SMA490BP Higher Strength Japan Premium Weathering

Main Products

The JIS G3114 standard specifies SMA490BP hot rolled atmospheric corrosion resisting steels for use in bridges, architecture, welded structures, air preheaters, economizers, railway carriages, container production, bridge building, and construction. SMA490BP is a higher strength premium weathering steel from Japan that is specially designed to withstand harsh weather conditions. This durable and corrosion-resistant steel is ideal for outdoor structures and applications exposed to the elements. Gnee offers plates, strips, sections, and steel flats in SMA490BP.

JIS G3114 SMA490BP Steel Plates Available Sizes

Thickness: 1.2-150mm
Width: 1220-4200mm
Length: 5000-18000mm
Note: SMA400AW coil thickness should be less than or equal to 25mm

JIS G3114 SMA490BP Steel Chemical Composition

SMA490BP (%, by weight)≤0.18≤0.55≤1.40≤0.035≤0.0350.20-0.350.30-0.55

JIS G3114 SMA490BP Steel Mechanical Properties

GradeYield strength MPaTensile strength MPaElongation

With over 24 years of experience working with JIS G3114 SMA490BP steel plates, Gnee Steel is a reliable supplier of JIS SMA490BP steel products. Our commitment to quality ensures that we always prioritize customer satisfaction. Contact us for more information on JIS G3114 products.

Advantages of SMA490BP Higher Strength Japan Premium Weathering

  • High strength: SMA490BP offers superior strength compared to traditional steel products, making it suitable for demanding applications.
  • Weather resistance: This premium weathering steel is designed to withstand extreme weather conditions, including rain, snow, and UV exposure.
  • Corrosion resistance: SMA490BP has excellent corrosion resistance, making it a long-lasting and cost-effective solution for outdoor structures.
  • Low maintenance: Due to its weathering properties, SMA490BP requires minimal maintenance, saving time and money in the long run.

Application Fields of SMA490BP Higher Strength Japan Premium Weathering

  • Architectural structures: SMA490BP is commonly used in the construction of bridges, buildings, and other architectural structures that require high strength and weather resistance.
  • Outdoor furniture: This premium weathering steel is also used in the manufacturing of outdoor furniture, such as benches, tables, and sculptures, due to its durability and aesthetic appeal.
  • Marine applications: SMA490BP is suitable for marine applications, such as shipbuilding and offshore platforms, where corrosion resistance is essential.


In conclusion, SMA490BP Higher Strength Japan Premium Weathering is a top-quality steel product that offers exceptional strength, weather resistance, and corrosion resistance. With its wide range of applications and proven performance, this premium weathering steel is a reliable and cost-effective solution for outdoor structures that require durability and longevity.

Frequently Asked Questions

1. What are the key features of SMA490BP Higher Strength Japan Premium Weathering?

SMA490BP Higher Strength Japan Premium Weathering offers high strength, weather resistance, corrosion resistance, and low maintenance requirements.

2. Where can SMA490BP Higher Strength Japan Premium Weathering be used?

This premium weathering steel is commonly used in architectural structures, outdoor furniture, marine applications, and other outdoor projects that require durability and weather resistance.

Why Choose Gnee Steel

If you want to find a trustable steel products manufacturer, Gnee will be your best choice. 15 years of experience steel products 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 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.

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What Services Does Gnee Provide?
  • Dimensional Inspection: Length, width, diameter; Thickness, straightness; Flatness, profile;
  • Surface Inspection: Visual inspection; Roughness testing; Coating thickness measurement;
  • Composition Testing: Interstitial elemental analysis - C,S,P, Si; Alloy grading verification; Inclusion rating;
  • Mechanical Testing: Tensile strength, yield strength; Toughness, ductility; Hardness testing;
  • Flaw Detection: Ultrasonic, radiographic testing; Magnetic particle, dye penetrant testing;
  • Documentation: Inspection reports; Test certificates; Material traceability
  • CNC machining - turning, milling, drilling
  • Surface treatments like polishing
  • Heat treatments - quenching, annealing
  • Wet/powder coating
  • Waterjet cutting
  • Laser cutting
  • Plasma cutting
  • Shearing/punching
Molding and Manufacturing1
  • Rolling
  • Press braking
  • Plate bending - concave & convex
  • Profile bending -custom fabrication as per drawings
  • Chemical analysis
  • Mechanical testing
  • Non-destructive examination
  • Ultrasonic, radiography testing

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