Molybdenum (Mo), % | 0.15 to 0.3 | |
0.9 to 1.1 |
Nickel (Ni), % | 0 | |
0 to 0.25 |
Niobium (Nb), % | 0 | |
0 to 0.070 |
Nitrogen (N), % | 0 | |
0 to 0.012 |
Phosphorus (P), % | 0 to 0.025 | |
0 to 0.015 |
Silicon (Si), % | 0 to 0.6 | |
0 to 0.1 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.0050 |
Titanium (Ti), % | 0 | |
0 to 0.030 |
Vanadium (V), % | 0 | |
0.25 to 0.35 |