S12×31.8 dimensions and section properties | Kannamwar Engineering

S12×31.8

Metric Imperial

Use in Beam Calculator Open in Section Properties

Dimensions
WWeight	31.8
dDepth	12
b_fFlange width	5
t_wWeb thickness	0.35
t_fFlange thickness	0.544
AArea	9.31
Major axis
I_xSecond moment of area	217
S_xElastic modulus	36.2
Z_xPlastic modulus	41.8
r_xRadius of gyration	4.83
y_topCentroid to top	6
y_botCentroid to bottom	6
Minor axis
I_ySecond moment of area	9.33
S_yElastic modulus	3.73
Z_yPlastic modulus	6.44
r_yRadius of gyration	1
Torsion and warping
JTorsion constant	0.878
C_wWarping constant	306

Material

Standard

Grade

ASTM A36

Material and nominal capacity of S12×31.8 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	36
F_uTensile strength, minimum	58
EModulus of elasticity	29,000
GShear modulus	11,200
νPoisson's ratio	0.3
ρDensity	490
Flexure class, AISC 360 Table B4.1	Compact, bf/2tf 4.6 (λp 10.7, λr 28.3)
P_yAxial yield, A·Fy	335.2
M_yYield moment, Sx·Fy	108.6
M_pPlastic moment, Zx·Fy	125.4