Dimensions, mass and permissible variations of hot rolled steel sections
Dimensions and masses of H-shapes, I-beams, channels and angles.
Japanese Standards Association · Unverified confirm current edition and amendments
Technical Standards
The library distinguishes product standards (what the steel is), design standards (how members are designed) and fabrication standards (how steelwork is made and erected).
Product standards
Rolled steels for general structure (SS400 and others)
General structural steel grades SS400, SS490, SS540.
Japanese Standards Association · Unverified confirm current edition and amendments
Rolled steels for welded structure (SM400, SM490 …)
Weldable structural steel grades SM400, SM490, SM520.
Japanese Standards Association · Unverified confirm current edition and amendments
Rolled steels for building structure (SN400, SN490)
Building structural steel grades SN400A/B/C and SN490B/C with controlled yield ratio.
Japanese Standards Association · Unverified confirm current edition and amendments
Carbon steel tubes for general structure (STK)
Circular structural tubes STK400, STK490.
Applies to: STK
Japanese Standards Association · Unverified confirm current edition and amendments
Carbon steel square and rectangular tubes for general structure (STKR)
Square and rectangular structural tubes STKR400, STKR490.
Applies to: STKR
Japanese Standards Association · Unverified confirm current edition and amendments
Dimensions, mass and permissible variations of hot rolled steel plates, sheets and strip
Standard thicknesses and tolerances of hot-rolled plates.
Applies to: PL
Japanese Standards Association · Unverified confirm current edition and amendments
Design standards
Design Standard for Steel Structures (allowable stress and limit state design)
Design of steel building structures in Japan, used together with the Building Standard Law.
Architectural Institute of Japan · Unverified confirm current edition and amendments
Steel grades
| Grade | Standard | Product form | Thickness range → fy / fu (MPa) | Data |
|---|---|---|---|---|
| JP SM490A | JIS G 3106 | Sections and plates for welded structures | 0–16 mm: 325 / 490 16–40 mm: 315 / 490 40–75 mm: 295 / 490 75–100 mm: 295 / 490 | U |
| JP SN490B | JIS G 3136 | Sections and plates for building structures | 6–40 mm: 325 / 490 40–100 mm: 295 / 490 | U |
| JP SS400 | JIS G 3101 | Sections, bars and plates | 0–16 mm: 245 / 400 16–40 mm: 235 / 400 40–100 mm: 215 / 400 | U |
| JP STK400 | JIS G 3444 | Circular structural tubes | 0–40 mm: 235 / 400 | U |
| JP STKR400 | JIS G 3466 | Square and rectangular tubes | 0–40 mm: 245 / 400 | U |
| JP STKR490 | JIS G 3466 | Square and rectangular tubes | 0–40 mm: 325 / 490 | U |
Grade strengths are entered for reference and marked UNVERIFIED until checked against the current edition. Always use the mill certificate and the current standard for design.