EN 10025-2 is the British version of the European standard for hot-rolled structural steels, with S275J2 offering good strength, weldability, and impact resistance at -20°C.
This article provides a comprehensive overview of bs en 10025-2 s275j2 structural steel plates, including chemical composition, mechanical properties, applications, and benefits, offering valuable insights for engineers, fabricators, and procurement specialists.
Chemical Composition
The chemical composition of en 10025-2 s275j2 is tightly controlled to achieve optimal mechanical properties while maintaining weldability and formability. The table below outlines the typical composition per DIN EN 10025-2:
|
Element |
Composition (% by weight) |
|---|---|
|
Carbon (C) |
0.18 max |
|
Manganese (Mn) |
1.50 max |
|
Phosphorus (P) |
0.030 max |
|
Sulfur (S) |
0.025 max |
|
Silicon (Si) |
0.55 max |
|
Copper (Cu) |
0.55 max |
|
Nitrogen (N) |
0.012 max |
|
Iron (Fe) |
Balance |
Key Notes:
Carbon: Limited to 0.18% to ensure good weldability and prevent brittleness, critical for structural applications.
Manganese: Up to 1.50% enhances strength and toughness without compromising ductility.
Phosphorus and Sulfur: Low levels (0.030% P, 0.025% S) improve impact resistance, especially at subzero temperatures (tested at -20°C for J2).
Silicon and Copper: Contribute to atmospheric corrosion resistance, making en 10025-2 s275j2 suitable for outdoor structures.
Gnee;'s en 10025-2 s275j2 plates undergo stringent chemical analysis to meet DIN EN 10025-2 requirements, with options for additional testing such as ultrasonic inspection.
Mechanical Properties
n 10025-2 s275j2 offers excellent mechanical properties, making it versatile for structural engineering. The table below summarizes its key properties per DIN EN 10025-2 (for plates up to 16 mm thickness):
|
Property |
Value |
|---|---|
|
Yield Strength (min) |
275 MPa |
|
Tensile Strength |
410–560 MPa |
|
Elongation (min, 200 mm) |
20% |
|
Impact Toughness (Charpy V-notch) |
27 J at -20°C |
|
Hardness (HB, typical) |
130–180 HB |
Thickness Tolerance
|
Nominal Thickness t (mm) |
Tolerance (mm) Upper/Lower |
|---|---|
|
t ≤ 3 |
±0.3 |
|
3 < t ≤ 5 |
±0.4 |
|
5 < t ≤ 8 |
±0.5 |
|
8 < t ≤ 15 |
±0.6 |
|
15 < t ≤ 25 |
±0.8 |
|
25 < t ≤ 40 |
±1.0 |
|
40 < t ≤ 80 |
±1.2 |
|
80 < t ≤ 100 |
±1.4 |
|
100 < t ≤ 150 |
±1.8 |
|
150 < t ≤ 200 |
±2.2 |
|
200 < t ≤ 250 |
±2.6 |
en 10025-2 s275j2 Equivalent Material
|
Country/Standard |
Equivalent Grade |
Notes |
|---|---|---|
|
USA (ASTM) |
A572 Grade 42 |
Similar strength and weldability |
|
Germany (DIN) |
ST44-3N |
Comparable toughness at -20°C |
|
Japan (JIS) |
SM400C |
Equivalent for structural use |
|
China (GB) |
Q275D |
Matches yield strength and impact |
|
France (AFNOR) |
E28-3 |
Similar properties for construction |
|
ISO |
FE430D |
General structural equivalent |
|
UK (BS) |
43D |
Comparable for offshore applications |
Products Application
En 10025-2 s275j2 is versatile and widely used in:
Construction: For bridges, buildings, and stadiums, where moderate strength and low-temperature toughness are required.
Offshore Engineering: In platforms and wind turbines, leveraging its corrosion resistance and impact toughness.
Heavy Machinery: For cranes, excavators, and mining equipment, where durability under dynamic loads is critical.
Shipbuilding: In hulls and superstructures, benefiting from its weldability and strength.
Energy Sector: For pipelines and storage tanks, similar to EN 10025 S355J2G3 material steel plates but with moderate strength.
