20MnCr5
February 24, 2017
S235JRH
February 24, 2017
S355JR is a structural grade steel that is often used in the construction industry. It has excellent strength and weldability characteristics. The term “Hollow Section” refers to a variety of shapes of hollow structural sections, including rectangular and square shapes.
Thus, a S355JR Hollow Section Rectangular or Square Steel Pipe would be a hollow, square or rectangular sectioned pipe made out of S355JR grade steel.
Here are some key features of a typical S355JR Hollow Section Steel Pipe:
S355JR Hollow Section Rectangular/Square Steel Pipe
- Material: S355JR grade steel, a structural steel grade that offers high yield and tensile strength. It’s often used in structural applications such as bridges, buildings, and load-bearing structures.
- Shape: Hollow, with a rectangular or square cross-section. These shapes are often used where strong resistance to torsion is required.
- Size: Sizes can vary greatly depending on the application. Common sizes for the square pipes range from 20x20mm to 500x500mm, while the rectangular pipes might range from 40x20mm to 400x200mm.
- Wall Thickness: This can also vary greatly, but common thicknesses might range from 1.5mm to 30mm.
- Surface Treatment: Pipes can be treated in a variety of ways to protect against corrosion, improve appearance, or enhance mechanical properties. Common surface treatments include painting, galvanizing, or oiling.
- Standard: Compliance to certain standards depending on the region such as EN 10219- S355JR in Europe, ASTM A500 in USA or IS 4923 in India.
Remember, the exact specifications will depend on the manufacturer and the intended use of the steel pipe.
| Property | Description |
| --- | --- |
| **Material** | S355JR grade steel |
| **Shape** | Hollow, rectangular or square |
| **Size** | Varies, commonly 20x20mm to 500x500mm (square), 40x20mm to 400x200mm (rectangular) |
| **Wall Thickness** | Varies, commonly 1.5mm to 30mm |
| **Surface Treatment** | Painting, galvanizing, oiling, etc. |
| **Standard** | Varies, e.g. EN 10219- S355JR, ASTM A500, IS 4923 |
Before purchasing any steel product, it’s important to confirm that its specifications, including dimensions, grade, and treatment, meet the requirements of your specific application.
| Grade : | S355JR Hollow Section Rectangular/Square Steel Pipe | |
| Number: | 1.0045 | |
| Classification: | Non-alloy quality structural steel | |
| Standard: |
|
| Nominal thickness =< 30(mm) CEV max = 0.45 |
| C | Si | Mn | P | S | N | Cu | CEV |
| max 0.24 | max 0.55 | max 1.6 | max 0.04 | max 0.04 | max 0.012 | max 0.55 | max 0.47 |
Mechanical properties of grade S355JR (1.0045)
| Nominal thickness (mm): | to 3 | 3 – 100 | 100 – 150 | 150 – 250 |
| Rm – Tensile strength (MPa) Flat and long products | 510-680 | 470-630 | 450-600 | 450-600 |
| Nominal thickness (mm): | to 16 | 16 – 40 | 40 – 63 | 63 – 80 | 80 – 100 | 100 – 150 | 150 – 200 | 200 – 250 |
| ReH – Minimum yield strength (MPa) Flat and long products | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
| KV – Impact energy (J) longitud., | -20° 27 |
0° 27 |
+20° 27 |
| Nominal thickness (mm): | to 1 | 1 – 1.5 | 1.5 – 2 | 2 – 2.5 | 2.5 – 3 |
| A – Min. elongation Lo = 80 mm (%) parallel, | 14 | 15 | 16 | 17 | 18 |
| Nominal thickness (mm): | 3 – 40 | 40 – 63 | 63 – 100 | 100 – 150 | 150 – 250 |
| A – Min. elongation Lo = 5,65 √ So (%) parallel, | 22 | 21 | 20 | 18 | 17 |
