CorTen-B Weathering Steel Plate is a specialized low-alloy steel designed for superior atmospheric corrosion resistance, positioned between ordinary carbon steel and stainless steel. Here's a detailed technical and comparative overview, incorporating your specifications:

1. CorTen-B Steel: Key Properties & Composition

Core Characteristics

 

Mechanical Performance:

Strength comparable to low-alloy high-strength structural steels (e.g., yield strength ≥345 MPa).

Moderate ductility and toughness, suitable for load-bearing structures, but slightly higher brittleness than pure carbon steels due to alloy content.

Aesthetic & Maintenance:

Develops a stable, reddish-brown patina over 1–3 years, offering an industrial, weathered aesthetic.

Low maintenance: Once the patina stabilizes, no painting or coating is required, reducing lifecycle costs by 30–50% compared to painted steel.

 

 

 

 

 

Chemical Composition (Typical)

Element	CorTen-B (ASTM A588)	09CuPCrNi-A (China)	SPA-H (Japan)
C	≤0.19%	≤0.12%	≤0.12%
Cu	0.25–0.40%	0.25–0.55%	0.25–0.55%
Cr	0.40–0.65%	0.30–1.25%	0.30–1.25%
Ni	≤0.65%	≤0.65%	≤0.65%
P	0.07–0.15%	0.07–0.15%	0.07–0.15%
S	≤0.05%	≤0.03%	≤0.03%

 

Critical Requirements:

Strict control of sulfur (S) and gas content (e.g., H2, O2) to minimize crack sensitivity during welding and forming.

High-purity steelmaking processes (e.g., vacuum degassing) are essential to meet cleanliness standards.

 

 

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our Corten A/B Steel Plate Weathering Steel, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

 

 

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