EN 10225 S355G1 + N 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:1178°C - 1747°C
Application:Weldable structural steel with fixed offshore structure - Technical delivery conditions
EN 10225 S355G1 + N Material Chemical Composition
The chemical composition of the EN 10225 S355G1 + N steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.1200 |
| Titanium (Ti) | - | 0.0300 |
| Silicon (Si) | - | 0.5000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | - | 0.5000 |
| Niobium (Nb) | - | 0.0500 |
| Nitrogen (N) | - | 0.0150 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | 0.9000 | 1.6500 |
| Copper (Cu) | - | 0.3500 |
| Chromium (Cr) | - | 0.3000 |
| (CEV) | - | 0.4300 |
| Carbon (C) | - | 0.2000 |
| Aluminum (Al) | 0.0200 | - |
EN 10225 S355G1 + N Material Mechanical Properties
EN 10225 S355G1 + N steel is also highly tough, meaning it can resist energy-absorbing impacts without incurring structural damage. This is due to a combination of its ductile properties and high yield strength. The combination of these properties makes EN 10225 S355G1 + N steel capable of withstanding impact forces with minimal damage.
The mechanical properties of the EN 10225 S355G1 + N steel are as follows:
| YieldRp0.2 | ≤ 682 (MPa) |
| TeileRm | ≤ 258 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 114 |
EN 10225 S355G1 + N Material Thermal Properties
The thermal performance parameters of the EN 10225 S355G1 + N steel are as follows:
| Temperature (°C) | 21 | 785 | 184 |
| Modulus of elasticity (GPa) | - | 363 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 341 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 223 |
| Poisson’s coefficient, ν | - | - | 213 |
EN 10225 S355G1 + N Material Machining Technology
EN 10225 S355G1 + N 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 S355G1 + N steel to be welded with relative ease. This makes EN 10225 S355G1 + N steel an ideal choice for welded structures and components that require a high degree of strength and durability.