Page 14 - square pipe

SQUARE PIPE
Size and Properties
JIS G3466 , มอก.107-2561
Grade : STKR400
B
T
H
B
T
มอก. 107-2561 JIS G3466
H

SIAZES 40 x 40 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 1.83 1.43 4.53 4.53 1.58 1.58 2.26 2.26
1.4 2.11 1.66 5.17 5.17 1.57 1.57 2.59 2.59
1.7 2.53 1.99 6.09 6.09 1.55 1.55 3.05 3.05
2.0 2.94 2.31 6.94 6.94 1.54 1.54 3.47 3.47
2.3 3.33 2.62 7.74 7.74 1.52 1.52 3.87 3.87
2.5 3.59 2.82 8.23 8.23 1.51 1.51 4.12 4.12
2.8 3.96 3.11 8.93 8.93 1.50 1.50 4.47 4.47
3.2 4.45 3.49 9.78 9.78 1.48 1.48 4.89 4.89
4.0 5.35 4.20 11.22 11.22 1.45 1.45 5.61 5.61
% 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