STEEL GRADES & MATERIAL STANDARDS
Steel Grades and Standards for Industrial Steel Products
Explore steel grades by standard, material type, product form and industry application. Megato Group supplies carbon steel, alloy steel, pressure vessel steel and other industrial steel products according to ASTM, ASME, EN, DIN, JIS, GB/T and API standards.
ASTM / ASME · EN / DIN · JIS · GB/T · API
Find the Right Steel Grade for Your Project
A steel grade identifies the material standard, chemical composition, mechanical properties and typical application of a steel product. Selecting the correct grade helps ensure the required strength, toughness, weldability, corrosion resistance and service performance for your project.
Use the categories below to compare steel grades by international standard, material type and industry. If you are not sure which grade is suitable, send us your required product, dimensions, standard and application. Our team can recommend suitable material options and provide a quotation.
International Standards
Compare ASTM, ASME, EN, DIN, JIS, GB/T and API steel grades for international purchasing and engineering projects.
Technical Information
Review chemical composition, mechanical properties, equivalent grades, delivery conditions and inspection documents.
Project Support
Get assistance with grade selection, product availability, cutting, testing, certification and export documentation.
Steel Grade Finder
Browse steel grades according to the standard, material category or industrial application that matches your project requirements.
By International Standard
By Material Type
By Industry Application
Steel Grades by International Standard
Different countries and industries use different steel grade systems. The correct comparison should always consider the complete material standard, product form, thickness range, delivery condition, test requirements and project specification.
ASTM and ASME Steel Grades
ASTM and ASME grades are widely used for steel plates, pressure vessels, boilers, structural components, piping and industrial equipment. Common references include ASTM A36, ASTM A572, ASTM A516, ASTM A106 and API-related specifications.
EN and DIN Steel Grades
EN and DIN steel grades are frequently used in European engineering, construction, pressure equipment and machinery manufacturing. Typical grades include S235JR, S355JR, S355J2, P265GH and P355GH.
JIS Steel Grades
JIS steel grades are commonly specified for Japanese-standard industrial equipment, machinery, construction and fabrication projects. The exact grade should be confirmed according to the applicable JIS product standard.
GB/T Steel Grades
GB/T steel grades are Chinese national standard designations used for structural steel, pressure vessel steel, boiler steel, pipeline steel and other industrial products.
API Steel Grades
API steel grades are used for oil and gas pipelines, line pipe and energy infrastructure. Grade selection depends on the API specification, product form, strength level, sour service requirements and project conditions.
Grade Equivalents
Equivalent grade tables are useful for preliminary comparison, but grades from different standards should not be treated as automatically interchangeable without technical verification.
Steel Grades by Material Type
Carbon Steel Grades
Carbon steel grades are used for general fabrication, structural components, machinery, buildings, bridges and industrial equipment. The required grade depends on strength, weldability, thickness and service environment.
Alloy Steel Grades
Alloy steel grades contain controlled alloying elements that improve strength, toughness, hardenability, heat resistance or wear resistance for demanding industrial applications.
Pressure Vessel and Boiler Steel Grades
Pressure vessel steel grades are developed for boilers, storage tanks, reactors, heat exchangers and other equipment operating under pressure or elevated temperature.
HSLA and Structural Steel Grades
HSLA and structural steel grades combine improved strength with practical weldability and formability. They are widely used in construction, bridges, heavy machinery and infrastructure.
Pipeline Steel Grades
Pipeline steel grades are selected according to line pipe standards, strength requirements, toughness, weldability, wall thickness and the transported medium.
Special Steel Grades
Special steel grades may be selected for high temperature, low temperature, corrosion, wear, marine or other demanding service conditions. Contact us with your project specification.
Common Steel Grade Comparison Chart
The following steel grade list provides a general reference for commonly requested industrial materials. Always confirm the current standard edition, product form, thickness and project requirements before placing an order.
| Steel Grade | Typical Standard | Material Type | Common Applications |
|---|---|---|---|
| A36 | ASTM A36 | Structural carbon steel | Construction, fabrication, machinery and general structures |
| A572 Grade 50 | ASTM A572 | HSLA structural steel | Bridges, buildings, heavy equipment and infrastructure |
| A516 Grade 60 / 65 / 70 | ASTM A516 | Pressure vessel steel | Boilers, storage tanks, reactors and pressure equipment |
| S235JR | EN 10025 | Structural steel | General construction and structural fabrication |
| S355JR / S355J2 | EN 10025 | High-strength structural steel | Heavy structures, bridges, machinery and infrastructure |
| P265GH / P355GH | EN 10028 | Pressure vessel and boiler steel | Pressure equipment, boilers and heat-related applications |
| API 5L X52 / X65 | API 5L | Pipeline steel | Oil, gas, water and energy transportation pipelines |
Technical note: Similar grade designations do not always mean identical chemical composition, mechanical properties or certification requirements. Our technical team can verify the correct grade against your drawing, purchase specification or project standard.
What Information Is Included for Each Steel Grade?
Chemical Composition
Grade information may include carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum and other controlled elements according to the applicable standard.
Mechanical Properties
Typical data includes yield strength, tensile strength, elongation, impact toughness, hardness and test temperature. Values may vary by thickness and delivery condition.
Equivalent Grades
Equivalent or comparable grades can help with preliminary material selection. Final substitution should be approved by the responsible engineer or project authority.
Supply and Documents
Depending on the project, we can discuss dimensions, cutting, heat treatment, ultrasonic testing, mill test certificates, EN 10204 3.1 documents and third-party inspection.
How to Select the Correct Steel Grade
Choosing a steel grade should be based on the complete service and purchasing requirement rather than on the grade name alone.
- Define the application. Confirm whether the material will be used for structural fabrication, pressure equipment, pipelines, boilers, machinery or another application.
- Confirm the required standard. Identify whether the project uses ASTM, ASME, EN, DIN, JIS, GB/T, API or another specification.
- Check thickness and product form. Grade requirements can change according to plate thickness, pipe wall thickness, coil form or finished product dimensions.
- Review mechanical properties. Check yield strength, tensile strength, elongation, impact toughness and temperature requirements.
- Review chemical composition and weldability. Chemical limits can affect forming, welding, heat treatment and service performance.
- Confirm inspection and documentation. Specify MTC requirements, EN 10204 certification, ultrasonic testing, third-party inspection and other documents before ordering.
- Request technical confirmation. Send your material specification, drawing or purchase order requirement to our team for review.
Steel Grades by Industry
Oil and Gas
Oil and gas projects require carefully selected grades for pipelines, storage tanks, processing equipment and structural components. Strength, toughness, weldability and corrosion conditions should be reviewed together.
Pressure Equipment
Pressure vessel and boiler steel grades are used for reactors, boilers, heat exchangers, storage tanks and other equipment operating under pressure or elevated temperature.
Power Generation
Power plants use structural steel, boiler steel, pressure vessel steel and alloy steel for equipment, supports, tanks, pipelines and high-temperature service.
Construction and Infrastructure
Structural and HSLA steel grades are used for buildings, bridges, platforms, towers, heavy equipment and infrastructure projects.
Shipbuilding and Marine
Marine steel selection depends on the applicable shipbuilding standard, strength level, impact toughness, welding procedure and classification requirements.
Machinery and Fabrication
Machinery manufacturers and fabricators select steel grades according to load, wear, forming, welding, machining and operating conditions.
Available Steel Product Forms
The same steel grade may be supplied in different product forms. Availability depends on the grade, standard, dimensions, production route and project requirements.
- Steel Plate for structural, pressure vessel, boiler and industrial applications
- Steel Coil and Sheet for fabrication, processing and manufacturing
- Steel Pipe and Line Pipe for pipelines, energy and industrial systems
- Pressure Vessel Steel Plate for boilers, tanks and pressure equipment
- Cut-to-size steel products according to drawings, dimensions and project requirements
Steel Grade Datasheets, Testing and Certification
For an accurate quotation and technical review, please provide the required steel grade, standard, product form, dimensions, quantity, delivery condition, destination and inspection requirements.
Depending on the material and project specification, available technical documents may include:
- Mill Test Certificate and material test report
- Chemical composition report
- Mechanical property test results
- EN 10204 3.1 certification
- Ultrasonic testing report
- Heat treatment and delivery condition records
- Third-party inspection documentation
- Certificate of origin and export documents
Document requirements should be confirmed before production or shipment so that the supplied material matches the project specification.
Frequently Asked Questions About Steel Grades
Need Help Selecting a Steel Grade?
Share your project specification with Megato Group. We can help you review the applicable standard, compare suitable steel grades, confirm product availability and prepare an export quotation.