S355M thermomechanically rolled grain weathering structural steel plate

Product Details:
Place of Origin: China
Brand Name: VANFORGE
Certification: ISO9001:2015, ABS, BV, CCS, DNV GL, NKK
Payment & Shipping Terms:
Minimum Order Quantity: 5 metric tons
Price: Negotiable
Packaging Details: In bundles, standard seaworthy packing for export
Delivery Time: 15 days
Payment Terms: L/C, T/T
Supply Ability: 3000 metric tons per month

Detail Information

Material: Fine Grain Steel Process: Hot Rolled
Shape: Flat Plate Surface Treatment: Plain And Smooth
Length: Up To 12000mm Condition: Stress Relieved
Application: Structure Feature: Atmospheric Corrosion Resistant
High Light:

structural steel sheet


hardened steel plate

Product Description

S355M STRUCTURAL STEEL is a thermomechanically rolled, fine grained structural steel with minimum yield strength of 355 MPa in its delivery condition ex works (referring to the lowest thickness range). It fulfils the requirements of EN 10025-4.
Due to its chemical composition, this material has a low carbon equivalent and hence excellent weldability. The steel is preferentially used by the customers in constructional steelwork, hydraulic steelwork and mechanical engineering, where exacting demands are placed on weldability.
Product description
Designation and range of application
S355M STRUCTURAL STEEL can be delivered as follows:
· Basic quality with minimum impact values at –20 °C: S355M STRUCTURAL STEEL B
Material No. 1.8823 - S355M in accordance with EN 10025-4.
S355M STRUCTURAL STEEL can be delivered in thickness from 8 to 150 mm (EN 10025-4 defines the properties only up to a thickness of 120 mm).
For S355M STRUCTURAL STEEL, under the designations S355M STRUCTURAL STEEL.
Chemical composition
For the ladle analysis the following limiting values are applicable in %:


Delivery condition
Thermomechanically rolled.
Mechanical properties in the delivery condition
Tensile test at ambient temperature – transverse test specimens

Plate thickness

t [mm]

Minimum yield strength

ReH [MPa]

Tensile strength

Rm [MPa]

Minimum elongation

A5 [%]

t ≤ 16355

470 - 630


16 < t ≤ 40345
40 < t ≤ 63335450 - 610
63 < t ≤ 100325440 - 600
100 < t ≤ 120320430 - 590
120 < t ≤ 150320430 - 590

Optionally it is possible to order S355M STRUCTURAL STEEL in the whole thickness range (up to 150 mm) with a minimum yield strength of 355 MPa, as well as a tensile strength range of 470 MPa.
Impact test on Charpy-V-specimens

MaterialSpecimen directionImpact energy KV2 [J] at test temperature of
0 °C-10 °C-20 °C-30 °C-40 °C-50 °C

The specified minimum value is the average of 3 tests. One individual value may be below the minimum average value specified, provided that it is not less than 70 % of that value. Undersize specimens are admitted for plate thickness ≤ 12 mm, the minimum specimen width is 5 mm. The minimum impact energy will be decreased proportionally.
1) Yield strength of 355 MPa, as well as a tensile strength range of 470 MPa independent of plate
2) The impact properties and the tensile properties shall be verified for each mother plate.
Tensile test and impact tests are carried out once per heat, 40 t and thickness range as specified for the yield strength according to table 5 of EN 10025-4. Tests on every mother plate are possible on request (see option 2). The test pieces are taken and prepared according to parts 1 and 4 of EN 10025.
Identification of plates
Unless otherwise agreed, the marking is carried out via steel stamps with at least the following information:
· steel grade (S355M)
· heat number
· number of mother plate and individual plate
· the manufacturer’s symbol
· inspection representative’s sign
The entire processing and application techniques are of fundamental importance to the reliability of the parts and assemblies made from this steel. The user should ensure that his design, construction and processing methods are aligned with the material, correspond to the state-of-the-art that the fabricator has to comply with and are suitable for the intended use. The customer is responsible for the selection of the material. The recommendations in accordance with EN 1011.
Cold forming
With regard to its high toughness, S355M STRUCTURAL STEEL can generally be well cold formed, i.e. at temperatures below 580 °C. Cold forming is always related to a hardening of the steel and to a decrease in ductility. This change in the mechanical properties can in general be partially recovered through a subsequent stress relief heat treatment.
Flame cut or sheared edges in the bending area should be ground before cold forming. For larger cold forming degrees we recommend consulting us before ordering.
Hot forming
Hot forming, i.e. forming at temperatures above 580 °C, leads to changes in the original material condition. It is impossible to re-establish the same material properties that had been achieved during the original manufacture through a further heat treatment. Therefore hot forming is not permitted.
Flame cutting and welding
S355M STRUCTURAL STEEL can be flame cut in all thickness ranges without preheating due to its low hardenability. Plasma and laser cutting can also be carried out without preheating for typical thickness.
S355M STRUCTURAL STEEL has an excellent weldability if the general technical rules are observed (EN 1011 has to be applied analogously). The risk of cold cracking is low, so that preheating is often not necessary when welding. With greater plate thicknesses, omitting the preheating requires the use of filler materials and welding conditions that lead to a very low hydrogen transfer (up to 5 ml/100 g DM according to ISO 6390).
The low content of carbon and other alloy elements leads to favourable toughness properties in the heat affected zone, even with high heat inputs. Depending on the chosen welding process, welding filler material as well as toughness requirements in the heat affected zone, it permits cooling temperatures above the limiting values of 25 s as stated in EN 1011-2 and SEW 088.
Heat treatment
Welded joints of S355M STRUCTURAL STEEL are usually used in welded condition. If a stress relief heat treatment is necessary, it is carried out in the temperature range between 530 and 580 °C with cooling in air. The holding time should not exceed 4 hours (even if multiple operations are carried out). For particular heat treatment requirements we recommend consulting us before ordering.
General technical delivery requirements
Unless otherwise agreed, the general technical delivery requirements in accordance with EN 10021 apply.
Unless otherwise agreed, tolerances are in accordance with 10029, with class A for the thickness.
Surface quality
Unless otherwise agreed, the specifications will be in accordance with EN 10163, class A2.
Ultrasonic testing
Unless otherwise agreed, S355M STRUCTURAL STEEL meets the requirements of class S1E1 in accordance with EN 10160.
General note
If special requirements, which are not covered in this material data sheet, are to be met by the steel due to its intended use or processing, these requirements are to be agreed before placing the order.
Production process
S355M thermomechanically rolled grain weathering structural steel plate 0
S355M thermomechanically rolled grain weathering structural steel plate 1

Get in touch with us

Enter Your Message

You Might Be Into These