Hot Finished Rectangular Hollow Sections - 400x150x6.3

Hot-finished rectangular hollow sections (RHS) are flat-sided, box-shaped steel tubes manufactured at very high temperatures to ensure a uniform metal structure. Shaping the steel while it is red-hot eliminates the internal stresses found in cold-formed alternatives, making these tubes highly reliable under heavy loads and easier to weld or cut. Their rectangular profile provides superior bending strength along their deeper axis, while the flat faces allow for quick and easy connections to other structural parts. These robust tubes are widely used in demanding engineering applications, such as heavy bridge trusses, building columns, and large-scale industrial frameworks.

Dimensions

PropertyValue
D mm400
B mm150
t mm6.3
kg/m52.8
A cm267.3

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Ratios for Local Buckling - d/t(1)60.5
Ratios for Local Buckling - b/t(1)20.8
Second Moment of Area (x-x) - cm413300
Second Moment of Area (y-y) - cm42850
Radius of Gyration (x-x) - cm14
Radius of Gyration (y-y) - cm6.51
Elastic Modulus (x-x) - cm3663
Elastic Modulus (y-y) - cm3380
Plastic Modulus (x-x) - cm3836
Plastic Modulus (y-y) - cm3418
Torsional Constants - J cm47600
Torsional Constants - C cm3673
Surface Area (Per Metre) - m21.08
Surface Area (Per Tonne) - m220.5

Full sortable table: Properties table for this category