C12×20.7

Metric Imperial

Use in Beam Calculator Open in Section Properties

Dimensions
WMass	30.8
dDepth	305
b_fFlange width	74.7
t_wWeb thickness	7.16
t_fFlange thickness	12.7
AArea	3,920
Major axis
I_xSecond moment of area	53.7
S_xElastic modulus	352
Z_xPlastic modulus	420
r_xRadius of gyration	117
y_topCentroid to top	152.5
y_botCentroid to bottom	152.5
Minor axis
I_ySecond moment of area	1.61
S_yElastic modulus	28.2
Z_yPlastic modulus	56.9
r_yRadius of gyration	20.2
Torsion and warping
JTorsion constant	154
C_wWarping constant	30.1

Material

Standard

Grade

ASTM A36

Material and nominal capacity of C12×20.7 in the grade picked
Capacity (nominal, no resistance or safety factors)
Steel type	Carbon
tThickness band	t up to 203 mm (8 in)
F_yYield strength, minimum	250
F_uTensile strength, minimum	400
EModulus of elasticity	200,000
GShear modulus	77,200
νPoisson's ratio	0.3
ρDensity	7,850
Flexure class, AISC 360 Table B4.1	Compact, bf/tf 5.9 (λp 10.7, λr 28.3)
P_yAxial yield, A·Fy	980
M_yYield moment, Sx·Fy	88
M_pPlastic moment, Zx·Fy	105

C12×20.7 dimensions and section properties | Kannamwar Engineering