Steel Beam Sizes / UK / RHS / RHS 500×300×12.5

RHS 500×300×12.5 Dimensions, Weight and Section Properties

UK Rectangular hollow sections · v2023.11

RHS 500×300×12.5: 151 kg/m weight. View the full dimensions and properties in imperial and metric units below.

Analyze in Beam Calculator Back to RHS

Need this steel supplied or fabricated?

Request project pricing for delivery in the United States or Canada.

Get a steel quote →

Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

RHS 500×300×12.5 dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 101.47 lb/ft 151.00 kg/m
Height 19.69 in 500.00 mm
Width 11.81 in 300.00 mm
t 0.492 in 12.500 mm
Area 29.76 in² 19,200.00 mm²
Ix 1,580.85 in⁴ 658,000,000 mm⁴
Iy 715.95 in⁴ 298,000,000 mm⁴
Sx 160.49 in³ 2,630,000 mm³
Sy 120.83 in³ 1,980,000 mm³
Zx 195.28 in³ 3,200,000 mm³
Zy 136.69 in³ 2,240,000 mm³
rx 7.28 in 185.00 mm
ry 4.92 in 125.00 mm
J 1,547.22 in⁴ 644,000,000 mm⁴

Alternatives

Useful nearby sections

Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus RHS 500×300×12.5.

Lighter in Rectangular hollow sections

RHS 400×300×14.2

Weight
148.0 kg/m (-2.0%)
Depth
400.0 mm (-20%)
Ix
430,000,000 mm⁴ (-35%)

Heavier in Rectangular hollow sections

RHS 400×300×16

Weight
166.0 kg/m (+9.9%)
Depth
400.0 mm (-20%)
Ix
475,000,000 mm⁴ (-28%)

Another Iₓ option in Rectangular hollow sections

RHS 500×200×16

Weight
166.0 kg/m (+9.9%)
Depth
500.0 mm (0.0%)
Ix
630,000,000 mm⁴ (-4.3%)
Analyze in Beam Calculator Compare in RHS finder

Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology