Equivalent Material Grades in Other International Standards

Applications of S355JR Stainless Steels

Heavy lifting and excavation machinery cranes, dump trucks, excavators, trailers and bull dozers etc.

Railroad cards, railway wagons and forestry machines

Pipes, highway bridges, building structures

Power equipment, offshore structures, shipbuilding,

fan and pumps

Pressure vessels

What is S355JR? S355 grade is a non-alloy structural steel defined in EN 10025 standard. As the name implies it is extensively utilized in the structural engineering. It is an important material supply for construction industries. S355 grade gives robust yield and tensile strength and is offered with numerous treatments and test alternative to ascertain that it is an extremely applied steel in different projects.

“S” in the letters of S355JR material grade represents the steel as structural steel, letters in numerals i.e. “355” represents yield strength i.e. 355 N/mm² minimally, the “JR” addition ensures that the steel has been subjected to testing at 27 Joules with longitudinal Chary V-Notch impact testing at standard room temperature. Different designations of Charpy tests include J2, J0, and K2.

Dimensional Characteristics of S355JR Steels

The stated thickness for this S355JR material as retrieved by online statistics in the market starts from 3.0 mm to 400.0 mm. However the coil mill edge width of this material varies from 1250 mm to 1500 mm. Sheets can be cut into different length. As it is provided in various other forms as well, dimensions should be verified from suppliers before purchase.

The Indicative Chemical Composition of S355JR Steels

Maximum percentage of Carbon(C) is 0.27 percent.Maximum percentage of Manganese(Mn) is 1.7 percent.Maximum percentage of Phosphorous (P) is 0.045 percent.Maximum percentage of Sulphur(S) is 0.045 percent.Maximum percentage of Nitrogen(N) is 0.014Maximum percentage of Silicon(Si) is 0.60 percent.Maximum percentage of Copper (Cu) is 0.06 percent.

Remaining is iron (Fe) percentage and with few negligible impurities.

Mechanical Properties of S355JR Steels

The tensile strength of the S355JR non-alloy steel is expressed in Newton per millimeters and it must be at-least 450 N/mm2 (MPa).The elongation property of S355JR steel varies with the heat treatment process and thickness but it is indicated typically 17% – 20%.The minimum impact energy longitudinally is 27 Joules