Page 6 - square pipe
P. 6
SQUARE PIPE
Size and Properties
JIS G3466
Grade : STKR290
B
JIS G3466
T
H
SIAZES 19 x 19 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 0.82 0.64 0.42 0.42 0.72 0.72 0.44 0.44
1.4 0.94 0.73 0.47 0.47 0.71 0.71 0.50 0.50
1.7 1.10 0.87 0.53 0.53 0.70 0.70 0.56 0.56
2.0 1.26 0.99 0.59 0.59 0.68 0.68 0.62 0.62
% 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
