L – angles

L51x51x4.8

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xyb = 50.8d = 50.8t = 4.76t = 4.76
Cross-section, to scaledimensions in mm

Dimensions

Depthd
50.8mm
Widthb
50.8mm
Thicknesst
4.76mm
Distance k (design)kdes
11.1mm
Distance k (detailing)kdet
11.1mm

Mass and area

Mass per lengthm
3.6kg/m
Cross-sectional areaA
466mm²

Strong axis x–x

Moment of inertiaIx
0.11310⁶ mm⁴
Elastic section modulusSx
3.0810³ mm³
Plastic section modulusZx
5.5410³ mm³
Radius of gyrationrx
15.5mm

Weak axis y–y

Moment of inertiaIy
0.11310⁶ mm⁴
Elastic section modulusSy
3.0810³ mm³
Plastic section modulusZy
5.5410³ mm³
Radius of gyrationry
15.5mm

Principal axes

Moment of inertia, minor principal axisIz
0.045410⁶ mm⁴
Section modulus, minor principal axisSz
2.2510³ mm³
Radius of gyration, minor principal axisrz
9.88mm
Tangent of principal axis angletan α
1

Torsion and stability

Torsional constantJ
3.8310³ mm⁴
Warping constantCw
0.00068210⁹ mm⁶
Polar radius (shear center)r̄o
27.7mm
Flexural constantH
0.63

Centers

Centroidx̄
14.2mm
Centroidȳ
14.2mm
Plastic neutral axisxp
4.6mm
Plastic neutral axisyp
4.6mm

Slenderness ratios

Wall slendernessb/t
10.6

Equivalents in other standards