Structural Steel 420 - Chemical Composition, Mechanical Properties and Common Applications

US Equivalent Grades

EU	US
S420MC	60XLF

Chemical Composition of Structural Steel 420

The chemical composition of structural steel is very important and highly regulated. It is an essential factor which defines the mechanical properties of the steel material. In the following table, the chemical composition of S420MC is displayed.

Element	Content (%)
Manganese, Mn	1.60max
Silicon, Si	0.50max
Carbon, C	.12max
Phosphorus, P	0.025max
Sulfur, S	0.015max

Mechanical Properties of Structural Steel 420

The mechanical properties of structural steel are also very important to its classification, and subsequently its application. Structural steel 420 has good tensile and yield strength and they are tabulated below

Property	Definition	Value
Tensile strength	The point at which permanent deformation occurs when the material is pulled or stretched laterally along its length.	480-620 MPa (at nominal thickness between 3 and 16mm)
Yield strength	The yield strength of structural steel measures the minimum force required to create a permanent deformation in the steel.	60.915 ksi (420 N/mm2) [at nominal thickness 16mm]