JIS G3466 Carbon steel square tube
JIS G3466 carbon steel square tube is used in civil construction and other structural buildings. Manufacturing methods can form welded steel pipe (resistance welded, forge welded or automatic arc welded) or seamless pipe into a square cross-sectional shape. JIS G3466 carbon steel square tubes shall be manufactured without heat treatment.
JIS G3466 Carbon steel square and rectangular tubes for general structure
JIS G3466 specifies square steel pipes (hereafter referred to as square steel pipes) used for structures such as civil engineering and construction.
STKR 400, STKR 490 Pipe Size:
Grade: STKR 400, STKR 490
Square Size: 40*40mm-350*350mm
Rectangular Size: 20*50mm-200*400mm
Wall Thickness: 1.6-12mm
Chemical Composition:
|
Designation of grade
|
Chemical Composition
|
| C |
Si |
Mn |
P |
S |
| STKR 400 |
0.25 max. |
- |
- |
0.040 max. |
0.040 max. |
| STKR 490 |
0.18 max. |
0.55 max. |
1.50 max. |
0.040 max. |
0.040 max. |
Mechanical Property:
|
Designation of grade
|
| Tensile strength
N/㎟{kgf/㎟}
|
Yield point or proof stress
N/㎟{kgf/㎟}
|
Elongation %
(No.5 test piece)
|
| STKR 400 |
400 {41} min. |
245 {25} min. |
23 min. |
| STKR 490 |
490 {50} min. |
325 {33} min. |
23 min. |
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