Page 26 - square pipe

SQUARE PIPE
Size and Properties
มอก.107-2561
Grade : STRK400
B
T
H
มอก. 107-2561

SIAZES 150 x 150 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
2.3 13.45 10.56 486.20 486.20 6.01 6.01 64.83 64.83
2.5 14.59 11.45 525.60 525.60 6.00 6.00 70.08 70.08
2.8 16.28 12.78 583.87 583.87 5.99 5.99 77.85 77.85
3.2 18.53 14.54 660.01 660.01 5.97 5.97 88.00 88.00
3.6 20.75 16.29 734.40 734.40 5.95 5.95 97.92 97.92
4.0 22.95 18.01 807.07 807.07 5.93 5.93 107.61 107.61
4.5 25.67 20.15 895.53 895.53 5.91 5.91 119.40 119.40
5.0 28.36 22.26 981.37 981.37 5.88 5.88 130.85 130.85
102.57 6.0 33.63 26.40 1,145.42 1,145.42 5.84 5.84 152.72 152.72
127.83 8.0 43.79 34.38 1,444.22 1,444.22 5.74 5.74 192.56 192.56
139.00 9.0 48.68 38.21 1,579.66 1,579.66 5.70 5.70 210.62 210.62
10.0 53.43 41.94 1,706.25 1,706.25 5.65 5.65 227.50 227.50
12.0 62.53 49.09 1,934.25 1,934.25 5.56 5.56 257.90 257.90
% 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