Page 9 - square pipe

SQUARE PIPE
Size and Properties
JIS G3466 , มอก.107-2561
Grade : STKR290 , STKR400
B
T
H
B
T
มอก. 107-2561 JIS G3466
H

SIAZES 25 x 25 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 1.11 0.87 1.03 1.03 0.96 0.96 0.82 0.82
1.4 1.27 1.00 1.16 1.16 0.95 0.95 0.93 0.93
1.5 1.35 1.06 1.22 1.22 0.95 0.95 0.98 0.98
1.6 1.43 1.12 1.28 1.28 0.94 0.94 1.02 1.02
1.7 1.51 1.19 1.34 1.34 0.94 0.94 1.07 1.07
1.8 1.59 1.25 1.39 1.39 0.94 0.94 1.11 1.11
2.0 1.74 1.36 1.49 1.49 0.93 0.93 1.19 1.19
2.3 1.95 1.53 1.63 1.63 0.91 0.91 1.30 1.30
2.5 2.09 1.64 1.71 1.71 0.91 0.91 1.37 1.37
2.8 2.28 1.79 1.82 1.82 0.89 0.89 1.46 1.46
3.2 2.53 1.98 1.94 1.94 0.88 0.88 1.55 1.55
% 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