L – angles

L64x51x4.8

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 = 63.5d = 50.8t = 4.76t = 4.76
Cross-section, to scaledimensions in mm

Dimensions

Depthd
50.8mm
Widthb
63.5mm
Thicknesst
4.76mm
Distance k (design)kdes
11.1mm
Distance k (detailing)kdet
11.1mm

Mass and area

Mass per lengthm
4.2kg/m
Cross-sectional areaA
528mm²

Strong axis x–x

Moment of inertiaIx
0.21310⁶ mm⁴
Elastic section modulusSx
4.810³ mm³
Plastic section modulusZx
8.6710³ mm³
Radius of gyrationrx
20.1mm

Weak axis y–y

Moment of inertiaIy
0.12210⁶ mm⁴
Elastic section modulusSy
3.210³ mm³
Plastic section modulusZy
5.6910³ mm³
Radius of gyrationry
15.2mm

Principal axes

Moment of inertia, minor principal axisIz
0.061610⁶ mm⁴
Section modulus, minor principal axisSz
2.6710³ mm³
Radius of gyration, minor principal axisrz
10.8mm
Tangent of principal axis angletan α
0.628

Torsion and stability

Torsional constantJ
4.2910³ mm⁴
Warping constantCw
0.0010310⁹ mm⁶
Polar radius (shear center)r̄o
32mm

Centers

Centroidx̄
12.9mm
Centroidȳ
19.2mm
Plastic neutral axisxp
4.17mm
Plastic neutral axisyp
8.1mm

Slenderness ratios

Wall slendernessb/t
13.3

Equivalents in other standards