EN 1.7225 Steel vs. ASTM A387 Grade 12 Steel
Both EN 1.7225 steel and ASTM A387 grade 12 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is EN 1.7225 steel and the bottom bar is ASTM A387 grade 12 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 160 to 300 | |
140 to 160 |
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 | 540 to 1850 | |
470 to 520 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 420 | |
430 |
Melting Completion (Liquidus), °C | 1460 | |
1470 |
Melting Onset (Solidus), °C | 1420 | |
1420 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 46 | |
44 |
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 | |
2.8 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
1.6 |
Embodied Energy, MJ/kg | 20 | |
21 |
Embodied Water, L/kg | 51 | |
51 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 19 to 65 | |
16 to 18 |
Strength to Weight: Bending, points | 19 to 43 | |
17 to 18 |
Thermal Diffusivity, mm2/s | 12 | |
12 |
Thermal Shock Resistance, points | 16 to 54 | |
14 to 15 |
Alloy Composition
Carbon (C), % | 0.38 to 0.45 | |
0.050 to 0.17 |
Chromium (Cr), % | 0.9 to 1.2 | |
0.8 to 1.2 |
Copper (Cu), % | 0 to 0.25 | |
0 |
Iron (Fe), % | 96.6 to 98 | |
97 to 98.2 |
Manganese (Mn), % | 0.6 to 0.9 | |
0.4 to 0.65 |
Molybdenum (Mo), % | 0.15 to 0.3 | |
0.45 to 0.6 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.025 |
Silicon (Si), % | 0 to 0.4 | |
0.15 to 0.4 |
Sulfur (S), % | 0 to 0.035 | |
0 to 0.025 |