s420m Steel

Gnee® Steel offers 4 grades of S420m-certified alloy steel plate. Available supply shapes such as plates, profiles, bars, coils and tubes.

S420M is a high-strength, low-alloy structural steel that falls under the EN 10025-4 standard. The “S” in S420M stands for structural steel, and the “M” indicates that it is thermomechanically rolled. S420M steel offers excellent mechanical properties and good toughness, suitable for various construction and engineering applications.

Plates – Most commonly used shape. Supplied in thicknesses ranging from 0.2mm to 200mm, widths up to 3.5m and lengths up to 18m. Used for building construction, pressure vessels,storage tanks,aumobile industry etc.
Coil – a finished steel product such as sheet or strip which has been wound or coiled after rolling. Mainly used for pipe-manufacturing, structural steel members, electronic components, automotive parts.
Tubes – There are two types of round steel pipes and square steel pipes. Widely used in construction, industrial applications, the medical industry, and to manufacture automobiles.
Bars – Also known as steel rods or steel round bars, are long, solid cylindrical bars made primarily of steel. They are used in agriculture, oil and gas, tool and die, defense, rail, and power generation industries.
Chequered plate – is a type of steel plate with a raised pattern of raised diamonds or lines on its surface. Due to Excellent anti-slip properties, it mainly used for industrial flooring, stair treads, ramps, and walkways.
Other shapes – S420M can also be customized into half-rounds, flat bars, beam sections etc. based on requirements.

  • s420m
  • s420n steel
  • s420ml
  • s420nl

Thickness: 0.2 MM – 200 MM

Width: 1220MM – 4200MM

Length: 5000-18000mm

Customize: Available

  • UT (Ultrasonic examination),
  • AR(As Hot Rolled only),
  • TMCP(Thermal Mechanical Control Processing),
  • N(Normalized),
  • Q+T(Quenched and Tempered),
  • Z Direction Test(Z15,Z25,Z35) ,
  • Charpy V-Notch Impact Test,
  • HIC test,
  • NDT ,
  • PWHT( Simulated Post Weld Heat Treatment)
  • NACE0175
  • The Third Party Test (Such as SGS Test), 
  • Coated or Shot Blasting and Painting.

Available, welcome to consult

A) Packaging Details: Standard export seaworthy packing or as required.
B) Delivery Time:30-50 days, 7 days for stock goods.
C) Loading Port:Shanghai ,Tianjin, Qingdao.
D) Offer Ability:5000MT/Per Month.
E) MOQ:1 Pcs.

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Chemical Composition Of Hot Sale s420m Steel

Nominal gauge, mmMinimum yield strength, ReH (MPa)Ultimate tensile strength, Rm (MPa)Minimum elongation ratio σ, %
≤16420 520-68019
> 16 ≤ 40400 520-68019
> 40 ≤ 63390 500-66019
> 63 ≤ 80380480-64019
> 80 ≤ 100370470-63019
> 100 ≤ 120365460-62019

Why Choose Gnee s420m Steel

If you want to find a trustable s420m Steel manufacturer, Gnee will be your best choice. 15 years of experience ABS steel manufacturer, certified by the classification society, CE, ISO, and SGS. And we guarantee the highest safety and quality standards. We fulfill all requirements of reputed classification societies.

In addition, our ABS steel has been successfully exported to more than 60 countries such as Germany, South Korea, the United States, Mexico, and Argentina. Many regular customers come to visit our company and factory and make multiple orders.

What Services Gnee Provide?

Gnee can provide the following measurement services for ABS Steel:

1. Dimensional measurement: Measure the dimensional parameters such as length, width and thickness by measuring instruments to ensure that the steel plate is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness and surface roughness of the steel plate surface to help ensure that the quality and surface state of the steel plate meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness of the steel plate to ensure that it meets the design requirements.
4. Material measurement: use material analysis instruments to measure the chemical composition and mechanical properties of the steel plate to ensure that the quality and performance of the steel plate meet the requirements.
5. Bending and Deformation Measurements: During shipbuilding, steel plates may undergo bending and deformation. The degree of bending and deformation of the steel plate is measured and monitored by using tools such as bending measuring instruments and displacement sensors to ensure that it is within the allowable range.

Ask Measurement service

Gnee can customize the size and shape of steel plates for your marine project according to your specific project needs. The custom design of the steel plate is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the steel plate design to meet the specific needs of your offshore engineering.

● According to the load calculation and strength requirements of structural design, adjust the thickness, width and length of shipbuilding steel plates
● The shape of the steel plate can be designed according to the characteristics of the marine environment. For example, in order to reduce the impact of waves on the structure, the shape of the steel plate can be spherical or flat.
● If you consider the convenience of installation and maintenance, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Purchasing Gnee ABS steel plate can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements of different ship engineering.

Cutting service: Shipbuilding steel plates can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut steel plates into required plates, blocks, special-shaped parts, etc.
Bending and forming: Shipbuilding steel plates are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding services: Shipbuilding steel plates can be subjected to various types of welding services, including manual arc welding, gas shielded welding, laser welding, etc.
Turning and machining of holes: Turning and machining of holes in shipbuilding steel plates by using machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface treatment: In order to improve the corrosion resistance and aesthetics of the steel plate, surface treatment can be carried out. This includes methods such as spraying, hot-dip galvanizing, electroplating, etc. to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee ABS steel plate can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that shipbuilding steel plates comply with relevant standards and regulations.

Material chemical composition analysis: Through chemical composition analysis, determine whether the composition of the shipbuilding steel plate meets the standard requirements.
Mechanical performance test: mechanical performance test includes tensile test, impact test, bending test, etc., which are used to determine whether the mechanical properties such as strength, toughness and ductility of shipbuilding steel plate meet the specified requirements.
Metallographic testing: Through metallographic testing, check the structure, grain size, non-metallic inclusions, etc. of shipbuilding steel plates to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of shipbuilding steel plates, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of shipbuilding steel plate, and its strength and wear resistance can be evaluated according to the hardness value.
Ultrasonic flaw detection: Ultrasonic flaw detection is used to detect internal defects of shipbuilding steel plates, such as cracks, pores, inclusions, etc.

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