1.8818 is the material mumber of S275M steel. EN 10025-4 1.8818 steel: thermomechanical rolled structural steel (S) with a specified minimum yield strength at ambient temperature of 275 MPa, and with a specified minimum value of impact energy at -20°C.
Quality 1.8818 a kind of weldable fine grain structural steel. It is delivered for thermomechanical rolled condition. The dimensions, shape and tolerance of the steel plate shall comply with the requirements of 2.2 of 2004 of EN10025-1.
EN 10025-4 1.8818 Steel Plates Specification
Steel Standard: EN 10025-4
Grade: S275M/1.8818
Rolling Type: Structural steel plate,low
Alloy steel plateThickness: 5mm-150mm
Width: 1500mm-4200mm
Length: 3000mm-18000mm
Heat Treatment:Thermo-Mechanical Control Process (TMCP)
The mechanical properties and process performance of Steel EN 10025-4 S275M should meet the following requirements:
| Quality |
Thickness(mm) |
Yield strength (MPa) |
Tensile strength (MPa) |
Elongation (%) |
| 1.8818 |
≤16 |
≥275 |
370-530 |
24 min. |
| 16-40 |
≥265 |
370-530 |
| 41-63 |
≥255 |
360-520 |
| 63-80 |
≥245 |
350-510 |
| 80-100 |
≥245 |
350-510 |
| 100-120 |
≥240 |
350-510 |
EN 10025-4 1.8818 steel plates are especially intended for use in heavily loaded parts of welded structures such as bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.
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