EN 1.7231 Steel vs. ASTM A372 Grade G Steel
Both EN 1.7231 steel and ASTM A372 grade G steel are iron alloys. Their average alloy composition is basically identical. There are 30 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 ASTM A372 grade G steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 240 to 280 | |
200 to 280 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 11 to 12 | |
20 to 22 |
Fatigue Strength, MPa | 360 to 500 | |
310 to 380 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 790 to 930 | |
650 to 910 |
Tensile Strength: Yield (Proof), MPa | 570 to 800 | |
430 to 550 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 420 | |
410 |
Melting Completion (Liquidus), °C | 1460 | |
1460 |
Melting Onset (Solidus), °C | 1420 | |
1420 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 46 | |
46 |
Thermal Expansion, µm/m-K | 13 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
7.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
8.3 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.5 | |
2.2 |
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 | 51 | |
49 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 100 | |
130 to 160 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 1700 | |
500 to 810 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 28 to 33 | |
23 to 32 |
Strength to Weight: Bending, points | 24 to 27 | |
21 to 27 |
Thermal Diffusivity, mm2/s | 12 | |
13 |
Thermal Shock Resistance, points | 23 to 27 | |
19 to 27 |
Alloy Composition
Carbon (C), % | 0.38 to 0.45 | |
0.25 to 0.35 |
Chromium (Cr), % | 0.8 to 1.2 | |
0.4 to 0.65 |
Iron (Fe), % | 96.4 to 98.1 | |
97.4 to 98.4 |
Manganese (Mn), % | 0.6 to 1.0 | |
0.7 to 1.0 |
Molybdenum (Mo), % | 0.15 to 0.3 | |
0.15 to 0.25 |
Phosphorus (P), % | 0 to 0.025 | |
0 to 0.015 |
Silicon (Si), % | 0 to 0.6 | |
0.15 to 0.35 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.010 |