Products Description
S235 and S355 are two common types of steel used in the construction industry. While both of these materials are excellent for building projects, there are differences between them that you should know about.
S235 is a low carbon steel that is commonly used in structural applications. It has a minimum yield strength of 235 N/mm², which is ideal for building constructions. This type of steel is commonly used in bridges, buildings, and other construction projects that require a high-strength material. S235 is also well-known for its excellent weldability and formability, which makes it easy to work with.
On the other hand, S355 is a high-strength structural steel that has a yield strength of 355 N/mm². This makes it a preferred choice for high-stress applications such as heavy construction projects, offshore drilling rigs, and steel bridges. S355 is known for its outstanding mechanical properties, including excellent impact resistance, good ductility, and high toughness.
One key difference between S235 and S355 is their chemical composition. S355 contains a higher percentage of carbon than S235, which gives it its superior strength and hardness. In addition to this, S355 also contains small amounts of other alloys such as manganese, silicon, and phosphorus that contribute to its exceptional mechanical properties.
S - stands for structural steel
355 - stands for minimum yield strength (though it will vary based on thickness, refer below section for more details)
Normally S355 will have following variation based on impact strength at different temperatures, as steel become more brittle when temperature drops. If your structure need to withstand -20°C, it's better and safer to choose S355J2.
S355JR - Can withstand an impact energy of 27J at +20°C
S355J0 - Can withstand an impact energy of 27J at 0°C
S355J2 - Can withstand an impact energy of 27J at -20°C
S355K2 - Can withstand an impact energy of 27J at -30°C (40J at -20°C)
S355 Chemical Composition
|
Designation |
C % |
Si % |
Mn % |
P% |
S% |
N% |
Cu% |
|
S355JR |
0.24 |
0.55 | 1.6 | 0.035 | 0.035 | 0.012 |
0.55 |
|
S355J0 |
0.2 |
0.55 |
1.6 |
0.030 |
0.030 |
0.012 |
0.55 |
|
S355J2 |
0.2 |
0.55 |
1.6 |
0.025 |
0.025 |
- |
0.55 |
|
S355K2 |
0.2 |
0.55 |
1.6 |
0.025 |
0.025 |
- |
0.55 |
Products Details
Introduction：
| Product Name | EN S255 S355 steel angle |
| Thickness | 3-25mm |
| Length |
as your requested |
| Standards | JIS, ASTM, GB, EN,etc. |
| Packing | in bundle,packed with steel belts tightly |
| Surface | Painted;Galvanized;Weld |
| Origin | China |
| Price Term | FOB, CIF, EXW,DDP, etc. |
| Delivery Time | 3-30 days,according to your quantity |
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