EN 10225 1.8889 + M Introduce
EN 10225 is a European steel standard, which is part of the EN 10225 series of European structural steel standards. It defines technical delivery conditions for offshore structures, specifically for steel grade S355G2+N. This standard was released in 2009 and was designed to replace the previous BS7191 standard. It is important to note that this standard applies specifically to offshore structures and not to bridges, buildings, or any type of municipal structures.
Smelting temperature:1683°C - 1746°C
Application:Weldable structural steel with fixed offshore structure - Technical delivery conditions
EN 10225 1.8889 + M Material Chemical Composition
The chemical composition of the EN 10225 1.8889 + M steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0800 |
| Titanium (Ti) | - | 0.0250 |
| Tin (Sn) | - | 0.0200 |
| Silicon (Si) | - | 0.5500 |
| Antimony (Sb) | - | 0.0100 |
| Sulfur (S) | - | 0.0070 |
| Lead (Pb) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.7000 |
| (Nb+V) | - | 0.1200 |
| (Nb+Ti+V) | - | 0.1300 |
| Niobium (Nb) | - | 0.0500 |
| Nitrogen (N) | - | 0.0120 |
| Molybdenum (Mo) | - | 0.0800 |
| Manganese (Mn) | - | 1.7000 |
| Copper (Cu) | - | 0.3000 |
| (Cr+Ni+Cu+Mo) | - | 0.8000 |
| Chromium (Cr) | - | 0.2500 |
| Calcium (Ca) | - | 0.0050 |
| Carbon (C) | - | 0.1400 |
| Bismuth (Bi) | - | 0.0100 |
EN 10225 1.8889 + M Material Mechanical Properties
EN 10225 1.8889 + M steel is also highly formable. This is due to its low carbon content and addition of alloying elements. The combination of these factors allows EN 10225 1.8889 + M steel to be bent, deformed, and otherwise shaped without incurring ruptures or cracks. This makes EN 10225 1.8889 + M steel an ideal choice for fabricating complex shapes and components.
The mechanical properties of the EN 10225 1.8889 + M steel are as follows:
| YieldRp0.2 | ≤ 582 (MPa) |
| TeileRm | ≤ 831 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 423 |
EN 10225 1.8889 + M Material Thermal Properties
The thermal performance parameters of the EN 10225 1.8889 + M steel are as follows:
| Temperature (°C) | 21 | 792 | 714 |
| Modulus of elasticity (GPa) | - | 913 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 112 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 321 |
| Poisson’s coefficient, ν | - | - | 144 |
EN 10225 1.8889 + M Material Machining Technology
EN 10225 1.8889 + M steel is also highly weldable. This is due to its low carbon content and addition of alloying elements. The combination of these factors allows EN 10225 1.8889 + M steel to be welded with relative ease. This makes EN 10225 1.8889 + M steel an ideal choice for welded structures and components that require a high degree of strength and durability.