Knowledge

• 20/Oct2025

  What are the main composition and properties of SMA570W steel?

  SMA570W is a Japanese standard (JIS G 3114) low-alloy high-strength weathering steel, with its composition optimized for corrosion resistance and mechanical performance, and properties tailored for st

• 20/Oct2025

  What special precautions need to be taken when welding SMA570W?

  Key precautions for welding SMA570W include strict surface cleaning, using weathering-matching consumables, controlling preheat/interpass temperature and heat input, performing stress relief annealing

• 17/Oct2025

  What Is Weathering Steel (Corten A, Corten B, A588, S355J2W)?

  Learn what weathering steel (Corten A, A588, S355J2W) is, how it resists atmospheric corrosion, and why it’s ideal for bridges and architectural structures. Discover its working principle, advantages,

• 17/Oct2025

  Which one has better weldability, S355J0W or S355J2W?

  S355J2W has slightly better weldability than S355J0W, though the gap is small—both are fully weldable for structural applications. The difference mainly comes from their inherent material design goals

• 17/Oct2025

  What is the difference in corrosion resistance between S355J0W and S355J2W?

  The corrosion resistance of S355J0W and S355J2W is essentially equivalent. Both belong to European standard weathering structural steels, which improve atmospheric corrosion resistance by adding alloy

• 17/Oct2025

  How does the weathering performance of ASTM A588 Grade K compare to other wea...

  ASTM A588 Grade K exhibits excellent and balanced weathering performance among common weathering steels, with its corrosion resistance tailored for general atmospheric environments, while differing sl

• 17/Oct2025

  Is ASTM A588 Grade K suitable for bridge construction?

  ASTM A588 Grade K is highly suitable for bridge construction, especially for components exposed to outdoor or harsh environments, due to its inherent weathering performance, mechanical strength, and c

• 17/Oct2025

  What are the advantages of galvanizing SPA-H weathering steel?

  Galvanizing SPA-H weathering steel primarily offers three core advantages: enhanced corrosion resistance in harsh environments, extended overall service life, and reliable protection for the steel mat

• 17/Oct2025

  How does the galvanized layer affect the performance of SPA-H weathering steel?

  The galvanized layer primarily modifies the corrosion resistance, appearance, and service environment adaptability of SPA-H weathering steel, while also bringing certain trade-offs.

• 17/Oct2025

  Can SPA-H weathering steel be galvanized?

  SPA-H weathering steel can undergo galvanization, but the feasibility, process characteristics, and application scenarios of its galvanization need to be comprehensively considered based on material p