SM490YB

Actually based on JIS G3106:2020 Clause 5 Table 2 and Normative Annex JA Table JA.1; composition is heat analysis mass fraction wt%; The original text of the 2024 edition has not yet been verified; compliance of the new edition shall not be confirmed based on this. Applicable to hot-rolled steel for welded structures; Check the thickness of plates, strips, sections and flat bars separately against Table 1; hot-extruded sections are also subject to Annex JC. This does not constitute a supply guarantee for cold-heading wire.. Please select the thickness and whether it belongs to thick steel plates agreed upon by both the supplier and the purchaser; Ordinary thickness Table 2 and agreed thick plate Table JA.1 shall not be used interchangeably. Dashes and unlisted elements in the table do not mean zero content; additions may be made where necessary.; Do not calculate the complete carbon equivalent based on missing items. For SM400A, evaluate Mn against Mn≥2.5×C using measured C from the same heat; do not use the C upper limit to invent a fixed Mn lower limit.. The upper limit of Mn for agreed thick plates in Annex JA must be stipulated by both the supplier and the purchaser; For SM400B, only Mn≥0.60% is additionally provided; the 1.50% upper limit for ordinary thickness shall not be used. Ceq in this standard uses the JIS-specific formula; The IIW/CEV, Pcm, and CET tools on the website are for engineering estimation within the noted applicable range only, and do not replace the heat treatment, thickness, and agreement requirements of this standard. The JSA corrigendum dated 2021-5 changed explanatory text; it did not change the chemical limits in Table 2 or Table JA.1 reviewed in this batch..

Actually based on JIS G3106:2020 Clause 5 Table 2 and Normative Annex JA Table JA.1; composition is heat analysis mass fraction wt%; The original text of the 2024 edition has not yet been verified; compliance of the new edition shall not be confirmed based on this. Applicable to hot-rolled steel for welded structures; Check the thickness of plates, strips, sections and flat bars separately against Table 1; hot-extruded sections are also subject to Annex JC. This does not constitute a supply guarantee for cold-heading wire.. Please select the thickness and whether it belongs to thick steel plates agreed upon by both the supplier and the purchaser; Ordinary thickness Table 2 and agreed thick plate Table JA.1 shall not be used interchangeably. Dashes and unlisted elements in the table do not mean zero content; additions may be made where necessary.; Do not calculate the complete carbon equivalent based on missing items. For SM400A, evaluate Mn against Mn≥2.5×C using measured C from the same heat; do not use the C upper limit to invent a fixed Mn lower limit.. The upper limit of Mn for agreed thick plates in Annex JA must be stipulated by both the supplier and the purchaser; For SM400B, only Mn≥0.60% is additionally provided; the 1.50% upper limit for ordinary thickness shall not be used. Ceq in this standard uses the JIS-specific formula; The IIW/CEV, Pcm, and CET tools on the website are for engineering estimation within the noted applicable range only, and do not replace the heat treatment, thickness, and agreement requirements of this standard. The JSA corrigendum dated 2021-5 changed explanatory text; it did not change the chemical limits in Table 2 or Table JA.1 reviewed in this batch..

A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.

A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.

A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.

A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.