Page 28 - square pipe

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

มอก. 107-2561

SIAZES 200 x 200 x t
H x A x C
( mm. )

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
4.00 30.95 24.29 1,966.32 1,966.32 7.97 7.97 196.63 196.63
4.50 34.67 27.21 2,189.49 2,189.49 7.95 7.95 218.95 218.95
5.00 38.36 30.11 2,407.83 2,407.83 7.92 7.92 240.78 240.78
6.00 45.63 35.82 2,830.30 2,830.30 7.88 7.88 283.03 283.03
7.00 52.78 41.43 3,234.23 3,234.23 7.83 7.83 323.42 323.42
8.00 59.79 46.94 3,620.11 3,620.11 7.78 7.78 362.01 362.01
9.00 66.68 52.34 3,988.40 3,988.40 7.73 7.73 398.84 398.84
10.00 73.43 57.64 4,339.58 4,339.58 7.69 7.69 433.96 433.96
12.00 86.53 67.93 4,992.49 4,992.49 7.60 7.60 499.25 499.25
% 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