Japan · JISC · SteelCurrent

JIS G 3106

Rolled steels for welded structure

SM400, SM490, SM490Y, SM520 and SM570 with A/B/C impact qualities.

In JIS the number is the minimum tensile strength (SM490 → 490 N/mm²), not the yield.

Grades on Matipedia

JIS G 3106

SM520

JIS grade whose guaranteed yield actually matches S355: 365 MPa up to 16 mm.

ReH

≥ 365 MPa

Rm

520–640 MPa

Corroborated

1

Single source

2

JIS G 3106

SM490

Japanese welded-structure steel; the 490 is minimum tensile strength, yield is 325 MPa.

ReH

≥ 325 MPa

Rm

490–610 MPa

Confirmed

1

Corroborated

1

Single source

1

Disagreements explained

1