JIS G3106 SM490YA/YB H Beam
GNEE Steel (China) is a leading supplier of SM490YA/YB H-beams, offering these beams in a wide range of sizes at competitive prices and with ample stock. Custom orders can include specific lengths, coatings or additional testing (e.g. ultrasonic testing).
Common sizes for SM490YA/YB H-beams include sizes from 100×100 mm to 1000×300 mm, with flange and web thicknesses tailored to specific engineering needs.
Standard: JIS G3106 - Rolled steel for welded structures
Category: High Strength Low Alloy Steel (HSLA)
Steel grades: SM490YA and SM490YB
SM490YA: Higher yield strength, no mandatory impact test required.
SM490YB: Higher yield strength, impact test at 0°C required.
Form: H-beam (also available in plates, sheets or other shapes, but H-beam and plates are most common).
Uses: Designed for welded structural applications requiring enhanced strength and durability.
Chemical Composition
| Element | SM490YA (Max %) | SM490YB (Max %) |
|---|---|---|
| Carbon (C) | 0.20 | 0.20 |
| Silicon (Si) | 0.55 | 0.55 |
| Manganese (Mn) | 1.65 | 1.65 |
| Phosphorus (P) | 0.035 | 0.035 |
| Sulfur (S) | 0.035 | 0.035 |
Mechanical Properties
| Property | SM490YA | SM490YB |
|---|---|---|
| Yield Strength (min) | 365 MPa | 365 MPa |
| Tensile Strength | 490–610 MPa | 490–610 MPa |
| Elongation (min) | 15% (t ≤ 16 mm) | 15% (t ≤ 16 mm) |
| Impact Test | Not required | 27 J at 0°C |
Physical properties of H-beams
SM490YA/YB H-beams are hot rolled and have the following characteristics:
High bending resistance: Effectively resists bending in all directions.
High load-bearing capacity: Ideal for supporting heavy loads in structural frames.
Construction efficiency: Simplifies assembly and reduces material usage, reducing costs.
Applications
SM490YA/YB H-beams are widely used in applications requiring high strength, good weldability and structural integrity:
Bridges: Due to their high strength, long span design with fewer support beams.
Buildings: Frames for high-rise buildings, warehouses and industrial facilities.
Ships: Structural components in shipbuilding.
Construction equipment: Cranes, booms and earthmoving machinery.
| Model Number |
Q235B/C/D Q345B/C/D/E Q390B/C/D/E Q420B/C/D/E Q460/C/D/E Q500/C/D/E SS400 SM490A/B SN400A/B SN490B S235JR/J0 S275JR/J0/J2 S355JR/J0/J2 S355K2 S450J0 S355M/L S460M S355J0WP/J2WP S355J0W/J2W/K2W |
| Application | Industry/Chemical Equipment |
| Welding Line Type | Welding |
| Processing Service | Bending, Punching, Cutting, Moulding |
| Length | 6000mm 9000mm 12000mm or Customized |
| Technique | Hot Rolled Cold Rolled |
| Payment terms | L/C T/T (30%DEPOSIT) |
| Process method | Standard |
GNEE Steel H Beam Steel Manufacturer
GNEE Steel was established in 2008, our main products are section steel, angle steel, flat steel, wear-resistant steel, etc. We have established long-term cooperative relations with well-known steel mills and are happy to provide you with the best prices and product suggestions. You are welcome to visit our company.
