High Strength SS490 Structural Angle Steel

SS490 is a high-strength carbon structural steel under the Japanese JIS G3101 standard, with a yield strength exceeding 285 MPa and a tensile strength between 490-610 MPa. This steel possesses good weldability and machinability, and is commonly used in welded structural components requiring high strength and good structural performance, such as bridges, ships, vehicles, and oil storage tanks. Shin Steel Industries can provide SS490 steel plates in AR, controlled-rolled, or normalized conditions.

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Description

Technical Parameters

The SS490 material, defined in the JIS G 3101 standard, is a structural hot rolled steel known for its reliability in tensile strength and its broad range of applications in various industries. In comparison with other structural steels, SS490 emerges superior due to its impressive tensile strength and durability. This steel offers significant advantages over traditional construction materials such as concrete and wood, boasting superior strength, flexibility, and longevity.

The adoption of SS490 steel has had a profound impact on the manufacturing industry, given its versatility and suitability for a multitude of applications. From a sustainability perspective, SS490 steel is commendable for its recyclability and energy-efficient production process. It contributes significantly towards the manufacturing sector's drive towards environmentally-friendly practices.

Developments and innovations in SS490 steel production are expected to further enhance its properties and expand its applications. Research is ongoing to improve its resistance to corrosion and increase its yield strength without compromising its ductility. These improvements could open up new possibilities for the use of SS490 steel in high-stress and corrosive environments.

Symbol of grade	Yield point or proof strength N/mm2				Tensile strength N/mm2	Elongation			Bendability
	Thickness a) mm					Thickness a) mm	Test piece	%	Bending angle	Inner radius	Test piecec)
	≤16	>16 ≤40	>40 ≤100	>100
SS490	≥285	≥275	≥255	≥245	490 to 610	≤5 in thickness of steel plates/sheets, strips in coil and flats	No. 5	≥19	180°	2.0 x thickness	No. 1
						>5 ≤16 in thickness of steel plates/sheets, strips in coil and flats	No. 1A	≥15
						>16 ≤50 in thickness of plates/sheets, strips in coil and flats	No. 1A	≥19
						>40 in thickness of plates/sheets and flats	No. 4	≥21 b)
						≤25 in diameter or distance across flats of bars	No.2	≥18	180°	2.0 x diameter or distance across flats	No.2

High Strength SS490 Structural Steel Plate

1. What is SS490 steel? What standard does it conform to?

SS490 is a general structural steel defined in JIS G 3101 (Japanese Industrial Standard).It is a carbon‑manganese, non‑alloy structural steel with good strength, weldability and formability, widely used for beams, columns, brackets, and general construction parts.

2. What is the yield strength of SS490? How does it compare with ordinary steels?

SS490 has a minimum yield strength of 295 MPa and tensile strength ranging from 490–610 MPa.Its strength is higher than SS400 and close to Chinese Q355 and European S355 series, making it suitable for medium‑load structural parts.

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