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You are here: Home- NewsWhat is JIS G3106 SM400B Steel? Dimensional Characteristics of SM400B steel

What is JIS G3106 SM400B Steel? Dimensional Characteristics of SM400B steel

Posted:2016/11/11 3:36:48

What is JIS G3106 SM400B Steel? Dimensional Characteristics of SM400B steel

JIS G3106 SM400B Steel has low yield and tensile strength and is supplied with a variety of treatments, SM400B steel plates are usually supplied in control rolled delivery condition. SM400B is commonly used in the engineering and construction industry.

The Chemical Composition of SM400B Steels:

JIS G3106 defines the percentage of chemical composition of SM400B steels as under:
Maximum Carbon (C) percentage is 0.20.
Maximum Manganese (Mn) percentage is 1.5 and starts from 0.6 percent.
Maximum percentage of Phosphorous (P) is 0.035.
Maximum percentage of Sulphur (S) is 0.035.
Maximum percentage of Silicon (Si) is 0.35.
Remaining is iron (Fe) percentage and with few negligible impurities.

Mechanical Properties of SM400B Steels:

The tensile strength of the SM400B Steels is expressed in Newton per millimeters and it must be at-least 400 N/mm2 (MPa) and maximum can be 510 N/mm2 (MPa). The yield strength is minimum 245. The elongation property of SM400B Steel varies with the ranges of thickness. The minimum percentage range for elongation is 18.

Equivalent steel grade ofSM400B










S235 J0



E 24-3

Fe 360 C

SS 13,12,00

Fe 410-S

A284 gr, D


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