Products Details of S355J2 channel Steel
S355J2 U Channel Steel Beam is a high-strength structural steel profile widely used in construction, machinery manufacturing, and structural engineering projects.
Manufactured according to the EN 10025-2 standard, S355J2 steel provides excellent mechanical properties and reliable performance in demanding environments.
One of the key characteristics of S355J2 U channel steel is its excellent low-temperature toughness. The "J2" designation indicates that the material has a minimum impact energy of 27 Joules at −20°C, ensuring strong resistance to brittle fracture in cold climates or heavy-duty structural applications.
S355J2 channel steel offers a minimum yield strength of 355 MPa and good tensile strength, making it suitable for structures that require both high load-bearing capacity and structural stability. Its U-shaped cross-section provides efficient weight distribution while maintaining strong support performance.
In addition, S355J2 UPN channel steel features excellent weldability, machinability, and fabrication properties, allowing it to be easily cut, drilled, welded, or assembled into various structural frameworks.
As a professional steel supplier, we provide high-quality S355J2 U channel steel beams in multiple sizes and customized lengths.If you need the lastest quote of S355j2 channel steel bar, please contact us!
specification of S355J2 channel beams
| Product Name | S355J2 channel beams |
| Length | As your required |
| Standard | ASTM/ GB/ JIS/ EN ect. |
| Delivery Time | According to your quantity |
| Payment Terms | FOB/ CIF/ EXW/ DDP |
| Origin | China |
| Sample | Yes |
| Tolerance | ±0.3 |
| Packing | Packed with steel belts tightly, in bundle |
Chemical composition of S355j2 steel (max %)
Grade |
C |
Si |
Mn |
P |
S |
Cu |
|
S355j2 |
0.24 |
0.60 |
1.70 |
0.035 |
0.035 |
0.60 |
S355J2 channel steel bar mechanical properties
Nominal thickness (mm) |
to 16 |
16 - 40 |
40 - 63 |
63 - 80 |
80 - 100 |
100 - 150 |
150 - 200 |
200-250 |
250-400 |
|
ReH - Minimum yield strength (MPa) |
355 |
345 |
335 |
325 |
315 |
295 |
285 |
275 |
265 |
|
Nominal thickness (mm) |
-3 |
3-100 |
100-150 |
150-250 |
250-400 |
|
Rm -Tensile strength (MPa) |
510-680 |
470-630 |
450-600 |
450-600 |
450-600 |
|
Nominal thickness (mm) |
3-40 |
40-63 |
63-100 |
100-150 |
150-250 |
250-400 |
|
A - Minimum elongation Lo = 5,65 √ So (%) |
22 |
21 |
20 |
18 |
17 |
17 |
S355J2 Channel Steel Dimensional Tolerances
Height (h) Tolerance
| Nominal Height h (mm) | Permissible Deviation |
|---|---|
| h ≤ 100 | ±2.0 mm |
| 100 < h ≤ 200 | ±2.5 mm |
| 200 < h ≤ 400 | ±3.0 mm |
Height tolerance ensures that the structural channel maintains correct load distribution and assembly compatibility.
Flange Width (b) Tolerance
| Nominal Width b (mm) | Permissible Deviation |
|---|---|
| b ≤ 50 | ±1.5 mm |
| 50 < b ≤ 100 | ±2.0 mm |
| b > 100 | ±2.5 mm |
Flange width tolerance affects the connection accuracy when channels are bolted or welded in structural frames.
Web Thickness (tw) Tolerance
| Nominal Thickness (mm) | Permissible Deviation |
|---|---|
| ≤ 8 mm | ±0.7 mm |
| 8 – 16 mm | ±0.9 mm |
| >16 mm | ±1.2 mm |
The web thickness tolerance is important for maintaining the load-bearing capacity of the channel.
Flange Thickness (tf) Tolerance
| Nominal Thickness (mm) | Permissible Deviation |
|---|---|
| ≤ 10 mm | ±0.8 mm |
| 10 – 20 mm | ±1.0 mm |
| >20 mm | ±1.3 mm |
Consistent flange thickness ensures structural stability and uniform welding quality.
Length Tolerance
| Length Type | Permissible Deviation |
|---|---|
| Standard length (6m / 12m) | +100 / −0 mm |
| Fixed length | ±50 mm |
| Custom cut length | ±3 mm (cutting tolerance) |
Weight Tolerance
| Condition | Permissible Deviation |
|---|---|
| Single piece | ±6 % |
| Batch weight | ±4 % |
Weight tolerance ensures consistency with the theoretical weight specified in the section table.
Application Of S355J2 Channel beam
1. Ordinary structural steel (like S235JR or S355JR) can become brittle and prone to sudden "brittle fracture" when temperatures drop below freezing, leading to catastrophic structural failure in bridges or buildings.
Our Marine and industrial environments accelerate rust and corrosion. Many steel channels have inconsistent chemical compositions that lead to "uneven galvanizing," resulting in peeling coatings and high maintenance costs.
2. Using low-grade steel requires thicker, heavier sections to meet load requirements, which increases the "dead weight" of trailers and cranes, leading to higher fuel consumption and lower payload capacity.
We provide S355J2 steel with controlled Silicon (Si) and Phosphorus (P) content, specifically optimized for Hot-Dip Galvanizing (HDG). This ensures a uniform, high-adhesion zinc coating that provides 30+ years of maintenance-free service in coastal ports and solar mounting structures.
Stock Dimensions for S355J2 Channel steel UPN
UPN 80 U80×45×6×8
UPN 100 U100×50×6×8.5
UPN 120 U120×55×7×9
UPN 140 U140×60×7×10
UPN 160 U160×65×7.5×10.5
UPN 180 180×70×8×11
UPN 200 U200×75×8.5×11.5
UPN 220 U220×80×9×12.5
UPN 240 U240×85×9.5×13
UPN 260 U260×90×10×14
UPN 280 U280×95×10×15
UPN 300 U300×100×10×16
UPN 320 U320×100×14×17.5
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FAQ of S355J2 channel Beam
What is S355J2 material?
S355J2 is a medium tensile, low carbon manganese steel which is readily weldable and possess good impact resistance (also in sub-zero temperatures). This material is commonly supplied in the untreated or normalized condition. Machinability of this material is similar to that of mild steel.
What is the difference between S235JR and S355J2?
Mechanical properties are the core indicators that distinguish these two types of steel. The yield strength of S355J2H can reach up to 355 N/mm², and the tensile strength is 470-630MPa; the yield strength of S235JRH is up to 235 N/mm², and the tensile strength is in the range of 360-510MPa.
What is the equivalent of S355 J2?
The equivalent of S355J2 EN 10025-2 is ASTM A572 Grade 50, DIN ST52-3, JIS SM490YA, and GB Q355D, with similar high strength and low-temperature toughness for structural use. Gangsteel's high-quality plates ensure compliance for your projects. For more, explore our BS EN 10025-2 material grade guide.
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