L – angles

L51x51x3.2

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 = 3.18t = 3.18
Cross-section, to scaledimensions in mm

Dimensions

Depthd
50.8mm
Widthb
50.8mm
Thicknesst
3.18mm
Distance k (design)kdes
9.53mm
Distance k (detailing)kdet
9.53mm

Mass and area

Mass per lengthm
2.4kg/m
Cross-sectional areaA
317mm²

Strong axis x–x

Moment of inertiaIx
0.078710⁶ mm⁴
Elastic section modulusSx
2.1110³ mm³
Plastic section modulusZx
3.7710³ mm³
Radius of gyrationrx
15.7mm

Weak axis y–y

Moment of inertiaIy
0.078710⁶ mm⁴
Elastic section modulusSy
2.1110³ mm³
Plastic section modulusZy
3.7710³ mm³
Radius of gyrationry
15.7mm

Principal axes

Moment of inertia, minor principal axisIz
0.031510⁶ mm⁴
Section modulus, minor principal axisSz
1.6310³ mm³
Radius of gyration, minor principal axisrz
9.93mm
Tangent of principal axis angletan α
1

Torsion and stability

Torsional constantJ
1.2210³ mm⁴
Warping constantCw
0.00021210⁹ mm⁶
Polar radius (shear center)r̄o
27.9mm
Flexural constantH
0.63

Centers

Centroidx̄
13.6mm
Centroidȳ
13.6mm
Plastic neutral axisxp
3.12mm
Plastic neutral axisyp
3.12mm

Slenderness ratios

Wall slendernessb/t
16

Equivalents in other standards