EN 10083-1 1.1178 Introduce
In accordance with the EN 10083-1 1.1178 standard, the steel must have a specific product designator affixed to the product by the manufacturer that identifies key properties of the steel. This designator often includes information about the grade, composition, manufacturer, and manufacturing process. The designation must meet the requirements outlined in ISO 6929, which includes a set of criteria (such as the size of letters and typeset used) that must be followed in order for the product designation to be valid and clear.
Smelting temperature:1388°C - 1233°C
Application:Quenched and tempered steel - Part 1: General delivery technical conditions
EN 10083-1 1.1178 Material Chemical Composition
The chemical composition of the EN 10083-1 1.1178 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | - | 0.4000 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | 0.5000 | 0.8000 |
| Chromium (Cr) | - | 0.4000 |
| Carbon (C) | 0.2700 | 0.3400 |
EN 10083-1 1.1178 Material Mechanical Properties
Low carbon content gives EN 10083-1 1.1178 steels a very good balance between strength and ductility, whereas the added molybdenum and vanadium give the steel good fatigue resistance and thermal stability.
The mechanical properties of the EN 10083-1 1.1178 steel are as follows:
| YieldRp0.2 | ≤ 499 (MPa) |
| TeileRm | ≤ 842 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 222 |
EN 10083-1 1.1178 Material Thermal Properties
The thermal performance parameters of the EN 10083-1 1.1178 steel are as follows:
| Temperature (°C) | 31 | 717 | 636 |
| Modulus of elasticity (GPa) | - | 913 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 34 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 242 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 243 |
| Poisson’s coefficient, ν | - | - | 232 |
EN 10083-1 1.1178 Material Machining Technology
The machining of EN 10083-1 1.1178 steel requires a great deal of skill and precision. However, with the proper tools, lubricants, and techniques, it is possible to achieve an excellent finished product. When selecting the appropriate tool for the job, ensuring the workpiece and tool remain at the same temperature, and taking the time to properly polish or finish the part, the desired results can be reliably achieved.