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JIS G3466 STKR400 Square and rectangular tube
JIS G3466 STKR490 Square and rectangular tube
JIS G3466 STKR400 Square hollow section
JIS G3466 STKR400 Rectangular hollow section
JIS G3466 STKR490 Square hollow section
JIS G3466 STKR490 Rectangular hollow section
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. | |||
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