JIS G3466 Carbon steel square and rectangular tubes for general structure.
JIS G3466 STKR400 chemical composition
|
Grade |
C |
Si |
Mn |
P |
S |
|
STKR400 |
≤0.25 |
- |
- |
≤0.04 |
≤0.04 |
JIS G3466 STKR400 mechanical property
|
Grade |
Yield strength MPa |
Tensile strength MPa |
Elongation % |
|
STKR400 |
≥400 |
≥245 |
≥23 |
The tolerances on dimensions are established in accordance with JIS G 3466.
| Characteristics | Tolerances | ||
| Outside dimensions of side |
(H,B 100mm)
|
 1.5mm
|
|
| H : Longest side |
(100mm H,B)
|
1.5%
|
|
| B : Shortest side | |||
| Wall thickness(T) |
(T3mm)
|
0.3mm
|
|
|
(3mmT)
|
10% in thickness
|
||
| Unevenness of the flat portions of each side |
(H,B100mm)
|
0.5mm
|
|
|
(100mmH,B)
|
0.5%
|
||
| Squareness of sides |
90 1.5
|
||
| Corner dimension(S) |
S3T
|
||
| Straightness | 0.3% in total length | ||
| Length | 0, +50mm (Private standard tolerance) | ||
|
NOTE 1)The outside dimensions are measured across the flats at positions at least 50mm from the end of the HSS. |
|||
