65 x 50 x 5 UA

Unequal Angle · AS/NZS 3679.1 · Australia / New Zealand

65 x 50 x 5 UA is an unequal angle with 65 × 50 mm legs, 4.6 mm thick, weighing 4.0 kg/m. The dimensions below are the published AS/NZS 3679.1 values; the drawing is generated from them.

Unequal Angles put the longer leg where connection or stiffness demands it; like every angle they buckle about tilted principal axes, and the principal pair is published here.

65 x 50 x 5 UA drawn to scale. Save as SVG DXF

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Published dimensions

Property	Metric	Imperial
Leg length, d	65 mm	2.56 in
Second leg, b	50 mm	1.97 in
Thickness, t	4.6 mm	0.181 in
Mass per metre	4.0 kg/m	2.7 lb/ft
Area, A	512 mm²	0.79 in²
Second moment, Ix	214,900 mm⁴	0.5 in⁴
Second moment, Iy	110,800 mm⁴	0.3 in⁴
Principal maximum, I_max	267,000 mm⁴	0.6 in⁴
Principal minimum, I_min	58,700 mm⁴	0.1 in⁴

Derived section properties

Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For 65 x 50 x 5 UA the computed area agrees with the published value to 0.06% and I_x to 0.05%. Where a value is also published, the published one above is the one to quote.

Property	Value
Elastic modulus, Z_x	4,753 mm³
Elastic modulus, Z_y	2,945 mm³
Plastic modulus, S_x	8,705 mm³
Plastic modulus, S_y	5,324 mm³
Radius of gyration, rx	20.5 mm
Radius of gyration, ry	14.7 mm
Principal maximum, I_max (derived)	267,124 mm⁴
Principal minimum, I_min (derived)	58,698 mm⁴
Principal axis angle, θ_p	30.0°

Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed.

Neighbouring sizes

Heavier75 x 50 x 5 UA4.4 kg/m

Where these numbers come from

Published AS/NZS 3679.1 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API