EN 10210-3 Hot-Finished Steel Structural Hollow Sections

EN 10210-3 Hot-Finished Steel Structural Hollow Sections

EN 10210-3 Hot-Finished Steel Structural Hollow Sections are premium-grade, hot-formed steel profiles designed for demanding structural applications. These hollow sections are manufactured in compliance with the European standard EN 10210-3 and offer exceptional strength, stability, and versatility. They are ideal for various construction and engineering projects, including building frameworks, bridges, and infrastructure where high-performance steel is required. These hollow sections provide outstanding mechanical properties, including high yield strength, tensile strength, and impact resistance, making them perfect for applications subjected to heavy loads and harsh conditions. With their uniform surface finish and precise dimensions, EN 10210-3 hollow sections minimize the need for further processing, offering cost-effective solutions without compromising performance.

Chemical Composition of EN 10210-3 Hot-Finished Steel Structural Hollow Sections

Steel grade	C max.	Si max.	Mn max.	P max.	S max.	Cr max.	Mo max.	Ni max.	Al total min.	Cu max.	Nb max.	Ti max.	V max.	N max.
S355MH	0.16	0.50	1.70	0.030	0.025	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025
S355MLH	0.16	0.50	1.70	0.025	0.020	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025
S420MH	0.16	0.50	1.70	0.030	0.025	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025
S420MLH	0.16	0.50	1.70	0.025	0.020	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025
S460MH	0.16	0.60	1.70	0.030	0.025	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025
S460MLH	0.16	0.60	1.70	0.025	0.020	0.30	0.20	0.80	0.020	0.55	0.090	0.060	0.12	0.025

Steel grade	C max.	Si max.	Mn max.	P max.	S max.	Cr max.	Mo max.	Ni max.	Cu max.	Nb max.	Ti max.	V max.	W max.	Zr max.	N max.	B max.
S460QH	0.25	0.80	1.70	0.025	0.015	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050
S460QLH	0.25	0.80	1.70	0.020	0.010	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050
S620QH	0.25	0.80	1.70	0.025	0.015	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050
S620QLH	0.25	0.80	1.70	0.020	0.010	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050
S690QH	0.25	0.80	1.70	0.025	0.015	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050
S690QLH	0.25	0.80	1.70	0.020	0.010	1.50	0.70	2.00	0.50	0.06	0.05	0.16	1.50	0.15	0.020	0.0050

Mechanical Properties of EN 10210-3 Hot-Finished Steel Structural Hollow Sections

Grade	Minimum Yield Strength (MPa)			Tensile Strength (MPa)	Elongation A(%)
	For specified thickness				For specified thickness
	≤ 16	> 16 ≤ 40	> 40 ≤ 65	≤ 65	Longitudinal	Transverse
S355MH	355	345	355	450 to 610	22	19
S355MLH	355	345		450 to 610	22	19
S420MH	420	400	390	500 to 660	19	17
S420MLH	420	390		500 to 660	19	17
S460MH	460	440	430	530 to 720	17	15
S460MLH	460	430		530 to 720	17	15

Steel Grade	Minimum Yield Strength Re​H (MPa)			Tensile Strength Rm​ (MPa)			Minimum Elongation A (%)
	For Specified Thickness (mm)			For Specified Thickness (mm)			For Specified Thickness ≤ 65 mm
	≤ 16	> 16 ≤ 40	> 40 ≤ 65	≤ 16	> 16 ≤ 40	> 40 ≤ 65	Long.	Trans.
S460QH	460	440	400	550 to 720	550 to 720	500 to 670	17	15
S460QLH	460	440	400
S620QH	620	580	560	700 to 890	700 to 890	650 to 830	15	13
S620QLH	620	580	560
S690QH	690	650	630	770 to 940	720 to 930	710 to 900	14	12
S690QLH	690	650	630

Carbon Equivalent

Steel grade	Maximum CEV for specified thicknesses
	16 mm < t ≤ 65 mm
S355MH	0.40
S355MLH	0.40
S420MH	0.44
S420MLH	0.45
S460MH	0.46
S460MLH	0.46

Steel Grade	Maximum CEV
S460QH	0.47
S460QLH
S620QH	0.65
S620QLH
S690QH	0.65
S690QLH

Specifications

Standard	EN 10210-3 Hot-Finished Steel Structural Hollow Sections
Steel Grade/Material	S355MH, S355MLH, S420MH, S420MLH, S460MH, S460MLH, S460QH, S460QLH, S620QH, S620QLH, S690QH, S690QLH
OEM service	Provided
Dimensions	Circular Hollow Section Dimensions: O.D 21.3-1219mm THK: 2.3-25mm Square Hollow Section Dimensions: O.D 40*40mm-400*400mm THK: 2.6-20mm Rectangular Hollow Section Dimensions: O.D 50*30-500*300mm THK: 2.6-23.5mm
Length	5.8-16m or OEM
Packing	Plain/Beveled Ends, Small diameters are bundled, large diameters are loosely packed.
Surface Treatment	Bare, Oiled, or Black Painted
Section Shape	Round, Square, or Rectangular
Technique	Seamless hot rolled
Place of Origin	Made in China
MOQ	25 ton/size
Transportation	Railway, By Sea

Applications

Construction and Infrastructure
Buildings: Used in structural frameworks, columns, beams, and trusses for residential, commercial, and industrial buildings.
Bridges: Applied in bridge components such as girders, supports, and other load-bearing sections.
Railway and Road Projects: Found in overpasses, underpasses, and railway station frameworks.

Mechanical Engineering
Heavy Machinery: Structural supports in cranes, excavators, and other heavy machinery requiring robust materials.
Industrial Equipment: Frameworks for machines, storage racks, and conveyor systems.

Offshore and Marine Applications
Offshore Platforms: Used in oil and gas platforms for structural stability in harsh marine environments.
Shipbuilding: Components in ship superstructures, masts, and support systems.

Renewable Energy
Wind Turbines: Foundations and structural towers for wind energy systems.
Solar Panel Frames: Support structures for photovoltaic systems.

Transportation
Automotive and Railway: Frames and supports for vehicles and railway carriages.
Airport Structures: Passenger terminals and aircraft hangars.

Industrial and Commercial Applications
Storage Tanks: Structural elements in tanks and silos for liquids or bulk materials.
Piping Supports: These are used to support pipelines in industrial facilities.
Warehouse Racks: Strong and lightweight storage systems.

High-Risk and Extreme Conditions
Seismic Zones: Structures in earthquake-prone areas due to their excellent strength and flexibility.
Fire-Resistant Applications: Preferred in projects requiring fire resistance, as hot-finished sections maintain integrity at high temperatures.

Architectural Applications
Aesthetic Structures: These are used in architectural features due to smooth surface finishes and the ability to create complex geometries.
Glass Facades: Supporting frameworks in high-rise glass structures.