Page 5 - square pipe

SQUARE PIPE
Size and Properties
JIS G3466
Grade : STKR290

B
JIS G3466
T
H

SIAZES 18 x 18 x t
H x A x C
( mm. )

Modulus of Section Thickness Section Area Weight Moment of inertia Radious of Gyration Modulus of Section
( Unit : mm ) ( Unit : cm .) 2 ( Unit : kg./m.) ( Unit : cm .) 4 ( Unit : cm.) ( Unit : cm .) 3
t Area cm 2 kg./m l x l y i x i y z x z y
1.2 0.77 0.60 0.35 0.35 0.68 0.68 0.39 0.39
1.4 0.88 0.69 0.39 0.39 0.67 0.67 0.44 0.44
1.6 0.98 0.77 0.43 0.43 0.66 0.66 0.48 0.48
1.7 1.03 0.81 0.44 0.44 0.66 0.66 0.49 0.49
2.0 1.18 0.92 0.49 0.49 0.64 0.64 0.54 0.54
% Chemical Composition (Max) Mechanical Properties (Min)
Grade
C Si Mn P S Yield Strength Tensile Strength Elongation
MPa
MPa
%
STKR290 - - - 0.050 0.050 - 290 -
STKR400 0.25 - - 0.040 0.040 245 400 23
STKR490 0.18 0.55 1.50 0.040 0.040 325 490 23

Value series