EN 10225 1.8889 Introduce
EN 10225 is an European standard for hot rolled structural steel products that applies to steel sections (including wide flange beams), steel bars, wire rods, flat products (strip, plate, wide flats) and forgings that are manufactured for use in the offshore and related industries. EN 10225 1.8889 specifies requirements for the manufacture of core components for offshore structures, including welded and fatigue performance criteria. It is also designed to provide weldable structural steels for use in the offshore industry, which have improved weldability when compared to traditional steels available.
Smelting temperature:1169°C - 1754°C
Application:Weldable structural steel with fixed offshore structure - Technical delivery conditions
EN 10225 1.8889 Material Chemical Composition
The chemical composition of the EN 10225 1.8889 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 |
| Boron (B) | - | 0.0005 |
| Arsenic (As) | - | 0.0300 |
| Aluminum (Al) | 0.0150 | 0.0550 |
EN 10225 1.8889 Material Mechanical Properties
EN 10225 1.8889 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 steel to be bent, deformed, and otherwise shaped without incurring ruptures or cracks. This makes EN 10225 1.8889 steel an ideal choice for fabricating complex shapes and components.
The mechanical properties of the EN 10225 1.8889 steel are as follows:
| YieldRp0.2 | ≤ 517 (MPa) |
| TeileRm | ≤ 295 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
EN 10225 1.8889 Material Thermal Properties
The thermal performance parameters of the EN 10225 1.8889 steel are as follows:
| Temperature (°C) | 42 | 987 | 134 |
| Modulus of elasticity (GPa) | - | 488 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 243 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 312 |
| Poisson’s coefficient, ν | - | - | 423 |
EN 10225 1.8889 Material Machining Technology
EN 10225 1.8889 steels are produced in grades S355G2+N, S355G3+N, S355G7+N, S355G8+N and S355G10+N. These grades are allocated according to specific strength levels so that appropriate application is possible. The grades are characterized by their minimum specified yield strength and weldability characteristics.