What is SM490 material?

SM490 is a structural steel grade primarily used in building structures, bridges, and construction engineering projects. It is a Japanese Industrial Standard (JIS G3106) steel, known for its high strength, excellent toughness, and good weldability.

Key Features

High Strength

SM490 provides a minimum yield strength of 490 MPa, making it suitable for heavy-load applications.

Excellent Toughness

Performs well in low-temperature environments, ensuring durability and reliability in diverse conditions.

Weldability

The material's chemical composition supports easy and effective welding using standard techniques.

Versatility

It is available in various forms, like plates, sections, and bars, accommodating different structural needs.

Applications

SM490 material is widely used in:

Bridges: Supports high-load capacities in critical infrastructure.

Buildings: Structural frames for high-rise constructions.

Industrial Equipment: Suitable for machinery and heavy-duty equipment.

Shipbuilding: Used in some marine structures due to its strength and toughness.

Types of SM490 Steel

SM490A

Description: General-purpose structural steel.

Applications: Widely used in buildings, bridges, and general structural frameworks.

Key Features: high strength, good weldability, and excellent formability.

SM490B

Description: Enhanced strength and toughness compared to SM490A.

Applications: Suitable for load-bearing structures and bridges requiring additional durability.

Key Features: Improved toughness for applications under dynamic or cyclic loading.

SM490C

Description: Higher toughness and low-temperature impact resistance.

Applications: Designed for structures exposed to cold climates or requiring higher impact toughness.

Key Features: Superior performance in low-temperature environments.

SM490YA

Description: Higher yield strength variation of SM490.

Applications: Heavy-load structures like cranes, high-rise buildings, and industrial equipment.

Key Features: Yield strength of 365 MPa, exceeding the basic SM490 grades.

SM490YB

Description: Enhanced version of SM490YA with even higher yield strength.

Applications: For applications demanding extremely high yield strength and reliability.

Key Features: Yield strength of 440 MPa, making it suitable for very demanding engineering tasks.

Comparison Table

Each type is optimized for specific conditions. If you are selecting SM490 steel for a project, consider the application environment, required strength, and toughness. Let me know if you need detailed advice or a material comparison!

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