EN 1.7380 +NT Steel vs. EN 1.7767 +NT Steel
Both EN 1.7380 +NT steel and EN 1.7767 +NT steel are iron alloys. Both are furnished in the normalized and tempered condition. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.7380 +NT steel and the bottom bar is EN 1.7767 +NT steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 20 |
| Fatigue Strength, MPa | 230 | |
| 340 |
| Impact Strength: V-Notched Charpy, J | 35 | |
| 46 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 74 | |
| 74 |
| Shear Strength, MPa | 350 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 690 |
| Tensile Strength: Yield (Proof), MPa | 330 | |
| 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 460 | |
| 480 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1470 |
| Melting Onset (Solidus), °C | 1430 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 39 | |
| 40 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.8 | |
| 4.5 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 2.4 |
| Embodied Energy, MJ/kg | 23 | |
| 33 |
| Embodied Water, L/kg | 59 | |
| 64 |
Common Calculations
| PREN (Pitting Resistance) | 5.6 | |
| 6.4 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 650 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 | |
| 24 |
| Strength to Weight: Bending, points | 19 | |
| 22 |
| Thermal Diffusivity, mm2/s | 11 | |
| 11 |
| Thermal Shock Resistance, points | 16 | |
| 20 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.14 | |
| 0.1 to 0.15 |
| Chromium (Cr), % | 2.0 to 2.5 | |
| 2.8 to 3.3 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 to 0.25 |
| Iron (Fe), % | 94.6 to 96.6 | |
| 93.8 to 95.8 |
| Manganese (Mn), % | 0.4 to 0.8 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 0 | |
| 0 to 0.25 |
| Niobium (Nb), % | 0 | |
| 0 to 0.070 |
| Nitrogen (N), % | 0 to 0.012 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.0050 |
| Titanium (Ti), % | 0 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.2 to 0.3 |