L – angles

L64x51x6.4

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 = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
50.8mm
Widthb
63.5mm
Thicknesst
6.35mm
Distance k (design)kdes
12.7mm
Distance k (detailing)kdet
12.7mm

Mass and area

Mass per lengthm
5.4kg/m
Cross-sectional areaA
690mm²

Strong axis x–x

Moment of inertiaIx
0.27310⁶ mm⁴
Elastic section modulusSx
6.2410³ mm³
Plastic section modulusZx
11.310³ mm³
Radius of gyrationrx
19.9mm

Weak axis y–y

Moment of inertiaIy
0.15510⁶ mm⁴
Elastic section modulusSy
4.1510³ mm³
Plastic section modulusZy
7.4410³ mm³
Radius of gyrationry
15mm

Principal axes

Moment of inertia, minor principal axisIz
0.079910⁶ mm⁴
Section modulus, minor principal axisSz
3.4910³ mm³
Radius of gyration, minor principal axisrz
10.7mm
Tangent of principal axis angletan α
0.624

Torsion and stability

Torsional constantJ
9.7810³ mm⁴
Warping constantCw
0.0023310⁹ mm⁶
Polar radius (shear center)r̄o
31.8mm

Centers

Centroidx̄
13.5mm
Centroidȳ
19.8mm
Plastic neutral axisxp
5.44mm
Plastic neutral axisyp
9.14mm

Slenderness ratios

Wall slendernessb/t
10

Equivalents in other standards