42.4 mm OD × 3.2 mm

circular hollow section — 3.09 kg per metre, 3.94 cm² cross-sectional area. IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes.

Mass per metre: 3.09kg/m
Sectional area: 3.94cm²
Outside diameter: 42.4mm
Wall thickness: 3.2mm

Circular Hollow Sections. Reproduced as printed in IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes.

42.4 mm OD × 3.2 mm section properties

As printed in IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes. 42.4 mm outside diameter, 3.2 mm wall thickness. Units are shown on every row, because the two standards on this site use different ones for the radius of gyration.

Dimensions

Nominal bore NB	32	mm
Outside diameter OD	42.4	mm
Wall thickness t	3.2	mm

Mass and area

Mass per metre M	3.09	kg/m
Sectional area A	3.94	cm²

Major axis (z-z)

Second moment of area I	7.62	cm⁴
Section modulus Z	3.59	cm³
Radius of gyration r	1.39	cm
Square of the radius of gyration r²	1.93	cm²

What a length of 42.4 mm OD × 3.2 mm weighs

Total weight is the mass per metre multiplied by the length and the number of pieces. Ten pieces of 42.4 mm OD × 3.2 mm at six metres each is 3.09 × 6 × 10 = 185 kg. There is nothing else to it — the standard publishes the mass, so no one needs to compute it from the area.

You can check that mass against the area on this page: 3.94 cm² of steel at 7 850 kg/m³ is 3.09 kg/m. Every row in this dataset was checked that way, which is how the contradictions flagged on some of these pages were found.

Work it out for your own lengths and quantities →

Common questions about 42.4 mm OD × 3.2 mm

What is the weight of 42.4 mm OD × 3.2 mm per metre?

IS 1161 : 2014 gives 42.4 mm OD × 3.2 mm a mass of 3.09 kg per metre. Its printed cross-sectional area of 3.94 cm² agrees: 3.94 cm² of steel at 7 850 kg/m³ works out at 3.09 kg per metre.

How much does a 6 m length of 42.4 mm OD × 3.2 mm weigh?

18.54 kg. Mass per metre times length: 3.09 × 6. Ten such pieces come to 185 kg.

Free to browse. Log in to unlock the full Rate Analysis of every Civil and Electrical item in the latest CPWD DSR.

Where these figures come from. IS 1161:2014 Table 1 - Steel Tubes for Structural Purposes Section properties are facts published in the standards, and they are reproduced here as printed. Where a standard contradicts itself, both of its figures are shown and neither is corrected.

What is ours. The selection and arrangement of these tables, the checks run against them, and the findings those checks produced — which rows disagree with themselves, which figures were superseded by amendment, and which could not be read — are QuickBOQ’s work, and so is this wording. Quote the numbers freely; they belong to everyone. Copying the compilation and the commentary is a different thing, and we would rather you linked to it.